2012 GMC Sierra 3500HD

What owners should know

Covers 2011–2014 · 6.6L Duramax LML diesel 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 2012 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.

• Duramax LML 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

• DEF heater and NOx sensor problems

  Moderate DIY

  Signs: 'Poor DEF quality' or reduced power messages, check engine light.

  Fix: Scan for codes. Common fixes are a NOx sensor or the DEF heater and tank assembly.

  Shop: Duramax NOx sensorShop: Duramax DEF heater▶ How-to videos

• Worn idler arm and pitman arm

  Moderate DIY

  Signs: Loose, wandering steering, clunks, play in the steering wheel.

  Fix: Replace the idler arm and pitman arm, and check tie rods. Many owners add an idler arm support brace. Get an alignment afterward.

  Shop: idler armShop: pitman armShop: idler arm support kit▶ How-to videos

• Cracked dashboard

  Easy DIY

  Signs: Cracks across the dash top, especially near the passenger airbag.

  Fix: Cover it with a molded dash cover or replace the dash pad. Make sure a cover doesn't block the airbag.

  Shop: dash cover▶ 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:Frontal:Passenger Side:Inflator Module

  Feb 2021 · #21V054000

  General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA, MS, SC, TX, PR, AS, GU, the MP, and VI or "Zone A." Additionally GM is recalling certain 2011-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, Yukon XL and 2011-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AZ, AR, DE, DC, IL, IN, KS, KY, MD, MO, NE, NV, NJ, NM, NC, OH, OK, PA, TN, VA, and WV or "Zone B." Additionally, GM is recalling certain 2010-2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL and 2010-2013 Cadillac Escalade EXT, Chevrolet Avalanche, Silverado 1500, and GMC Sierra 1500 vehicles originally sold, or ever registered, in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MT, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI, and WY or "Zone C." These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

  Risk and fix

  Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.

  Fix: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 25, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed to 40 VIN owners on May 11, 2021. A second owner notification letter was mailed to all other owners on January 24, 2022. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328800.

• Air Bags:Frontal:Passenger Side:Inflator Module

  Feb 2021 · #21V051000

  General Motors, LLC (GM) is recalling certain 2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." These vehicles are equipped with non-desiccated passenger frontal inflators containing phase-stabilized ammonium nitrate (PSAN) propellant. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

  Risk and fix

  Risk: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.

  Fix: GM will notify owners, and dealers will replace the front passenger air bag inflator with an alternate one, free of charge. Interim letters notifying owners of the safety risk were mailed on February 22, 2021. Second notification letters will be mailed once the remedy is available. Owner notification letters were mailed on May 11, 2021. Owners may contact Cadillac customer service at 1-800-458-8006; Chevrolet customer service at 1-800-222-1020; and GMC customer service at 1-800-462-8782. GM's number for this recall is N212328770.

• Equipment

  Apr 2018 · #18V267000

  General Motors LLC (GM) is recalling certain 2009-2014 Chevrolet Silverado HD and GMC Sierra HD, 2009 GMC Topkick 5000, 6000, 7000 and 8000 Series and Isuzu F Series, and 2009-2018 Chevrolet Express, and GMC Savana vehicles, equipped with certain Plastic-Handle Fire Extinguishers or Push Button 'Pindicator' Fire Extinguishers. These extinguishers may become clogged, preventing the extinguisher from discharging as expected or requiring excessive force to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17E062-5427.pdf

  Risk and fix

  Risk: In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.

  Fix: GM will notify owners, instructing them to contact Kidde to get a replacement fire extinguisher, free of charge. The recall began June 11, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020, GMC customer service at 1-800-462-8782, and Isuzu customer service at 1-866-441-9638. GM's number for this recall is 18146.

• 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.

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.

• Electrical System9

  1 involved a crash · 1 involved a fire

  • Filed Mar 2022

    The service brakes lights has come on a d disabled my brake controller. This is a safety issue while towing and completely unacceptable.

  • Filed Mar 2016

    TL* THE CONTACT OWNS A 2012 GMC SIERRA 1500. THE CONTACT STATED THAT THE DASHBOARD NEAR THE PASSENGER SIDE AIR BAG WAS FRACTURED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE DASHBOARD NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 22,000.

  • Filed Dec 2015

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED A LOSS OF POWER WHICH RESULTED IN A FRONT END COLLISION WITH A GUARDRAIL. WHEN THE FAILURE OCCURRED, ALL THE WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS ABLE TO BE OPERATED AFTER THE CRASH. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC TO BE DIAGNOSED OR REPAIRED. A POLICE REPORT WAS FILED. THERE WERE NO INJURIES. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 75,000.

  • Filed Aug 2015

    WHILE MOVING WITH TRANSMISSION IN DRIVE, THE IGNITION SWITCH CAN BE SWITCHED OFF. BY DOING SO, THE POWER STEERING AND BRAKES FAIL TO FUNCTION PROPERLY. THE STEERING WHEEL WILL LOCK, NOT ALLOWING TO STEER. THERE HAVE BEEN A SAFETY CONCERNS WITH OTHER GM PRODUCTS, WHY NOT THIS MODEL? THIS IS A SAFETY CONCERN.

