2015 GMC Sierra 3500HD

What owners should know

Covers 2015–2019 · 6.6L Duramax diesel (LML 2015–2016, L5P 2017–2019) and 6.0L V8 gas · Updated 2026-10-01

Researched from owner forums and NHTSA complaints and written by Know Your Truck. These are patterns in what owners report, not a guarantee about any particular truck.

Common failures & how to fix them

Parts and video buttons search for your 2015 GMC Sierra 3500HD. Always confirm a part fits using your VIN. Brakes, steering, fuel and airbag work affects your safety, so if you're not sure, have a qualified mechanic do it.

• 2015–2016 Duramax fuel pump (CP4) failure

  Best left to a shop

  Signs: Sudden stalling or no-start, low fuel pressure codes such as P0087.

  Fix: Prevention: change the fuel filter on schedule and buy fuel from busy stations. Some owners replace the CP4 with a different pump design as prevention. A failed pump usually means a full fuel system replacement at a diesel shop.

  Shop: Duramax fuel filterShop: Duramax CP3 conversion kit▶ How-to videos

• Loose brake pedal (2015–2016)

  Dealer (recall)

  Signs: The brake pedal feels loose or doesn't work right.

  Fix: Covered by GM recalls for the brake pedal pivot nut.

  May be covered free by recall 16V069000 / 18V578000. Check the VIN at nhtsa.gov/recalls.

• Block heater cord fire risk (2017–2019 diesels)

  Dealer (recall)

  Signs: A burnt or melted block heater cord or plug.

  Fix: Covered by GM recalls. Don't use the block heater until it's checked.

  May be covered free by recall 19V328000 / 21V496000. Check the VIN at nhtsa.gov/recalls.

• 'Service trailer brake system' warning

  Easy DIY

  Signs: Trailer brake warnings that cut the trailer brakes while towing.

  Fix: Start with the simple things: clean and inspect the 7-pin trailer connector and the trailer's wiring. If it continues, have a dealer check the trailer brake module.

  Shop: 7 pin trailer connector▶ How-to videos

• L5P cracked intercooler pipe

  Easy DIY

  Signs: A loud pop, then low power and limp mode.

  Fix: Replace the plastic charge pipe. Many owners upgrade to a metal pipe.

  Shop: L5P Duramax intercooler pipe▶ How-to videos

Recalls

A recall doesn't mean a truck still has the problem. Enter the truck's VIN at nhtsa.gov/recalls or ask a dealer to see whether the repair was done.

• Air Bags:Side/Window:Curtain:Inflator

  Jul 2021 · #21V504000

  General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500, 2500, 3500, and Chevrolet Silverado 1500, 2500, and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator, or the inflator sidewall may rupture.

  Risk and fix

  Risk: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.

  Fix: Dealers will replace the left and right side RRAB modules, free of charge. Interim owner notification letters informing owners of the safety risk were mailed on August 18, 2021. Owners will receive a second notice when the remedy is available. Phase I owner notification letters were mailed on May 5, 2022. Phase II owner notification letters are expected to be mailed on May 31, 2022. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. This recall supersedes NHTSA recall number 20V-736. GM's number for this recall is N202324251.

• Air Bags:Side/Window:Curtain:Inflator

  Nov 2020 · #20V736000

  General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500 and Chevrolet Silverado 1500 and 2015 GMC Sierra 2500 and 3500, and Chevrolet Silverado 2500 and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator.

  Risk and fix

  Risk: If the end cap separates from the inflator, the compressed gas will escape and the end cap can be propelled into the vehicle, increasing the risk of injury or a crash.

  Fix: GM will notify owners, and dealers will replace the RRAB modules on the left and/or right side, free of charge. Interim owner notification letters were mailed on December 22, 2020. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. Note: GM filed a new recall, number 21V-504 that supersedes this recall. All vehicles previously recalled under 20V-736 will now be repaired under the new recall number 21V-504. GM's numbers for this recall are N202309680, N202309681, and N202309682.

• Service Brakes, Hydraulic:Pedals And Linkages

  Aug 2018 · #18V578000

  General Motors LLC (GM) is recalling certain 2015-2016 Chevrolet Silverado 2500, 3500, 1500 Crew Cab Special Service, Tahoe Police Pursuit/Special Service, GMC Sierra 2500, and 3500 vehicles. The brake pedal pivot nut may loosen, causing the brake pedal to be loose or inoperative.

  Risk and fix

  Risk: If the brake pedal becomes loose or inoperative, the driver may be unable to stop the vehicle by using the brake pedal. Additionally, a loose pedal may also interfere with the accelerator pedal. Either condition may increase the risk of a crash.

  Fix: GM will notify owners, and dealers will add adhesive to the nut and reinstall the nut with increased tightness, free of charge. The recall began October 3, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18278. Note: The vehicles in this recall need this additional remedy despite being covered by recall 16V069 for brake pedal loosening.

• Fuel System, Gasoline:Storage:Auxillary Tank

  Oct 2017 · #17V664000

  General Motors LLC (GM) is recalling certain 2011-2015 Chevrolet Silverado 3500 and GMC Sierra 3500 trucks equipped with dual fuel tanks. The low fuel level sensor for the front tank may stick causing the rear tank to overfill the front tank.

  Risk and fix

  Risk: If the front tank overfills, the excess pressure may cause the front tank to expand and contact the driveshaft, possibly resulting in a hole in the tank. The hole will leak fuel, which in the presence of an ignition source, can increase the risk of a fire.

  Fix: GM has notified owners, and dealers will replace the rear tank fuel pump or update the fuel-level sensor software, as well as inspect the front tank, replacing it as necessary, free of charge. The recall began December 11, 2017. Owners may contact GM customer service for Chevrolet 1-800-222-1020 or for GMC customer service at 1-800-462-8782. GM's number for this recall is 17399.

• Air Bags:Frontal

  Jul 2017 · #17V437000

  General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

  Risk and fix

  Risk: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.

  Fix: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.

• Air Bags:Frontal

  Sep 2016 · #16V651000

  General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

  Risk and fix

  Risk: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.

  Fix: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.

• Service Brakes, Hydraulic:Pedals And Linkages

  Feb 2016 · #16V069000

  General Motors LLC (GM) is recalling certain model year 2015-2016 Chevrolet Silverado 1500, 2500, and 3500 heavy duty trucks manufactured October 1, 2013, to February 1, 2016, 2015-2016 Chevrolet Tahoe Police Pursuit Vehicles (PPV) manufactured March 1, 2014, to February 1, 2016, and 2015-2016 GMC Sierra 2500 and 3500 heavy duty trucks manufactured October 29, 2013, to February 1, 2016. On the affected vehicles, the brake pedal pivot nut may loosen, causing the brake pedal to be loose or inoperative.

  Risk and fix

  Risk: If the brake pedal becomes loose or inoperative, the driver may be unable to stop the vehicle by using the brake pedal. Additionally, a loose pedal may also interfere with the accelerator pedal. Either condition may increase the risk of a crash.

  Fix: GM will notify owners, and dealers will add adhesive to the brake pedal pivot nut and reinstall with an increased torque, free of charge. The recall began on March 14, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 20760.

Owner complaints by area

Reports owners filed with NHTSA. They aren't verified, and one complaint can mention more than one area. Tap an area to read the most recent ones.