  • Filed Jul 2015

    CHECK ENGINE LIGHT ILLUMINATED. TOOK TRUCK TO LOCAL CHEVROLET DEALER FOR REPAIR AND THEY DISCOVERED THE WIRES HAD BEEN CHEWED THROUGH. I READ THAT GM USES PEANUT OIL ON WIRES IN ORDER TO INSTALL THEM EASIER. LOOKS LIKE THIS ATTRACTED A MOUSE, SQUIRREL, CHIPMUNK, OR OTHER CREATURE AND IT CHEWED THE WIRES. LUCKILY IT DID NOT AFFECT THE OPERATION OF THE TRUCK BUT IT COULD HAVE LED TO A SHORT CIRCUIT THAT COULD HAVE CAUSED A FIRE. I FEEL THIS NEEDS TO BE THOROUGHLY INVESTIGATED. AND GM NEEDS TO CREATE SOME KIND OF ANIMAL REPELLANT TO SPRAY ON THE WIRES AFTER VEHICLE ASSEMBLY.

  • Showing the 5 most recent of 9.
• Engine8

  2 involved a fire

  • Filed Feb 2015

    THE FUEL INJECTION PUMP CP4 HAD A CATASTROPHIC FAILURE AS I WAS DRIVING ON A HEAVILY TRAVELED FOUR LANE HIGHWAY, US RT.20. I LOST POWER STEERING AND BRAKES. I FELT FORTUNATE THAT I WAS NOT TOWING A 16,000 LB. FIFTH WHEEL CAMPER DOWN A MOUNTAIN ROAD.I SAY THIS BECAUSE IT WAS EXTREMELY DIFFICULT TO MAINTAIN CONTROL OVER THE TRUCK STEERING IT AND BRINGING IT TO A CONTROLLED STOP. I HAVE READ ABOUT THESE PUMPS FAILING ON NUMEROUS DIESEL FORD AND GM TRUCKS. I ALSO FEEL IF A WOMAN OR SMALL PERSON HAD THIS HAPPEN TO THEM THE OUTCOME COULD END IN LOSS OF CONTROL RESULTING IN INJURIES EVEN DEATHS. THE ONLY ONE THAT KNOWS THE ACTUAL NUMBER OF PUMPS THAT HAVE FAILED IS THE MANUFACTURERS, WHO WILL NOT SHARE THAT INFORMATION WILLINGLY. *JS

  • Filed Dec 2014

    ENGINE WILL INCREASE IDLE FROM 700 TO 900 AT ANY TIME. ONE CAN BE SITTING AT A TRAFFIC LIGHT AND IT MIGHT INCREASE OR DECREASE. I PULL A 5TH WHEEL (35 FEET) AND IT IS VERY DIFFICULT TO STOP WITH THE ENGINE TRYING TO KEEP GOING. ALSO IT IS VERY SCARY TO STOP ON SLIPPERY ROADS. THIS DID NOT START UNTIL THE VEHICLE HAD APPROX. 35,000 MILES ON IT. THE DEALER TELLS ME IT IS NORMAL, BUT I HAVE TALKED TO OWNERS OF THE GM DIESEL FROM MODEL YEAR 2008 THROUGH 2015 AND NONE OF THEM HAVE THIS CONDITION. *TR

  • Filed Mar 2014

    WHILE THE VEHICLE WAS BEING DRIVEN, IT JUST WENT DEAD, NO ENGINE, NO ELECTRIC, NO NOTHING. THE VEHICLE WAS LEFT IN PLACE AND AT SOME POINT, CAUGHT FIRE AND BURNED. A TOTAL LOSS. TO DATE, THE INSURANCE COMPANY HAS NOT PAID ME FOR MY LOSS BUT RATHER HAS GONE TO GREAT LENGTHS TO INVESTIGATE ME PERSONALLY, LOOKING FOR ANY REASON TO NOT PAY. SO, I'VE BEEN MAKING TWO VEHICLE PAYMENTS FOR THE LAST 8 MONTHS. AS A RESULT, I AM STRUGGLING FINANCIALLY. *TR

  • Filed Jul 2013

    WHILE PULLING MY FIFTH WHEEL TRAILER 12500# AT HIGHWAY SPEED 65 MPH PULLING A GRADE THE CHECK ENGINE LIGHT CAME ON AND THE REDUCED ENGINE POWER MESSAGE APPEARED ON THE DASH. THIS REDUCED AND LIMITED THE SPEED TO 50 MPH AND STEPS THE TRUCK DOWN FROM THERE UNTIL YOU CAN ONLY DO 20 MPH ON THE INTERSTATE. THIS ISSUE HAS HAPPENED THREE TIMES IN THREE MONTHS. *TR

  • Filed Jun 2013

    THIS STARTED JUST A FEW WEEKS AFTER I PURCHASED THE TRUCK, STILL UNDER WARRANTY. IT HAS BEEN IN THE SHOP TWICE FOR THIS. IT HAS HAPPENED 3 TIMES. WHILE DRIVING THE TRUCK WILL SHUT OFF LIKE YOU TURNED THE KEY OFF. VERY DANGEROUS WHEN DRIVING IN TRAFFIC. HAS BEEN IN SHOP TWICE FOR THIS PROBLEM, GMC HAS FAILED TO FIND OR FIX THE PROBLEM. I TOLD THEM THAT I WOULD NOT PUT MY FAMILY BACK INTO A TRUCK THAT HAS THE POSSIBILITY OF CAUSING A WRECK AND GETTING THEM HURT. FILED A CLAIM [XXX] WITH GMC CUSTOMER SERVICE, TRYING TO GET SOME HELP. NOTHING HAPPENED. THE GMC SERVICE CENTER TOLD ME THAT THEY COULD NOT FIND OR FIX THE PROBLEM, AND THAT I NEEDED TO PICK UP MY TRUCK. I TOLD THEM THAT IF THEY COULD NOT FIND OR FIX THE PROBLEM, I WOULD NOT PUT MY FAMILY BACK INTO AN UNSAFE TRUCK THAT COULD POSSIBLY GET THEM HURT OR KILLED. I TRIED TO HAVE SOMEONE FROM GMC UPPER MANAGEMENT CONTACT ME SO WE COULD COME UP WITH A SOLUTION. BUT NO ONE FROM MANAGEMENT WOULD CONTACT ME. SO I ENDED UP HAVING TO TRADE THIS TRUCK IN FOR A NEW ONE, WHICH COST ME MONEY OUT OF MY POCKET, HIGHER PAYMENTS, LONGER TERMS ETC. DON'T THINK IT WAS RIGHT THAT GMC WOULD NOT STAND BEHIND THERE PRODUCT. WHY IS IT THAT GMC DID NOT HAVE TO DO ANYTHING ABOUT A SAFETY ITEM THAT THEY COULD NOT FIX ? I WAS NOT ASKING FOR MONEY OR ANYTHING LIKE THAT, JUST SWAP IT OUT EVEN FOR A SAFE TRUCK THAT I COULD PUT MY FAMILY IN WITHOUT FEAR OF THEM GETTING HURT. BUT INSTEAD, GMC DECIDED TO FORGET ABOUT THE PROBLEM, AND IT ENDED UP COSTING ME AND MY FAMILY MONEY THAT COULD HAVE BEEN USED FOR OTHER THINGS LIKE FOOD, BILLS, MEDICAL ETC. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

  • Showing the 5 most recent of 8.
• Structure6

  2 involved a fire

  • Filed Jan 2016

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT THE DASHBOARD NEAR THE PASSENGER SIDE AIR BAG WAS FRACTURED. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE DASHBOARD NEEDED TO BE REPLACED. THE CONTACT INFORMED THE MANUFACTURER OF THE FAILURE. THE MANUFACTURER STATED THAT THE DASHBOARD WOULD BE ABLE TO BE REPLACED AT A DISCOUNTED PRICE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 67,000. UPDATED 09/28/16*LJ *TR

  • Filed Sep 2015

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT THE PASSENGER SIDE DASHBOARD WAS CRACKED ABOVE THE AIR BAG HOUSING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE DASHBOARD NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 57,000.

  • Filed Aug 2015

    FRAME COATING IS PEELING OFF THE BACK OF THE FRAME AND IN OTHER AREAS. EXCESSIVE RUST FOR A VEHICLE THAT IS 3 YEARS OLD IN A TEMPERATE CLIMATE. ONLY APPEARS TO BE AFFECTING FRAME COVERED WITH WAXY UNDERCOAT. VERY LITTLE RUST AND NO PEELING ON AREAS THAT HAVE OTHER PAINTS/COATINGS.

  • Filed Mar 2014

    WHILE THE VEHICLE WAS BEING DRIVEN, IT JUST WENT DEAD, NO ENGINE, NO ELECTRIC, NO NOTHING. THE VEHICLE WAS LEFT IN PLACE AND AT SOME POINT, CAUGHT FIRE AND BURNED. A TOTAL LOSS. TO DATE, THE INSURANCE COMPANY HAS NOT PAID ME FOR MY LOSS BUT RATHER HAS GONE TO GREAT LENGTHS TO INVESTIGATE ME PERSONALLY, LOOKING FOR ANY REASON TO NOT PAY. SO, I'VE BEEN MAKING TWO VEHICLE PAYMENTS FOR THE LAST 8 MONTHS. AS A RESULT, I AM STRUGGLING FINANCIALLY. *TR

  • Filed Jan 2013

    APPARENTLY GM USES PEANUT OIL TO LUBRICATE WIRING SO THEY CAN MORE EASILY INSULATE, ETC (ACCORGING TO THE GM DEALER). THIS ATTRACTS RATS AND MICE WHICH CHEW UP THE WIRING - POTENTIALLY IMPACTING SENSORS AND OTHER ITEMS CONTROLLING CRUISE, STABILITY/TRACTION CONTROL, AND ANY NUMBER OF ELECTRICAL SYSTEMS THAT THE DRIVER MAY BE RELYING UPON FOR SAFETY. I ACTUALLY HAD MAP SENSOR WIRES CHEWED UP THAT DISABLED MY STABILITY/TRACTION SYSTEMS AND INHIBITED ENGINE PERFORMANCE. LUCKILY FOR ME IT HAPPENED IN MY DRIVEWAY RATHER THAN ON THE HIGHWAY. DEALER CLAIMS IT IS NOT WARRANTY ITEM EVEN THOUGH CAUSED BY A PROCESS THAT GM ELECTS TO USE IN BUILDING THE VEHICLE. THIS COULD IMPACT ANY/EVERY VEHICLE THAT GM BUILDS WITH USE OF PEANUT OIL (MAY INDEED BE ALL OF THEIR MODELS). *TR

  • Showing the 5 most recent of 6.
• Air Bags5

  1 involved a crash

  • Filed Jan 2026

    Our Dash board cracked very badly from the top next to the speaker to the passenger side air bag. We purposely use a dash board cover and never place heavy things on it. This is a safety issue as if getting in an accident wouldn’t be bad enough flying shrapnel would be worse. We just had it fixed at a dealership to the tune of $2500. This is not okay as I see this is a constant problem.

  • Filed Jun 2021

    2012 GMC SIERRA. CONSUMER WRITES IN REGARDS TO PASSENGER SIDE AIRBAG SAFETY RECALL. THE CONSUMER STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME COMPLETING THE RECALL REPAIR.