• Exterior Lighting37

  • Filed Jan 2018

    HEADLIGHTS NOT BRIGHT ENOUGH TO SEE IN THE NIGHT

  • Filed Nov 2017

    HEADLIGHTS ON THIS TRUCK HAVE ALWAYS BEEN WEAK, DISTANCE IS NOT LIT UP AND IN RAINY WEATHER ON THE HIGHWAY IS VERY POOR EVEN WITH FOG LIGHTS ON. THE HELP FROM THE FOG LIGHTS IS MINIMAL. THIS IS A KNOWN PROBLEM BY THE MANUFACTURER AND IS REPEATED MANY MANY TIMES ON VARIOUS GM RELATED OWNER FORUMS. THIS IS A SAFETY ISSUE AND NEEDS TO BE ADDRESSED AND CORRECTED BY THE MANUFACTURER.

  • Filed Mar 2017

    LIGHTING IS VERY POOR, HARD TO SEE AT NIGHT. IT'S NOT SAFE TO DRIVE IT AT NIGHT. WHEN IT'S RAINING IF HEADLIGHTS ON ITS FOGGING UP FROM INSIDE.

  • Filed Jan 2017

    I AM AFRAID TO DRIVE AT NIGHT BECAUSE THE HEAD LIGHTS ARE TERRIBLE. I COULDN'T SEE THE TIRE CARCASS LEFT ON THE HIGHWAY EARLY ENOUGH TO SWERVE AROUND IT. I HIT IT WITH THE REAR WHEEL AND DID APPROX. 6000.00 DOLLARS DAMAGE TO THE VEHICLE.

  • Filed Dec 2016

    HEADLIGHTS DO NOT PROVIDE SUFFICIENT ILLUMINATION TO SEE THE ROAD. VERY DANGEROUS TO DRIVE AT NIGHT.

  • Showing the 5 most recent of 37.
• Steering10

  • Filed Mar 2024

    The contact owns a 2015 GMC Sierra. The contact stated that while driving at an undisclosed speed, he became aware that the electronic power steering was not functioning properly, requiring increased effort to maneuver the vehicle. The vehicle returned to normal functionality, but the failure became a regular occurrence. The power steering warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 18V586000 (Steering), but the VIN was not included. The manufacturer was notified of the failure but did not assist. The failure mileage was 90,000.

  • Filed Aug 2023

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving approximately 35 MPH, the message "Power Steering Assist" was displayed, and the steering wheel became very difficult to turn in either direction. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 14V719000 (Steering). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 131,890.

  • Filed May 2020

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 3500. THE CONTACT STATED HER HUSBAND WAS DRIVING AT 20-30 MPH AND HAULING A TRAILER, THE DRIVER ENTERED THE HIGHWAY, MADE A RIGHT TURN AND THE VEHICLE LOSS OF POWER STEERING ASSIST AND BECAME DIFFICULT TO STEER. THE VEHICLE WAS TOWED TO CAVENDER BUICK GMC WEST (7400 TX-1604 LOOP, SAN ANTONIO, TX 78254) TO BE DIAGNOSED. THE DRIVER WAS INFORMED THAT THE POWER STEERING NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT REFERENCED THE FAILURE TO (NHTSA CAMPAIGN NUMBER: 14V719000 (STEERING) HOWEVER THE VIN WAS NOT INCLUDED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 33,000.

  • Filed May 2019

    I WAS TRAVELING ON A BUSY ROADWAY AT 40 MPH WHEN FUEL FILTER WARNING LIGHT CAME ON SUDDENLY AND VEHICLE LOST ALL POWER - INCLUDING THE LOSS OF POWER STEERING AND POWER BRAKING. THANKFULLY I HAD NOT YET ENTERED THE HIGHWAY AND WAS ABLE TO SLOW VEHICLE DOWN BUT WITH GREAT DIFFICULTY AND NOT INJURE ANYONE AROUND AND THAT DAY WAS NOT TOWING A LOAD. VEHICLE WOULD NOT RESTART. I HAD IT TOWED TO NEAREST DEALERSHIP WHO THEN INFORMED ME THAT THE "BOSCH CP4 FUEL PUMP" HAD EXPLODED SENDING METAL SHRAPNEL THROUGHOUT THE ENTIRE ENGINES FUEL SYSTEM. THE ONLY FIX WAS THE ENTIRE REPLACEMENT OF THE FUEL SYSTEM AT A COST OF OVER $11K. I HAD JUST PURCHASED THE TRUCK 3 MONTHS PRIOR. UPON HEARING THIS, I SEE THIS HAS BEEN A FREQUENT SAFETY PROBLEM AFFECTING A WHOLE LINE OF 2011 - CURRENT GM, FORD, DODGE, AND JEEP DIESEL VEHICLES EQUIPPED WITH THE CP4 PUMPS. THERE ARE NUMEROUS LAWSUITS UNDERWAY FOR THIS FAILURE INCLUDING ONE OF A MAJOR ACCIDENT WHILE TOWING (WHAT THESE TRUCKS ARE MADE FOR) BECAUSE OF LOSS OF POWER STEERING AND BRAKING UPON ENGINE STALL AFTER FUEL PUMP EXPLOSION. THE GM TECHNICAL SERVICE BULLETIN FOR REFERENCE IS #16-NA-102. IN ADDITION, THE NHTSA HAS RECEIVED TWO MANUFACTURER TECHNICAL SERVICE BULLETINS ON THIS VERY SAFETY ISSUE. THIS IS VERY MUCH A RECALL WORTHY SAFETY ISSUE. LOSING ENGINE POWER AND LOSS TO ALL POWER STEERING AND POWER BRAKING IN THESE VEHICLES IS BEYOND DANGEROUS. IN ADDITION, WHEN IT IS HAPPENING TO VEHICLES DESIGNED TO TOW WEIGHTS IN EXCESS OF 30K POUNDS TRAILER LOAD BEHIND THE AFFECTED VEHICLE THE DANGER IS AMPLIFIED THAT MUCH GREATER. PLEASE ISSUE A RECALL IMMEDIATELY. PEOPLE'S LIVES ARE VERY MUCH AT STAKE FOR GM'S FAILURE TO REMEDY A KNOWN SAFETY ISSUE. GM LISTS IT AS ONLY A "HARD START OR NO START". THEY DO NOT RECOGNIZE IN WRITING THE DANGER OF FULL POWER LOSS AT HIGHWAY SPEEDS WHICH IS MOST OFTEN HOW IT PRESENTS ITSELF.

  • Filed Mar 2018

    FRONT TIRES ARE CONTINUALLY WEARING ON THE FRONT OUTSIDE EDGE. WEARING UNTIL BALD IN FIRST 15000 MILES OF OWNERSHIP, MULTIPLE FRONT END ALIGNMENT CALIBRATION TESTS AND ACTUAL FRONT END CALIBRATION NOT RESOLVING ISSUE. FRONT TIRES REPLACED AT APPROXIMATELY 23,000 MILES AND AGAIN WEARING ON OUTSIDE EDGE AT 40,000 MILES. WORSE ON DRIVER SIDE. CONTACTED DEALER SEVERAL TIMES FOR RESOLUTION AND CONTACTED GM TWICE TO OPEN TICKET. LAST GM TICKET WAS 8-4030406653. TIRES ARE MICHELIN AND ARE SUPPOSED TO LAST 65,000 MILES. NEVER SEEN THIS TYPE OF WEAR ON ANY PAST GM VEHICLE OWNED. REAR TIRES ARE IN EXCELLENT CONDITION. UNABLE TO GET DEALER OR GM TO FIND CAUSE AND RESOLVE ONCE AND FOR ALL. TIRED OF PAYING OUT OF POCKET ALIGNMENT COSTS. THE FRONT TIRES ARE ON THE SECOND SET AND THE CURRENT VEHICLE MILEAGE IS 42K. I HAVE ATTACHED IMAGES OF FRONT DRIVER SIDE TIRE WHICH HAS GREATEST WEAR AND IMAGE 20180328_113012.JPG IS THE ORIGINAL BACK TIRES WHICH HAVE NO WEAR. FRONT ARE THE SECOND SET SINCE PURCHASING VEHICLE. ORIGINAL SET WAS COMPLETELY BALD ON OUTSIDE EDGE BEFORE 19K MILES.