  • Filed Nov 2015

    DASH CRACKED AROUND AIRBAG MODULE

  • Filed Oct 2015

    THE DASH THAT SUPPORTS THE AIR BAG ON THE PASSENGER SIDE IS CRACKING AND COULD POSSIBLY PUNCTURE THE AIR BAG OR SEND PARTS OF THE DASH FLYING A OCCUPANTS DURING A COLLISION. BECAUSE OF THE CRACKS THE AIR BAG IS NOT PROPERLY SECURED IN THE VEHICLE.

  • Filed Mar 2013

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT WHILE MAKING A RIGHT TURN, THE DRIVER FRONT AIR BAG ERRONEOUSLY DEPLOYED AND CAUSED THE CONTACT TO CRASH INTO A POLE. THE VEHICLE WAS DESTROYED BUT THERE WERE NO INJURIES. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 6,700. THE VIN WAS UNAVAILABLE.

• Unknown or Other5

  • Filed Jan 2026

    Our Dash board cracked very badly from the top next to the speaker to the passenger side air bag. We purposely use a dash board cover and never place heavy things on it. This is a safety issue as if getting in an accident wouldn’t be bad enough flying shrapnel would be worse. We just had it fixed at a dealership to the tune of $2500. This is not okay as I see this is a constant problem.

  • Filed Oct 2017

    THE GMC SIERRA 3500HD WHILE IN REGENERATION MODE FUNNELS EXHAUST DIRECTLY INTO THE CAB THROUGH THE VENTS. WHILE GM RECOGNIZED THIS AS A FLAW AND CAME UP WITH A FIX FOR IT, THEY WILL ONLY REPAIR IT IN A 5 YEAR OR 100,000 MILE WINDOW. HOW IS THIS NOT A SAFETY ISSUE WITHOUT AN EXPIRATION?

  • Filed Mar 2016

    DASHBOARD IS CRACKED NEAR THE PASSENGER SIDE AIRBAG CLOSE TO THE WINDSHIELD. VEHICLE HAS NEVER BEEN IN AN ACCIDENT OR HAD THE AIRBAGS DEPLOYED. CRACK OCCURRED JUST BEFORE 50,000 MILES.

  • Filed Mar 2016

    DASHBOARD CRACKING ABOVE INSTRUMENT PANEL.

  • Filed Nov 2015

    DASH IS CRACKING AROUND MY PASSENGER AIRBAG. THE CRACK IS IN FRONT OF THE PASSENGER AIRBAG CLOSER TO THE WINDSHIELD. VEHICLE ONLY HAS 32,000 MILES BUT IS JUST OUT OF THE 3 YEAR BUMPER TO BUMPER WARRANTY.

• Service Brakes5

  2 involved a crash

  • Filed Mar 2022

    The service brakes lights has come on a d disabled my brake controller. This is a safety issue while towing and completely unacceptable.

  • Filed Sep 2015

    I PURCHASED A 2012 GMC SIERRA DENALI FROM STAHL MOTORS IN MONTEREY, CA IN FEBRUARY OF 2015. THEY ARE NOT WILLING TO PAY FOR THE DAMAGES TO MY TRUCK EVEN THOUGH THEY SOLD ME A COMPLETELY DANGEROUS VEHICLE, WHICH I WILL EXPLAIN. MY TRUCK DIDN'T FEEL RIGHT AS I WAS DRIVING SO I DECIDED TO TAKE IT TO A SHOP TO GET LOOKED AT. THERE IS A LONG LIST OF THINGS THAT IS WRONG WITH THE VEHICLE, BUT I WILL MENTION JUST THE MAIN ONES. THE TRUCK WAS SOLD TO ME WITHOUT THE REAR BRAKES HOOKED UP. THE BRAKE LINES FOR THE REAR CALIPERS WERE CAPPED OFF BY THE REAR DIFFERENTIAL. WHEN THE MECHANIC SHOP DISCOVERED THAT, THEY ALSO DISCOVERED THE MASTER CYLINDER WAS COMPLETELY DRY, WHICH CAUSED DAMAGE TO MY FRONT BRAKES. THERE WAS NO CROSS MEMBER UNDERNEATH THE VEHICLE FROM FRAME TO FRAME. IT WAS TORCHED OUT, THEREFOR LEAVING ZERO SUPPORT FOR THE FRAME OF THE TRUCK AS WELL AS THE FRONT DIFFERENTIAL. WHICH NEEDED TO BE REBUILT CAUSED FROM EXCESSIVE MOVEMENT LEFT TO RIGHT. FRONT DIFFERENTIAL NEEDED TO BE REBUILT CAUSED FROM THE DAMAGE OF NO CROSS MEMBER IN PLACE. BALL JOINTS WERE ALSO AFFECTED (ABOUT TO POP OUT OF CONTROL ARMS) DUE TO WRONG PARTS INSTALLED IN FRONT SUSPENSION OF VEHICLE.