  • Showing the 5 most recent of 10.
• Service Brakes8

  2 involved a crash

  • Filed Aug 2026

    The contact owns a 2015 GMC Sierra 3500. The contact stated that the brake pedal and accelerator pedal lifted while depressed, causing the engine to rev. There were no warning lights illuminated. The dealer was contacted and made aware of the failure. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the issue. The failure mileage was approximately 37,000.

  • Filed Jan 2023

    The contact owns a 2015 GMC Sierra 1500. The contact stated her husband was driving when the vehicle in front of them applied the brakes unexpectedly, the driver depressed the brake pedal but failed to stop the vehicle due to the brake pedal being resistant/ rigid causing the vehicle to rear-end the other vehicle. The contact stated no warning light was illuminated. The air bags did not deploy. The contact stated no one was injured nor sought medical attention. A police report was filed. The driver was able to continue driving to their destination. The contact took the vehicle to the local dealer, where it was diagnosed that the vacuum pump had to be replaced. The dealer replaced the vacuum pump back in October of 2022. The vehicle was repaired but the second vacuum pump was also defective and the dealer replaced it on-site for a third time. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 85,500. The contact stated that the failure speed was no more than 70 mph.

  • Filed Oct 2020

    AFTER 3 ATTEMPTS TO CORRECT THE BRAKE PROBLEM BY GREINER GM. THE LAST TIME I DROVE THIS TRUCK THE BRAKES LOCKED UP IN THE MIDDLE OF THE HWY FOR NO REASON TRUCK WAS BROUGHT BACK TO DEALERSHIP WHERE THEY HAVE HAD GM SPECIALIST CHECK IT OUT AND I HAVE BEEN TOLD THE TRUCK IS UN REPAIRABLE , I AM SEEKING A BUY BACK FROM GM AS OF 10/15/20 DEALER INFO: GREINER GMC. SERVICE MANAGER : GABRIEL DURON SERVICE MANAGER GREINER BUICK GMC (760)245-3452 EXT 207

  • Filed May 2019

    I WAS TRAVELING ON A BUSY ROADWAY AT 40 MPH WHEN FUEL FILTER WARNING LIGHT CAME ON SUDDENLY AND VEHICLE LOST ALL POWER - INCLUDING THE LOSS OF POWER STEERING AND POWER BRAKING. THANKFULLY I HAD NOT YET ENTERED THE HIGHWAY AND WAS ABLE TO SLOW VEHICLE DOWN BUT WITH GREAT DIFFICULTY AND NOT INJURE ANYONE AROUND AND THAT DAY WAS NOT TOWING A LOAD. VEHICLE WOULD NOT RESTART. I HAD IT TOWED TO NEAREST DEALERSHIP WHO THEN INFORMED ME THAT THE "BOSCH CP4 FUEL PUMP" HAD EXPLODED SENDING METAL SHRAPNEL THROUGHOUT THE ENTIRE ENGINES FUEL SYSTEM. THE ONLY FIX WAS THE ENTIRE REPLACEMENT OF THE FUEL SYSTEM AT A COST OF OVER $11K. I HAD JUST PURCHASED THE TRUCK 3 MONTHS PRIOR. UPON HEARING THIS, I SEE THIS HAS BEEN A FREQUENT SAFETY PROBLEM AFFECTING A WHOLE LINE OF 2011 - CURRENT GM, FORD, DODGE, AND JEEP DIESEL VEHICLES EQUIPPED WITH THE CP4 PUMPS. THERE ARE NUMEROUS LAWSUITS UNDERWAY FOR THIS FAILURE INCLUDING ONE OF A MAJOR ACCIDENT WHILE TOWING (WHAT THESE TRUCKS ARE MADE FOR) BECAUSE OF LOSS OF POWER STEERING AND BRAKING UPON ENGINE STALL AFTER FUEL PUMP EXPLOSION. THE GM TECHNICAL SERVICE BULLETIN FOR REFERENCE IS #16-NA-102. IN ADDITION, THE NHTSA HAS RECEIVED TWO MANUFACTURER TECHNICAL SERVICE BULLETINS ON THIS VERY SAFETY ISSUE. THIS IS VERY MUCH A RECALL WORTHY SAFETY ISSUE. LOSING ENGINE POWER AND LOSS TO ALL POWER STEERING AND POWER BRAKING IN THESE VEHICLES IS BEYOND DANGEROUS. IN ADDITION, WHEN IT IS HAPPENING TO VEHICLES DESIGNED TO TOW WEIGHTS IN EXCESS OF 30K POUNDS TRAILER LOAD BEHIND THE AFFECTED VEHICLE THE DANGER IS AMPLIFIED THAT MUCH GREATER. PLEASE ISSUE A RECALL IMMEDIATELY. PEOPLE'S LIVES ARE VERY MUCH AT STAKE FOR GM'S FAILURE TO REMEDY A KNOWN SAFETY ISSUE. GM LISTS IT AS ONLY A "HARD START OR NO START". THEY DO NOT RECOGNIZE IN WRITING THE DANGER OF FULL POWER LOSS AT HIGHWAY SPEEDS WHICH IS MOST OFTEN HOW IT PRESENTS ITSELF.

  • Filed May 2017

    THIS VEHICLE HAS HAD NUMEROUS ELECTRICAL ISSUE FROM THE FIRST FEW MONTHS OF OWNERSHIP. THE TRAILER BRAKE SYSTEM FAILED AND WAS REPLACED ON OCTOBER 2014. THE VEHICLE HAS HAD MANY RECALLS THAT HAVE BEEN CORRECTED BY OWNER AND SERVICE PROVIDER. THE SECOND SUMMER OF OWNERSHIP THE VEHICLE HAD RADIATOR ISSUES, AND MOST RECENTLY ELECTRICAL ISSUES AGAIN AND TRANSMISSION ISSUES. WHILE DRIVING THE VEHICLE ELECTRICAL DASHBOARD GOES INTO A FLICKER AND SHUTS DOWN. GMC WAS ABLE TO FIX THIS ISSUE AT THE OWNERS COST WITH THE VEHICLE BEING OUT OF SERVICE FOR 3 WEEKS. GMC WAS TO REIMBURSE THE OWNER FOR COSTS OF A GM DEALER THAT WAS NOT ABLE TO FIX THE ISSUE (PAINTER AUTOMOTIVE)(FEBRUARY 9, 2017) OF $300, THIS HAS NOT BEEN REIMBURSED. THE VEHICLE IS NOW AT THE SERVICE STATION AS IT DOES NOT START WITH NO CODES. IT HAS BEEN OUT OF SERVICE FOR 2 WEEKS AND COUNTING, THIS VEHICLE IS NO LONGER RELIABLE OR SAFE FOR US TO DRIVE. WE HAVE DOCUMENTATION OF ALL THE ISSUES AND VIDEO OF THE DASHBOARD FLICKER.

  • Showing the 5 most recent of 8.
• Air Bags8

  2 involved a crash

  • Filed Aug 2025

    The contact owns a 2015 GMC Sierra 3500. The contact stated that after parking in the driveway and turning off the vehicle, approximately 30 minutes later, the rear passenger’s side roof rail air bag erroneously deployed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The vehicle was not yet repaired. The contact was informed that the VIN was included in the NHTSA Campaign Number: 21V504000 (AIR BAGS). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 155,000. The VIN was not available.

  • Filed Jun 2024

    The contact owns a 2015 GMC Sierra 3500. The contact received notification of NHTSA Campaign Number: 21V504000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

  • Filed Aug 2022

    The contact owns a 2015 GMC Sierra. The contact received notification of NHTSA Campaign Number 21V504000(Air Bag) however, the part to do the recall repair was unavailable. The local dealer was contacted and it was confirmed that the part was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue and confirmed that the part was currently on backorder. The contact had not experienced the failure. The VIN tool confirms parts distribution disconnect.

  • Filed Aug 2022

    The contact owns a 2015 GMC Sierra. The contact received notification of NHTSA Campaign Number: 21V504000 ( Air Bags ) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Vin tool confirms parts distribution disconnect.

  • Filed Apr 2022

    2015 GMC SIERRA. CONSUMER WRITES IN REGARDS TO ROOF RAIL AIRBAG (RRAB) INFLATORS SAFETY RECALL. * RECALL REMEDY IS NOT YET AVAILABLE. * TS THE CONSUMER WAS INFORMED THE PARTS TO COMPLETE THE RECALL REPAIR WERE NOT YET AVAILABLE. THE CONSUMER REFERENCED RECALL N202324251. THE CONSUMER STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME COMPLETING THE RECALL REPAIR.

  • Showing the 5 most recent of 8.
• Power Train8

  2 involved a crash · 1 involved a fire

  • Filed Feb 2017

    MY VEHICLE IS BEING HACKED AND CONTROLLED BY OTHER DRIVERS USING CELL PHONES TO GAIN ACCESS TO MY VEHICLE WHILE DRIVING! , AND WHEN PASSING OR SITTING IN TRAFFIC! THIS HAS BEEN GOING ON FOR OVER SIX MONTHS NOW, EVERY DAY! ALL DAY LONG!! HAVE CONTACTED GMC OVER AND OVER, HAVE BEEN TO THEIR SHOPS OVER AND OVER! , THEY LAUGH AT ME , AND TELL ME NOTHING IS WRONG EVERY TIME. FCC, ONSTAR, S. XM RADIO, ALL REFUSE TO HELP ME WITH THIS PROBLEM, OVER AND OVER , MY VEHICLE STARTS TO SMOKE WHEN THEY ARE DOING THIS, THEY ARE BESIDE ME LAUGHING WITH THEIR CELL PHONES IN HAND. I AM GOING TO RECORD THIS AND THEN FILE SUIT AGAINST EVERY ONE OF THEM!!!!

  • Filed Mar 2016

    DRIVING NORTH ON THE GARDEN STATE PARKWAY IN THE CENTER LANE IT FELT LIKE I HAD A BACK TIRE BLOWOUT BUT WHAT HAPPENED WAS MY REAR AXLE BROKE CAUSING MY VEHICLE TO BE EXTREMELY HARD TO CONTROL. I WAS TRYING TO STEER THE VEHICLE BUT COULD NOT CONTROL THE TRUCK, IT FELT LIKE I HAD LIMITED BRAKING ABILITY, SMASHING INTO GUARDRAIL IT FINALLY CAME TO A STOP.

  • Filed Sep 2015

    TL* 2015 GMC SIERRA. WHILE THE VEHICLE WAS PARKED, IT BEGAN TO COAST BACKWARDS AND COLLIDED INTO THE SIDE OF A BUILDING WITHOUT WARNING. THE AIR BAGS DID NOT DEPLOY. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. AFTER THE CRASH, THE GEAR SHIFTER REMAINED IN PARK. THE VEHICLE WAS NOT DIAGNOSED, BUT WAS CURRENTLY BEING REPAIRED FOR DAMAGES SUSTAINED FROM THE CRASH. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 14V374000 (POWER TRAIN). THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 8,000. THE CONSUMER WHO WROTE IN, WORKS AT THE CAR WASH. AN EMPLOYEE AT THE CAR WASH, DROVE THE VEHICLE OUT OF THE CAR WASH AND PLACE THE VEHICLE IN PARK TO HAVE THE DETAIL WORK COMPLETED. THE VEHICLE WAS LEFT WHILE ANOTHER VEHICLE WAS RETRIEVED FROM THE CONVEYOR BELT. THE GMC ROLLED BACK AND CRASHED INTO THE CAR WASH BUILDING. APPARENTLY, THE EMPLOYEE THOUGHT THE VEHICLE WAS IN PARK, WHEN IT WAS IN FACT IN NEUTRAL.

  • Filed Sep 2015

    VEHICLE RANDOMLY AND REPEATEDLY SHIFTS INTO NEUTRAL FROM DRIVE, WITOUT ANY INPUT FROM DRIVER, DURING NORMAL DRIVING CONDITIONS. VEHICLE RANDOMLY AND REPEATEDLY LOSES ACCELERATOR PEDAL CONTROL AND FUNCTIONALITY DURING NORMAL DRIVING CONDITIONS.

  • Filed Aug 2015

    TL* THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE TRANSMISSION VIBRATED CAUSING A HESITATION WHEN THE GEARS SHIFTED. THE CONTACT MENTIONED THAT THE FAILURE WAS MOST SEVERE WHILE DRIVING AT SPEEDS BETWEEN 40-50 MPH. THE VEHICLE WAS TAKEN TO A DEALER WHO CHANGED THE GEAR RATIO AND ADJUSTED THE REAR END. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 250.

  • Showing the 5 most recent of 8.
• Electrical System7

  1 involved a fire

  • Filed Mar 2023

    The contact owns a 2015 GMC Sierra. The contact stated that when doing the initial start, the rear of the vehicle began smoking and caught on fire. The contact turned off the vehicle and the fire settled however shortly after the rear window fractured. There were no injuries and no medical attention needed. There was no fire report. The contact had taken the vehicle to the dealer who stated that the window needed to be replaced and there was a Canadian recall (Manufacturer Number N192220470 ) for the rear windows defrost failing. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 152,000.

  • Filed Dec 2022

    The service trailer brake icon keeps appearing on my screen I’m afraid it’s going to not work properly when towing trailers it’s constantly going on and off I believe it’s the brake control module switch but also could be in the harness just want Gm to be aware of the many blogs that I have read about with this problem The problem first appeared about two months ago

  • Filed Sep 2022

    The contact owns a 2015 GMC Sierra 3500. The contact stated while driving 55 MPH, another vehicle merged into the lane that the contact was driving in and the contact pressed on the horn pad however, there was no sound coming from the horn. The vehicle was taken to an independent mechanic and the horn was replaced. The contact stated the failure had occurred several times and the horn was replaced each time. The manufacturer was contacted and stated there was no recall related to the failure and offered no additional assistance. The failure mileage was 120,000.

  • Filed Sep 2022

    4 weeks ago, constant repeated loud chime and visual warning stating " service trailer brake system". This is constantly alarming and unable to be cancelled or acknowledged throughout the drive. This results in distracted driving. Furthermore, it occurs both when towing a trailer or not towing. I have noticed decreased braking of the trailer as well. Have not gone to dealer yet.

  • Filed Jan 2021

    THE COMMUNICATIONS QUIT WORKING, I CAN NOT USE THE HANDS FREE ON MY PHONE

  • Showing the 5 most recent of 7.
• Engine6

  • Filed Jan 2024

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 65 MPH, there was a loud pop in the engine compartment. The vehicle was steered to the side of the road where condensation was observed in the middle of the road. The vehicle was towed to a dealer where it was diagnosed that the radiator and transmission needed to be replaced. The vehicle was not repaired. On another occasion, while driving at approximately 20 MPH, the vehicle lost motive power. The vehicle was towed to a dealer where it was determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 170,000.