  • Filed Feb 2015

    THE FUEL INJECTION PUMP CP4 HAD A CATASTROPHIC FAILURE AS I WAS DRIVING ON A HEAVILY TRAVELED FOUR LANE HIGHWAY, US RT.20. I LOST POWER STEERING AND BRAKES. I FELT FORTUNATE THAT I WAS NOT TOWING A 16,000 LB. FIFTH WHEEL CAMPER DOWN A MOUNTAIN ROAD.I SAY THIS BECAUSE IT WAS EXTREMELY DIFFICULT TO MAINTAIN CONTROL OVER THE TRUCK STEERING IT AND BRINGING IT TO A CONTROLLED STOP. I HAVE READ ABOUT THESE PUMPS FAILING ON NUMEROUS DIESEL FORD AND GM TRUCKS. I ALSO FEEL IF A WOMAN OR SMALL PERSON HAD THIS HAPPEN TO THEM THE OUTCOME COULD END IN LOSS OF CONTROL RESULTING IN INJURIES EVEN DEATHS. THE ONLY ONE THAT KNOWS THE ACTUAL NUMBER OF PUMPS THAT HAVE FAILED IS THE MANUFACTURERS, WHO WILL NOT SHARE THAT INFORMATION WILLINGLY. *JS

  • Filed Jul 2014

    PULLING INTO A PARKING SPOT IN A PARKING GARAGE GOING NO MORE THAN 3 MILES PER HOUR, OR HOWEVER FAST THIS VEHICLE CAN GO WHILE FOOT IS RESTING ON BRAKE, GETTING READY TO FULLY BRAKE. AS I PRESSED DOWN ON BRAKE TO STOP, THE VEHICLE CONTINUED AS IF THE ANTI-LOCK BRAKE SYSTEM SLIPPED, CAUSING THE TRUCK TO DRIVE FORWARD CRASHING THROUGH THE SHEETROCK WALL AND FINALLY STOPPING AFTER HITTING THE GLASS WINDOWS. TWO WEEKS LATER, AFTER ALL COSMETIC REPAIRS WERE DONE, THE VEHICLE DID THE SAME THING IN ANOTHER PARKING LOT, BUT LUCKILY BROKE BEFORE HITTING THE CURB AND LIGHT POST. I DID FEEL UNDER MY FOOT ON THE BRAKE PEDDLE, AS I PRESSED DOWN TO STOP, A SLIP OF SOME SORT WHICH AT THE SAME TIME CAUSED THE VEHICLE TO PUSH FORWARD RIGHT BEFORE STOPPING. THIS IS DEFINITELY A MALFUNCTION OF SOME SORT WITH THE ANTI-LOCK BRAKE SYSTEM. *TR

  • Filed Mar 2012

    JUST PURCHASES NEW 2012 GMC SIERRA 3500 , 400 MILES , HAVE HAD ALIGNMENT / STEERING PROBLEMS WITH A DRIFT TO LEFT AND A WONDERING STEERING WHEEL, ALSO BRAKE AND ABS LIGHTS ON, WENT TO DEALER THEY LOOKED AT IT FOR 2 HRS, AND SAID IT NEEDED A PART ORDERED AND THERE WAS A TSB ON IT, THE TECH SAID IT WOULD BE SAFE TO DRIVE BUT I WOULD NOT HAVE ABS BRAKES, ALSO HE WOULD CHECK ALIGNMENT AGAIN AT TIME WHEN PART CAME IN 4 DAYS EST, BRAKE AND ABS LIGHT REMAINED ON, VEHICLE DROVE FINE THE NEXT DAY UNTIL A ACCIDENT, WENT AROUND CURVEAT 55 MPH, APPLIED BRAKES TO SLOW, BRAKES WENT TO FLOOR UN ABLE TO SLOW AT ALL WENT OFF THE ROAD LOST CONTROL AND CRASHED INTO TREES, BOTH AIRBAGS DEPLOYED , WENT TO EMERGENCY ROOM WITH ARM INJURY AND RIB INJURIES, BRAND NEW TRUCK VERY SCARRY I WILL NEVER BUY A GM PODUCT AGAIN. *TR

• Power Train5

  • Filed Feb 2017

    THE VEHICLE WILL NOT SHIFT PROPERLY WHEN TOWING A TRAILER. WHILE GOING UP A HILL, THE TRANSMISSION WILL NOT DOWNSHIFT PROPERLY. WHILE GOING DOWNHILL, THE VEHICLE DOWNSHIFTS TO 2ND GEAR WHILE GOING 60 MPH. I HAVE CONTACTED GM SEVERAL TIMES (THEY HAVE IT ON FILE) THAT THERE IS A PROBLEM WITH THE TRANSMISSION. THEY UNDERSTAND BUT SAID THAT THEY CANNOT DO ANYTHING ABOUT IT. THIS HAS BEEN HAPPENING SINCE IT WAS BRAND NEW. OVER AND OVER AGAIN.

  • Filed Apr 2016

    WHILE DRIVING AT NORMAL HIGHWAY SPEED, TRUCK SHUT OFF EXCEPT FOR THE LIGHTS. LOST POWERS STEERING, BRAKES ETC. ONCE I GOT THE TRUCK PULLED OVER AND STOPPED, ATTEMPTED TO RESTART. WAS UNABLE TO DO SO UNTIL THE 4TH ATTEMPT DURING A 5 MINUTES TIME SPAN. ONCE STARTED, APPEARED TO BE RUNNING FINE EXCEPT FOR THE MIL ON THE DASHBOARD WHICH WAS LIT.