  • Filed Jul 2022

    Vehicle has a cp4 fuel pump. This pump has a high failure rate. Upon failure the vehicle shuts down and cannot be restarted. This can happen at any time and anywhere. Can happen while on a highway or freeway. This vehicle is used to haul heave loads. This failure can ending up to $10,000 or more to repair. This failure has not happened on this vehicle yet. Am very concerned about me safety and the safety of others because of the high failure rate.

  • Filed Jan 2020

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 3500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 70 MPH A KNOCKING NOISE WAS PRESENT COMING FROM THE ENGINE AND HEAVY SMOKE WAS SEEN COMING OUT OF THE EXHAUST. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THE PISTON FRACTURED AND THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE LOCAL DEALER FAIR GROUNDS GMC (100 FAIRGROUNDS RD, ROLLA MO) WAS NOTIFIED OF THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 106,000. THE VIN WAS NOT AVAILABLE.

  • Filed Oct 2017

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 3500. WHILE DRIVING, THE SERVICE EXHAUST WARNING ERROR INDICATOR ILLUMINATED. IN ADDITION, THE SERVICE TRAILER BRAKES ERROR MESSAGE ILLUMINATED, WHICH CAUSED THE BRAKES TO FAIL ON THE TRAILER. THE CONTACT UNATTACHED THE TRAILER AND THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. THE VEHICLE WAS TAKEN TO GROWNEY MOTORS (1160 MAIN ST, RED BLUFF, CA 96080) WHERE IT WAS DIAGNOSED THAT THE HEAT SENSOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 36,500. THE VIN WAS NOT PROVIDED.

  • Filed May 2015

    WHILE DRIVING WHITE SMOKE BELLOWING OUT FRONT RIGHT TIRE WHEEL WELL. UPON INSPECTION, SMOKE COMING FROM EXHAUST PIPE CLAMP NEAR TURBO. SMELL SO BAD HAVE TO DRIVE WITH WINDOW OPEN. IT APPEARS ENGINE ON FIRE FROM THE AMOUNT OF SMOKE EMITTING FROM UNDER THE HOOD. AT IDLE IT GET WORSE. IT APPEARS SMOKE IS EXHAUST FUMES LEAKING FROM THE PIPE JOINT. NO ENGINE LIGHT TO INDICATE A PROBLEM.

  • Showing the 5 most recent of 6.
• Unknown or Other5

  1 involved a fire

  • Filed Jan 2021

    THE COMMUNICATIONS QUIT WORKING, I CAN NOT USE THE HANDS FREE ON MY PHONE

  • Filed Mar 2018

    FRONT TIRES ARE CONTINUALLY WEARING ON THE FRONT OUTSIDE EDGE. WEARING UNTIL BALD IN FIRST 15000 MILES OF OWNERSHIP, MULTIPLE FRONT END ALIGNMENT CALIBRATION TESTS AND ACTUAL FRONT END CALIBRATION NOT RESOLVING ISSUE. FRONT TIRES REPLACED AT APPROXIMATELY 23,000 MILES AND AGAIN WEARING ON OUTSIDE EDGE AT 40,000 MILES. WORSE ON DRIVER SIDE. CONTACTED DEALER SEVERAL TIMES FOR RESOLUTION AND CONTACTED GM TWICE TO OPEN TICKET. LAST GM TICKET WAS 8-4030406653. TIRES ARE MICHELIN AND ARE SUPPOSED TO LAST 65,000 MILES. NEVER SEEN THIS TYPE OF WEAR ON ANY PAST GM VEHICLE OWNED. REAR TIRES ARE IN EXCELLENT CONDITION. UNABLE TO GET DEALER OR GM TO FIND CAUSE AND RESOLVE ONCE AND FOR ALL. TIRED OF PAYING OUT OF POCKET ALIGNMENT COSTS. THE FRONT TIRES ARE ON THE SECOND SET AND THE CURRENT VEHICLE MILEAGE IS 42K. I HAVE ATTACHED IMAGES OF FRONT DRIVER SIDE TIRE WHICH HAS GREATEST WEAR AND IMAGE 20180328_113012.JPG IS THE ORIGINAL BACK TIRES WHICH HAVE NO WEAR. FRONT ARE THE SECOND SET SINCE PURCHASING VEHICLE. ORIGINAL SET WAS COMPLETELY BALD ON OUTSIDE EDGE BEFORE 19K MILES.

  • Filed Feb 2017

    MY VEHICLE IS BEING HACKED AND CONTROLLED BY OTHER DRIVERS USING CELL PHONES TO GAIN ACCESS TO MY VEHICLE WHILE DRIVING! , AND WHEN PASSING OR SITTING IN TRAFFIC! THIS HAS BEEN GOING ON FOR OVER SIX MONTHS NOW, EVERY DAY! ALL DAY LONG!! HAVE CONTACTED GMC OVER AND OVER, HAVE BEEN TO THEIR SHOPS OVER AND OVER! , THEY LAUGH AT ME , AND TELL ME NOTHING IS WRONG EVERY TIME. FCC, ONSTAR, S. XM RADIO, ALL REFUSE TO HELP ME WITH THIS PROBLEM, OVER AND OVER , MY VEHICLE STARTS TO SMOKE WHEN THEY ARE DOING THIS, THEY ARE BESIDE ME LAUGHING WITH THEIR CELL PHONES IN HAND. I AM GOING TO RECORD THIS AND THEN FILE SUIT AGAINST EVERY ONE OF THEM!!!!

  • Filed Mar 2016

    MY VEHICLE SHAKES AT HIGHWAY SPEED. I CAN FEEL IT IN THE STEERING WHEEL, AND SEAT. VISUALLY I CAN SEE THE BED OF THE TRUCK SHAKE. THE ISSUE HAS NOT GONE AWAY.

  • Filed May 2015

    A WEEK LATER AFTER BUYING A NEW 2015 GMC SIERRA DELANI FROM ED MORSE GMC 'SAWGRASS I TOOK IT TO A TRUCK ACCESSORY COMPANY TO ORDER A NEW BED (TONNEAU) COVER. THEY TOOK THE ORDER AND TOOK A PICTURE OF THE SERVICE PARTS IDENTIFICATION LABEL, LOCATED IN THE TRUCK GLOVE BOX FOR THE PURPOSE OF ORDERING THE PART AND COLOR. THIS IS THE ONLY PLACE IN THE TRUCK THAT IDENTIFIES THE PARTS AND COLOR FOR THIS PARTICULAR VEHICLE. I AM ENCLOSING A PICTURE FOR YOUR REVIEW. TEN DAYS LATER THE COVER ARRIVED AND WHEN I WENT TO THE COMPANY TO HAVE IT INSTALLED, THEY REMOVED THE WRAPPING TO SHOW ME THE COVER AND WE FOUND OUT THAT IT WAS NOT THE RIGHT COLOR. THE COVER WAS WHITE INSTEAD OF BLACK. THE COMPANY MANAGER CHECKED THE ORDER TWICE TO VERIFY THAT THEY HAD ORDERED IT CORRECTLY AND THAT HAD THE CORRECT DECAL INFORMATION. THIS IS WHEN WE FOUND OUT THE CODE INFORMATION IN THE SERVICE PARTS IDENTIFICATION LABEL IN MY TRUCK WAS INCORRECT, THE CODE FOR THE PAINT SAID WHITE NOT ONYX BLACK AS THE COLOR OF MY VEHICLE. THEY SAID WE CAN RE-ORDER THE TOP IN THE RIGHT COLOR, BUT WILL NOT BE ABLE TO REFUND YOUR DEPOSIT BECAUSE IT WAS NOT THEIR FAULT BUT GMC. WE CONTACTED GMC ON 2/11 TALKED TO SHELLY AND SHE SAID THEY COULD NOT HELP US; THEY WOULD NOT EVEN PUT A MANAGER ON THE PHONE. THEN WE CONTACTED THE DEALER WHO HAD SOLD US THE TRUCK, ED MORSE GMC-SAWGRASS, FL. THE DEALER TOLD US THAT HAD CONTACTED GMC BUT THEY WOULD NOT DO ANYTHING ABOUT THE WRONG SERVICE PART DECAL WE WANT GMC TO FIX THIS PROBLEM REPLACING THE DECAL BECAUSE THE INFORMATION IN THIS DECAL IS VITAL TO ORDER CORRECT PARTS FOR THIS VEHICLE AND WE KNOW THAT SOONER OR LATER WE ARE GOING TO NEED THE CORRECT INFORMATION. IF THEY CAN'T FIX THIS PROBLEM THEY SHOULD REPLACE THE TRUCK.

• Fuel/Propulsion System3

  • Filed Apr 2021

    I SEE THERE WAS A RECALL FROM GM #17399 FOR THE 2015 DUAL FUEL TANK SENDING UNIT PROBLEM. THIS IS ONLY FOR THE 6.0 L GAS ENGINE. I HAVE THE DURAMAX 6.6L ENGINE IN MINE. I HAD THE SAME PROBLEM WITH MINE. THE SENDING UNIT DID NOT TURN OFF THE TRANSFER PUMP AND OVERFILLED THE FRONT TANK CAUSING FUEL TO POUR OUT ALL OVER THE ROAD. I CAUGHT IT BEFORE THE DRIVE LINE CAUSED ANY DAMAGE. I HAD IT TOWED TO THE DEALER AND WHILE WE MOVED IT TO PULL IT UP ON THE TOW TRUCK IT WAS PUSHING FUEL OUT OF THE FILLER NECK OF THE FRONT TANK. THE DEALER SHIP REFUSED TO COVER THE COST SAYING ITS NOT PART OF THE RECALL. THEY SAID IT WASN'T THE SAME PROBLEM. IT SURE WAS. I HAVE ATTACHED THE REPAIR ORDER AND THE RECALL NOTIFICATION BELOW. I AM WONDERING IF IT IS PART OF THE RECALL AND THEY ARE JUST NOT DOING THEIR JOB AND HONERING IT.

  • Filed May 2019

    I WAS TRAVELING ON A BUSY ROADWAY AT 40 MPH WHEN FUEL FILTER WARNING LIGHT CAME ON SUDDENLY AND VEHICLE LOST ALL POWER - INCLUDING THE LOSS OF POWER STEERING AND POWER BRAKING. THANKFULLY I HAD NOT YET ENTERED THE HIGHWAY AND WAS ABLE TO SLOW VEHICLE DOWN BUT WITH GREAT DIFFICULTY AND NOT INJURE ANYONE AROUND AND THAT DAY WAS NOT TOWING A LOAD. VEHICLE WOULD NOT RESTART. I HAD IT TOWED TO NEAREST DEALERSHIP WHO THEN INFORMED ME THAT THE "BOSCH CP4 FUEL PUMP" HAD EXPLODED SENDING METAL SHRAPNEL THROUGHOUT THE ENTIRE ENGINES FUEL SYSTEM. THE ONLY FIX WAS THE ENTIRE REPLACEMENT OF THE FUEL SYSTEM AT A COST OF OVER $11K. I HAD JUST PURCHASED THE TRUCK 3 MONTHS PRIOR. UPON HEARING THIS, I SEE THIS HAS BEEN A FREQUENT SAFETY PROBLEM AFFECTING A WHOLE LINE OF 2011 - CURRENT GM, FORD, DODGE, AND JEEP DIESEL VEHICLES EQUIPPED WITH THE CP4 PUMPS. THERE ARE NUMEROUS LAWSUITS UNDERWAY FOR THIS FAILURE INCLUDING ONE OF A MAJOR ACCIDENT WHILE TOWING (WHAT THESE TRUCKS ARE MADE FOR) BECAUSE OF LOSS OF POWER STEERING AND BRAKING UPON ENGINE STALL AFTER FUEL PUMP EXPLOSION. THE GM TECHNICAL SERVICE BULLETIN FOR REFERENCE IS #16-NA-102. IN ADDITION, THE NHTSA HAS RECEIVED TWO MANUFACTURER TECHNICAL SERVICE BULLETINS ON THIS VERY SAFETY ISSUE. THIS IS VERY MUCH A RECALL WORTHY SAFETY ISSUE. LOSING ENGINE POWER AND LOSS TO ALL POWER STEERING AND POWER BRAKING IN THESE VEHICLES IS BEYOND DANGEROUS. IN ADDITION, WHEN IT IS HAPPENING TO VEHICLES DESIGNED TO TOW WEIGHTS IN EXCESS OF 30K POUNDS TRAILER LOAD BEHIND THE AFFECTED VEHICLE THE DANGER IS AMPLIFIED THAT MUCH GREATER. PLEASE ISSUE A RECALL IMMEDIATELY. PEOPLE'S LIVES ARE VERY MUCH AT STAKE FOR GM'S FAILURE TO REMEDY A KNOWN SAFETY ISSUE. GM LISTS IT AS ONLY A "HARD START OR NO START". THEY DO NOT RECOGNIZE IN WRITING THE DANGER OF FULL POWER LOSS AT HIGHWAY SPEEDS WHICH IS MOST OFTEN HOW IT PRESENTS ITSELF.

  • Filed Sep 2015

    VEHICLE RANDOMLY AND REPEATEDLY SHIFTS INTO NEUTRAL FROM DRIVE, WITOUT ANY INPUT FROM DRIVER, DURING NORMAL DRIVING CONDITIONS. VEHICLE RANDOMLY AND REPEATEDLY LOSES ACCELERATOR PEDAL CONTROL AND FUNCTIONALITY DURING NORMAL DRIVING CONDITIONS.

• Visibility/Wiper3

  • Filed Jan 2019

    SITTING IN A PARKING LOT ALLOWING THE PICKUP TO WARM UP, THE REAR DEFROSTER WAS ON AND STARTED HAVING A CRACKLING SOUND AND SMOKING. THE NOISE AND SMOKE STOPPED WHEN THE REAR DEFROSTER WAS TURNED OFF, HOWEVER APPROXIMATELY A MINUTE LATER THE WINDOW SHATTERED AND SPRAYED GLASS SHARDS INTO THE CAB AND ON THE BACK SEAT. THE PICKUP WAS STATIONARY AND THERE WAS NO POSSIBILITY THAT THIS WAS CAUSED BY AN IMPACT. BASED ON THE PATTERN OF BROKEN GLASS IT COULD BE SEEN COMING FROM THE CORNER OF THE WINDOW WHERE THE HEATING ELEMENT IS. I CALLED GM AND THEY INDICATED THEY WOULD NOT LOOK AT THE VEHICLE FOR AT LEAST 30 DAYS TO EVEN DETERMINE THE ISSUE.

  • Filed Aug 2015

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT THE VISIBILITY IN THE HEADLAMPS WAS NOT ILLUMINATING PROPERLY IN ORDER TO BE ABLE TO VIEW THE ROAD. THE VEHICLE WAS TAKEN TO A DEALER WHERE THEY DID NOT DIAGNOSE OR REPAIR THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,200.