  • Filed Sep 2015

    I PURCHASED A 2012 GMC SIERRA DENALI FROM STAHL MOTORS IN MONTEREY, CA IN FEBRUARY OF 2015. THEY ARE NOT WILLING TO PAY FOR THE DAMAGES TO MY TRUCK EVEN THOUGH THEY SOLD ME A COMPLETELY DANGEROUS VEHICLE, WHICH I WILL EXPLAIN. MY TRUCK DIDN'T FEEL RIGHT AS I WAS DRIVING SO I DECIDED TO TAKE IT TO A SHOP TO GET LOOKED AT. THERE IS A LONG LIST OF THINGS THAT IS WRONG WITH THE VEHICLE, BUT I WILL MENTION JUST THE MAIN ONES. THE TRUCK WAS SOLD TO ME WITHOUT THE REAR BRAKES HOOKED UP. THE BRAKE LINES FOR THE REAR CALIPERS WERE CAPPED OFF BY THE REAR DIFFERENTIAL. WHEN THE MECHANIC SHOP DISCOVERED THAT, THEY ALSO DISCOVERED THE MASTER CYLINDER WAS COMPLETELY DRY, WHICH CAUSED DAMAGE TO MY FRONT BRAKES. THERE WAS NO CROSS MEMBER UNDERNEATH THE VEHICLE FROM FRAME TO FRAME. IT WAS TORCHED OUT, THEREFOR LEAVING ZERO SUPPORT FOR THE FRAME OF THE TRUCK AS WELL AS THE FRONT DIFFERENTIAL. WHICH NEEDED TO BE REBUILT CAUSED FROM EXCESSIVE MOVEMENT LEFT TO RIGHT. FRONT DIFFERENTIAL NEEDED TO BE REBUILT CAUSED FROM THE DAMAGE OF NO CROSS MEMBER IN PLACE. BALL JOINTS WERE ALSO AFFECTED (ABOUT TO POP OUT OF CONTROL ARMS) DUE TO WRONG PARTS INSTALLED IN FRONT SUSPENSION OF VEHICLE.

  • Filed Feb 2015

    WHILE DRIVING ON HIGHWAY, TRANSMISSION SHIFTS HARD TO HIGHER GEAR. THIS STARTED ALL OF A SUDDEN WILL TAKE TO DEALERSHIP. *JS

  • Filed Jul 2013

    WHILE PULLING MY FIFTH WHEEL TRAILER 12500# AT HIGHWAY SPEED 65 MPH PULLING A GRADE THE CHECK ENGINE LIGHT CAME ON AND THE REDUCED ENGINE POWER MESSAGE APPEARED ON THE DASH. THIS REDUCED AND LIMITED THE SPEED TO 50 MPH AND STEPS THE TRUCK DOWN FROM THERE UNTIL YOU CAN ONLY DO 20 MPH ON THE INTERSTATE. THIS ISSUE HAS HAPPENED THREE TIMES IN THREE MONTHS. *TR

• Steering3

  1 involved a crash

  • Filed Feb 2015

    THE FUEL INJECTION PUMP CP4 HAD A CATASTROPHIC FAILURE AS I WAS DRIVING ON A HEAVILY TRAVELED FOUR LANE HIGHWAY, US RT.20. I LOST POWER STEERING AND BRAKES. I FELT FORTUNATE THAT I WAS NOT TOWING A 16,000 LB. FIFTH WHEEL CAMPER DOWN A MOUNTAIN ROAD.I SAY THIS BECAUSE IT WAS EXTREMELY DIFFICULT TO MAINTAIN CONTROL OVER THE TRUCK STEERING IT AND BRINGING IT TO A CONTROLLED STOP. I HAVE READ ABOUT THESE PUMPS FAILING ON NUMEROUS DIESEL FORD AND GM TRUCKS. I ALSO FEEL IF A WOMAN OR SMALL PERSON HAD THIS HAPPEN TO THEM THE OUTCOME COULD END IN LOSS OF CONTROL RESULTING IN INJURIES EVEN DEATHS. THE ONLY ONE THAT KNOWS THE ACTUAL NUMBER OF PUMPS THAT HAVE FAILED IS THE MANUFACTURERS, WHO WILL NOT SHARE THAT INFORMATION WILLINGLY. *JS

  • Filed Jul 2014

    TL* THE CONTACT OWNS A 2012 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 55 MPH, THE RIGHT AND LEFT TURN SIGNAL AND SAFETY BELT CHIME STOPPED WORKING. ALSO, THE RADIO MALFUNCTIONED AND THE VEHICLE VEERED TO THE RIGHT. THE MANUFACTURER WAS NOT CONTACTED AND THE VEHICLE WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 65,274. UPDATED 10/2/14*CN THE CONSUMER STATED THAT THE INTERIOR LIGHTS ALSO WENT OUT. THE VEHICLE WAS REPAIRED UNDER RECALL. UPDATED 3/9/15 *JS

  • Filed Mar 2012

    JUST PURCHASES NEW 2012 GMC SIERRA 3500 , 400 MILES , HAVE HAD ALIGNMENT / STEERING PROBLEMS WITH A DRIFT TO LEFT AND A WONDERING STEERING WHEEL, ALSO BRAKE AND ABS LIGHTS ON, WENT TO DEALER THEY LOOKED AT IT FOR 2 HRS, AND SAID IT NEEDED A PART ORDERED AND THERE WAS A TSB ON IT, THE TECH SAID IT WOULD BE SAFE TO DRIVE BUT I WOULD NOT HAVE ABS BRAKES, ALSO HE WOULD CHECK ALIGNMENT AGAIN AT TIME WHEN PART CAME IN 4 DAYS EST, BRAKE AND ABS LIGHT REMAINED ON, VEHICLE DROVE FINE THE NEXT DAY UNTIL A ACCIDENT, WENT AROUND CURVEAT 55 MPH, APPLIED BRAKES TO SLOW, BRAKES WENT TO FLOOR UN ABLE TO SLOW AT ALL WENT OFF THE ROAD LOST CONTROL AND CRASHED INTO TREES, BOTH AIRBAGS DEPLOYED , WENT TO EMERGENCY ROOM WITH ARM INJURY AND RIB INJURIES, BRAND NEW TRUCK VERY SCARRY I WILL NEVER BUY A GM PODUCT AGAIN. *TR