  • Filed Mar 2015

    THE NEW TOW MIRRORS ON THIS TRUCK HAVE LED BLINKERS THAT ARE SO BRIGHT YOU CAN'T TELL IF SOMEONE IS COMING TOWARDS YOU WHEN YOU HAVE THE BLINKER ON. IT'S FLASHING RIGHT IN YOUR FACE. *TR

• Seats3

  • Filed Feb 2016

    TL* THE CONTACT OWNS A 2015 GMC SIERRA. WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE BEGAN TO VIBRATE. THE LONGER THE VEHICLE WAS DRIVEN, THE MORE IT SHOOK. THE CONTACT TOOK THE VEHICLE TO THE DEALER SEVERAL TIMES, BUT NO FAILURE WAS FOUND. THE DEALER TEST DROVE THE VEHICLE AND IT DID NOT VIBRATE. THE DEALER REPLACED THE TIRES, TRANSMISSION, AND SHOCKS; HOWEVER,, THE FAILURE RECURRED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THE SEAT WARMERS ALSO FAILED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 2,500.

  • Filed Aug 2015

    1ST INCIDENT VEH DIDN'T SWITCH FROM 4 TO 2WD, STOP VEH, WORK SWITCH, WENT TO 2WD. SAME TIME DRIVER SEAT WENT FULL FORWARD, SEAT BACK FULL FORWARD, BRAKE PEDAL FULL TOWARDS DRIVER. ABLE TO READJUST, ONSTAR SAID VARIOUS ELECTRICAL - BELIEVE MODULES- PROBLEM. WAS ABLE TO DRIVE, TOOK TO DEALER, UNABLE TO REPLICATE. FEW MONTHS LATER ADJUSTED GAIN ON ELECTRIC TRAILER BRAKE CONTROL - WHILE IN MOTION. SAME PROPLEM, SEAT AND SEAT BACK FULL FORWARD, BRAKE PEDAL FULL TOWARDS DRIVER. LUCKILY I KNEW WHAT WAS HAPPENING AND WASN'T STARTLED. 4WD CONTROL @ GAIN CONTROL ABOVE EACH OTHER, LEFT SIDE OF DASH. NO OTHER TRBL WITH VEH. A 2015 GMC 3500 CREW CAB 4WD DIESEL LONG BOX, NUMEROUS OPTIONS INCLUDING HEATED-COOLED LEATHE POWER SEATS & POWER ADJUST PEDALS. BOTH PEDALS MOVED TOGETHER TOWARDS ME. MILEAGE 1ST TIME, LESS THAN 10,000 2ND TIME LESS THAN 13,000.

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

• Hydraulic2

  • Filed Aug 2026

    The contact owns a 2015 GMC Sierra 3500. The contact stated that the brake pedal and accelerator pedal lifted while depressed, causing the engine to rev. There were no warning lights illuminated. The dealer was contacted and made aware of the failure. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the issue. The failure mileage was approximately 37,000.

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

• Vehicle Speed Control2

  1 involved a fire

  • Filed Aug 2026

    The contact owns a 2015 GMC Sierra 3500. The contact stated that the brake pedal and accelerator pedal lifted while depressed, causing the engine to rev. There were no warning lights illuminated. The dealer was contacted and made aware of the failure. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the issue. The failure mileage was approximately 37,000.

  • Filed Feb 2017

    MY VEHICLE IS BEING HACKED AND CONTROLLED BY OTHER DRIVERS USING CELL PHONES TO GAIN ACCESS TO MY VEHICLE WHILE DRIVING! , AND WHEN PASSING OR SITTING IN TRAFFIC! THIS HAS BEEN GOING ON FOR OVER SIX MONTHS NOW, EVERY DAY! ALL DAY LONG!! HAVE CONTACTED GMC OVER AND OVER, HAVE BEEN TO THEIR SHOPS OVER AND OVER! , THEY LAUGH AT ME , AND TELL ME NOTHING IS WRONG EVERY TIME. FCC, ONSTAR, S. XM RADIO, ALL REFUSE TO HELP ME WITH THIS PROBLEM, OVER AND OVER , MY VEHICLE STARTS TO SMOKE WHEN THEY ARE DOING THIS, THEY ARE BESIDE ME LAUGHING WITH THEIR CELL PHONES IN HAND. I AM GOING TO RECORD THIS AND THEN FILE SUIT AGAINST EVERY ONE OF THEM!!!!

• Engine And Engine Cooling2

  • Filed Jan 2024

    The contact owns a 2015 GMC Sierra 3500. The contact stated while driving approximately 70 MPH, the vehicle abruptly lost motive power and decelerated to 25 MPH. The contact stated that the message “Engine Power Reduced” was displayed. The contact stated that the failure was intermittent, but always occurred while driving at high speeds. The contact had taken the vehicle to a local dealer however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 48,815,

  • Filed Jan 2024

    The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 65 MPH, there was a loud pop in the engine compartment. The vehicle was steered to the side of the road where condensation was observed in the middle of the road. The vehicle was towed to a dealer where it was diagnosed that the radiator and transmission needed to be replaced. The vehicle was not repaired. On another occasion, while driving at approximately 20 MPH, the vehicle lost motive power. The vehicle was towed to a dealer where it was determined that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 170,000.

• Suspension2

  • Filed Oct 2017

    VEHICLE WAS DELIVERED TO ME WITH PHYSICAL DAMAGE THE ONE OF THE SHOCKS. PART OF THE SHOCK TUBE IS CRUSHED IN, UP HIGH AWAY FROM THE ROADWAY. MOST LIKELY CAUSE IS DAMAGE DURING VEHICLE TRANSPORTATION FROM FACTORY. TWO DEALERSHIPS HAVE CONFIRMED THIS IS THE MOST LIKELY AND POSSIBLE CAUSE. I HAVE BROUGHT THE VEHICLE IN AT LEAST 3 TIMES TO A DEALER, AND HAVE BEEN TOLD THAT ONLY THE DEALERSHIP I PURCHASED THE VEHICLE FROM CAN PERFORM THE WARRANTY WORK FOR THIS REPAIR. I HAVE ALSO CALLED GMC CUSTOMER SERVICE NUMBER IN THE OWNERS MANUAL AND MADE A COMPLAINT THERE AS WELL. I WAS TOLD THE SAME THING BY THE PERSON HANDLING THE COMPLAINT, THAT I WOULD HAVE TO TAKE THE VEHICLE TO THE DEALERSHIP THAT I PURCHASED IT FROM. THE PERSON SAID THEY WOULD LOOK INTO IT FURTHER, BUT NEVER CALLED ME BACK. THE DEALERSHIP I PURCHASED THE VEHICLE FROM IS LOCATED IN ANOTHER STATE, HUNDREDS OF MILES AWAY. IT IS NOT PRACTICAL TO DRIVE HUNDREDS OF MILES AWAY WHEN A LOCAL DEALERSHIP CAN PERFORM WARRANTY WORK.

  • Filed Apr 2016

    WHEN AT SPEEDS OF ROUGHLY 50MPH SEATS VIBRATE. TRUCK HAS ROUGHLY 3000MILES AND THE FRAME, REAREND AND OTHER UNDERBODY COMPONENTS HAVE ALOT OF SURFACE RUST

• Structure2

  • Filed Apr 2016

    WHEN AT SPEEDS OF ROUGHLY 50MPH SEATS VIBRATE. TRUCK HAS ROUGHLY 3000MILES AND THE FRAME, REAREND AND OTHER UNDERBODY COMPONENTS HAVE ALOT OF SURFACE RUST

  • Filed Feb 2015

    TL*THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DESCENDING DOWN HILL AT NIGHT, THE LOW BEAM HEAD LIGHT PROVIDED POOR VISIBILITY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 5. UPDATED 03/30/15*LJ UPDATED 06/23/2015*JS

• Fuel System1

  • Filed Apr 2025

    The contact owns 2015 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle lost motive power. The contact stated that the check engine warning light was illuminated for approximately a month. The vehicle was taken to an independent mechanic and the contact was informed the high-pressure fuel pump was leaking fuel into the crank case, and the high-pressure fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately 1 year and 5 months later. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle was repaired. The contact stated that on several occasions while driving at various speeds, there was a loud sound coming from the engine compartment. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel injectors on one side of the engine were not working properly, and that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 178,137.