• Suspension2

  1 involved a crash

  • Filed Sep 2015

    I PURCHASED A 2012 GMC SIERRA DENALI FROM STAHL MOTORS IN MONTEREY, CA IN FEBRUARY OF 2015. THEY ARE NOT WILLING TO PAY FOR THE DAMAGES TO MY TRUCK EVEN THOUGH THEY SOLD ME A COMPLETELY DANGEROUS VEHICLE, WHICH I WILL EXPLAIN. MY TRUCK DIDN'T FEEL RIGHT AS I WAS DRIVING SO I DECIDED TO TAKE IT TO A SHOP TO GET LOOKED AT. THERE IS A LONG LIST OF THINGS THAT IS WRONG WITH THE VEHICLE, BUT I WILL MENTION JUST THE MAIN ONES. THE TRUCK WAS SOLD TO ME WITHOUT THE REAR BRAKES HOOKED UP. THE BRAKE LINES FOR THE REAR CALIPERS WERE CAPPED OFF BY THE REAR DIFFERENTIAL. WHEN THE MECHANIC SHOP DISCOVERED THAT, THEY ALSO DISCOVERED THE MASTER CYLINDER WAS COMPLETELY DRY, WHICH CAUSED DAMAGE TO MY FRONT BRAKES. THERE WAS NO CROSS MEMBER UNDERNEATH THE VEHICLE FROM FRAME TO FRAME. IT WAS TORCHED OUT, THEREFOR LEAVING ZERO SUPPORT FOR THE FRAME OF THE TRUCK AS WELL AS THE FRONT DIFFERENTIAL. WHICH NEEDED TO BE REBUILT CAUSED FROM EXCESSIVE MOVEMENT LEFT TO RIGHT. FRONT DIFFERENTIAL NEEDED TO BE REBUILT CAUSED FROM THE DAMAGE OF NO CROSS MEMBER IN PLACE. BALL JOINTS WERE ALSO AFFECTED (ABOUT TO POP OUT OF CONTROL ARMS) DUE TO WRONG PARTS INSTALLED IN FRONT SUSPENSION OF VEHICLE.

  • Filed Mar 2012

    JUST PURCHASES NEW 2012 GMC SIERRA 3500 , 400 MILES , HAVE HAD ALIGNMENT / STEERING PROBLEMS WITH A DRIFT TO LEFT AND A WONDERING STEERING WHEEL, ALSO BRAKE AND ABS LIGHTS ON, WENT TO DEALER THEY LOOKED AT IT FOR 2 HRS, AND SAID IT NEEDED A PART ORDERED AND THERE WAS A TSB ON IT, THE TECH SAID IT WOULD BE SAFE TO DRIVE BUT I WOULD NOT HAVE ABS BRAKES, ALSO HE WOULD CHECK ALIGNMENT AGAIN AT TIME WHEN PART CAME IN 4 DAYS EST, BRAKE AND ABS LIGHT REMAINED ON, VEHICLE DROVE FINE THE NEXT DAY UNTIL A ACCIDENT, WENT AROUND CURVEAT 55 MPH, APPLIED BRAKES TO SLOW, BRAKES WENT TO FLOOR UN ABLE TO SLOW AT ALL WENT OFF THE ROAD LOST CONTROL AND CRASHED INTO TREES, BOTH AIRBAGS DEPLOYED , WENT TO EMERGENCY ROOM WITH ARM INJURY AND RIB INJURIES, BRAND NEW TRUCK VERY SCARRY I WILL NEVER BUY A GM PODUCT AGAIN. *TR

• Electronic Stability Control (esc)2

  1 involved a crash

  • Filed Jul 2014

    PULLING INTO A PARKING SPOT IN A PARKING GARAGE GOING NO MORE THAN 3 MILES PER HOUR, OR HOWEVER FAST THIS VEHICLE CAN GO WHILE FOOT IS RESTING ON BRAKE, GETTING READY TO FULLY BRAKE. AS I PRESSED DOWN ON BRAKE TO STOP, THE VEHICLE CONTINUED AS IF THE ANTI-LOCK BRAKE SYSTEM SLIPPED, CAUSING THE TRUCK TO DRIVE FORWARD CRASHING THROUGH THE SHEETROCK WALL AND FINALLY STOPPING AFTER HITTING THE GLASS WINDOWS. TWO WEEKS LATER, AFTER ALL COSMETIC REPAIRS WERE DONE, THE VEHICLE DID THE SAME THING IN ANOTHER PARKING LOT, BUT LUCKILY BROKE BEFORE HITTING THE CURB AND LIGHT POST. I DID FEEL UNDER MY FOOT ON THE BRAKE PEDDLE, AS I PRESSED DOWN TO STOP, A SLIP OF SOME SORT WHICH AT THE SAME TIME CAUSED THE VEHICLE TO PUSH FORWARD RIGHT BEFORE STOPPING. THIS IS DEFINITELY A MALFUNCTION OF SOME SORT WITH THE ANTI-LOCK BRAKE SYSTEM. *TR