• Gasoline1

  • Filed Apr 2025

    The contact owns 2015 GMC Sierra 1500. The contact stated that while driving on several occasions at various speeds, the vehicle lost motive power. The contact stated that the check engine warning light was illuminated for approximately a month. The vehicle was taken to an independent mechanic and the contact was informed the high-pressure fuel pump was leaking fuel into the crank case, and the high-pressure fuel pump needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately 1 year and 5 months later. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the high-pressure fuel pump needed to be replaced. The vehicle was repaired. The contact stated that on several occasions while driving at various speeds, there was a loud sound coming from the engine compartment. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel injectors on one side of the engine were not working properly, and that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 178,137.

• Visibility1

  1 involved a fire

  • Filed Mar 2023

    The contact owns a 2015 GMC Sierra. The contact stated that when doing the initial start, the rear of the vehicle began smoking and caught on fire. The contact turned off the vehicle and the fire settled however shortly after the rear window fractured. There were no injuries and no medical attention needed. There was no fire report. The contact had taken the vehicle to the dealer who stated that the window needed to be replaced and there was a Canadian recall (Manufacturer Number N192220470 ) for the rear windows defrost failing. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 152,000.

• Seat Belts1

  • Filed Feb 2019

    TL* THE CONTACT OWNS A 2015 GMC SIERRA 3500. THE CONTACT STATED THAT TWO OF THE FIVE SEAT BELTS IN THE VEHICLE FAILED TO PROPERLY RETRACT AND SECURE. THE FRONT PASSENGER AND REAR MIDDLE SEAT BELTS BECAME UNSECURED WHILE THE VEHICLE WAS IN OPERATION WITHIN WEEKS APART. THE FAILURE OCCURRED FREQUENTLY. BEAMAN BUICK GMC (1531 BROADWAY, NASHVILLE, TN 37203, (615) 251-8400) INDICATED THAT THEY WOULD ORDER THE SEAT BELT KIT, BUT DID NOT CONFIRM THE QUANTITY. THE DEALER DID NOT STATE WHETHER THE PART WAS AVAILABLE. THE CONTACT WAS CONCERNED THAT THE SEAT BELTS COULD FAIL IN THE EVENT OF A CRASH. A LOANER VEHICLE WAS NOT OFFERED WHILE WAITING TO RECEIVE THE PART. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND ISSUED NHTSA CAMPAIGN NUMBERS: 17V437000 (AIR BAGS, SEAT BELTS), 16V651000 (AIR BAGS, SEAT BELTS), AND 14V301000 (ELECTRICAL SYSTEM, SEAT BELTS). THERE WERE ALSO THREE TSBS FOR THE SEAT BELTS, BUT THE CONTACT DID NOT KNOW IF THE VEHICLE WAS INCLUDED IN ANY OF THE RECALLS OR TSBS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.

• Wheels1

  • Filed Mar 2018

    FRONT TIRES ARE CONTINUALLY WEARING ON THE FRONT OUTSIDE EDGE. WEARING UNTIL BALD IN FIRST 15000 MILES OF OWNERSHIP, MULTIPLE FRONT END ALIGNMENT CALIBRATION TESTS AND ACTUAL FRONT END CALIBRATION NOT RESOLVING ISSUE. FRONT TIRES REPLACED AT APPROXIMATELY 23,000 MILES AND AGAIN WEARING ON OUTSIDE EDGE AT 40,000 MILES. WORSE ON DRIVER SIDE. CONTACTED DEALER SEVERAL TIMES FOR RESOLUTION AND CONTACTED GM TWICE TO OPEN TICKET. LAST GM TICKET WAS 8-4030406653. TIRES ARE MICHELIN AND ARE SUPPOSED TO LAST 65,000 MILES. NEVER SEEN THIS TYPE OF WEAR ON ANY PAST GM VEHICLE OWNED. REAR TIRES ARE IN EXCELLENT CONDITION. UNABLE TO GET DEALER OR GM TO FIND CAUSE AND RESOLVE ONCE AND FOR ALL. TIRED OF PAYING OUT OF POCKET ALIGNMENT COSTS. THE FRONT TIRES ARE ON THE SECOND SET AND THE CURRENT VEHICLE MILEAGE IS 42K. I HAVE ATTACHED IMAGES OF FRONT DRIVER SIDE TIRE WHICH HAS GREATEST WEAR AND IMAGE 20180328_113012.JPG IS THE ORIGINAL BACK TIRES WHICH HAVE NO WEAR. FRONT ARE THE SECOND SET SINCE PURCHASING VEHICLE. ORIGINAL SET WAS COMPLETELY BALD ON OUTSIDE EDGE BEFORE 19K MILES.

• Electronic Stability Control (esc)1

  • Filed May 2017

    THIS VEHICLE HAS HAD NUMEROUS ELECTRICAL ISSUE FROM THE FIRST FEW MONTHS OF OWNERSHIP. THE TRAILER BRAKE SYSTEM FAILED AND WAS REPLACED ON OCTOBER 2014. THE VEHICLE HAS HAD MANY RECALLS THAT HAVE BEEN CORRECTED BY OWNER AND SERVICE PROVIDER. THE SECOND SUMMER OF OWNERSHIP THE VEHICLE HAD RADIATOR ISSUES, AND MOST RECENTLY ELECTRICAL ISSUES AGAIN AND TRANSMISSION ISSUES. WHILE DRIVING THE VEHICLE ELECTRICAL DASHBOARD GOES INTO A FLICKER AND SHUTS DOWN. GMC WAS ABLE TO FIX THIS ISSUE AT THE OWNERS COST WITH THE VEHICLE BEING OUT OF SERVICE FOR 3 WEEKS. GMC WAS TO REIMBURSE THE OWNER FOR COSTS OF A GM DEALER THAT WAS NOT ABLE TO FIX THE ISSUE (PAINTER AUTOMOTIVE)(FEBRUARY 9, 2017) OF $300, THIS HAS NOT BEEN REIMBURSED. THE VEHICLE IS NOW AT THE SERVICE STATION AS IT DOES NOT START WITH NO CODES. IT HAS BEEN OUT OF SERVICE FOR 2 WEEKS AND COUNTING, THIS VEHICLE IS NO LONGER RELIABLE OR SAFE FOR US TO DRIVE. WE HAVE DOCUMENTATION OF ALL THE ISSUES AND VIDEO OF THE DASHBOARD FLICKER.

• Tires1

  • Filed Apr 2016

    TL- THE CONTACT OWN GMC 3500 FOREST RIVER THUNDER XLR THUNDER BOLT. THE CONTACT WAS DRIVE THE VEHICLE ON THE INTERSTSE SOMEONE PULL ALONG SIDE OF HIS VEHICLE . THE CONTACT PULL OVER. THE REAR PASSENGER TIRE WAS SHRED.

• Traction Control System1

  • Filed Jan 2016

    TL* THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT THE TRACTION CONTROL MONITOR LIGHT REMAINED ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS 363.

Safety ratings

NHTSA 5-Star Safety Ratings from government crash tests. Ratings can differ by cab style and 2WD/4WD.

NHTSA hasn't published star ratings for this truck. Many heavy-duty pickups aren't included in NHTSA's crash-test program, so this doesn't mean the truck is unsafe.