  • Filed Jan 2013

    APPARENTLY GM USES PEANUT OIL TO LUBRICATE WIRING SO THEY CAN MORE EASILY INSULATE, ETC (ACCORGING TO THE GM DEALER). THIS ATTRACTS RATS AND MICE WHICH CHEW UP THE WIRING - POTENTIALLY IMPACTING SENSORS AND OTHER ITEMS CONTROLLING CRUISE, STABILITY/TRACTION CONTROL, AND ANY NUMBER OF ELECTRICAL SYSTEMS THAT THE DRIVER MAY BE RELYING UPON FOR SAFETY. I ACTUALLY HAD MAP SENSOR WIRES CHEWED UP THAT DISABLED MY STABILITY/TRACTION SYSTEMS AND INHIBITED ENGINE PERFORMANCE. LUCKILY FOR ME IT HAPPENED IN MY DRIVEWAY RATHER THAN ON THE HIGHWAY. DEALER CLAIMS IT IS NOT WARRANTY ITEM EVEN THOUGH CAUSED BY A PROCESS THAT GM ELECTS TO USE IN BUILDING THE VEHICLE. THIS COULD IMPACT ANY/EVERY VEHICLE THAT GM BUILDS WITH USE OF PEANUT OIL (MAY INDEED BE ALL OF THEIR MODELS). *TR

• Fuel System2

  • Filed Jul 2014

    DRIVING FROM GM DEALER FOR TWO MILES CHANGE FUEL FILTER MESSAGE APPEARED AND ENGINE DIED. TOWED TO A DEALER DIAGNOSED AS A HIGH PRESSURE INJECTOR PUMP FAILURE WITH METAL CONTAMINATION TO FUEL SYSTEM. I HAVE FOUND A BULLETIN DATED 2009 FROM EQUIPMENT MANUFACTURERS. THIS JOINT STATEMENT HAS INFORMATION ABOUT THE FUEL USED IN THE USA THAT I WAS NOT AWARE OF AND MAY HAVE AVOIDED THIS FAILURE. THIS IS A VERY EXPENSIVE REPAIR AS I USE MY TRUCK FOR WORK. *TR

  • Filed Jun 2013

    THIS STARTED JUST A FEW WEEKS AFTER I PURCHASED THE TRUCK, STILL UNDER WARRANTY. IT HAS BEEN IN THE SHOP TWICE FOR THIS. IT HAS HAPPENED 3 TIMES. WHILE DRIVING THE TRUCK WILL SHUT OFF LIKE YOU TURNED THE KEY OFF. VERY DANGEROUS WHEN DRIVING IN TRAFFIC. HAS BEEN IN SHOP TWICE FOR THIS PROBLEM, GMC HAS FAILED TO FIND OR FIX THE PROBLEM. I TOLD THEM THAT I WOULD NOT PUT MY FAMILY BACK INTO A TRUCK THAT HAS THE POSSIBILITY OF CAUSING A WRECK AND GETTING THEM HURT. FILED A CLAIM [XXX] WITH GMC CUSTOMER SERVICE, TRYING TO GET SOME HELP. NOTHING HAPPENED. THE GMC SERVICE CENTER TOLD ME THAT THEY COULD NOT FIND OR FIX THE PROBLEM, AND THAT I NEEDED TO PICK UP MY TRUCK. I TOLD THEM THAT IF THEY COULD NOT FIND OR FIX THE PROBLEM, I WOULD NOT PUT MY FAMILY BACK INTO AN UNSAFE TRUCK THAT COULD POSSIBLY GET THEM HURT OR KILLED. I TRIED TO HAVE SOMEONE FROM GMC UPPER MANAGEMENT CONTACT ME SO WE COULD COME UP WITH A SOLUTION. BUT NO ONE FROM MANAGEMENT WOULD CONTACT ME. SO I ENDED UP HAVING TO TRADE THIS TRUCK IN FOR A NEW ONE, WHICH COST ME MONEY OUT OF MY POCKET, HIGHER PAYMENTS, LONGER TERMS ETC. DON'T THINK IT WAS RIGHT THAT GMC WOULD NOT STAND BEHIND THERE PRODUCT. WHY IS IT THAT GMC DID NOT HAVE TO DO ANYTHING ABOUT A SAFETY ITEM THAT THEY COULD NOT FIX ? I WAS NOT ASKING FOR MONEY OR ANYTHING LIKE THAT, JUST SWAP IT OUT EVEN FOR A SAFE TRUCK THAT I COULD PUT MY FAMILY IN WITHOUT FEAR OF THEM GETTING HURT. BUT INSTEAD, GMC DECIDED TO FORGET ABOUT THE PROBLEM, AND IT ENDED UP COSTING ME AND MY FAMILY MONEY THAT COULD HAVE BEEN USED FOR OTHER THINGS LIKE FOOD, BILLS, MEDICAL ETC. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

• Diesel2

  • Filed Jul 2014

    DRIVING FROM GM DEALER FOR TWO MILES CHANGE FUEL FILTER MESSAGE APPEARED AND ENGINE DIED. TOWED TO A DEALER DIAGNOSED AS A HIGH PRESSURE INJECTOR PUMP FAILURE WITH METAL CONTAMINATION TO FUEL SYSTEM. I HAVE FOUND A BULLETIN DATED 2009 FROM EQUIPMENT MANUFACTURERS. THIS JOINT STATEMENT HAS INFORMATION ABOUT THE FUEL USED IN THE USA THAT I WAS NOT AWARE OF AND MAY HAVE AVOIDED THIS FAILURE. THIS IS A VERY EXPENSIVE REPAIR AS I USE MY TRUCK FOR WORK. *TR

  • Filed Jun 2013

    THIS STARTED JUST A FEW WEEKS AFTER I PURCHASED THE TRUCK, STILL UNDER WARRANTY. IT HAS BEEN IN THE SHOP TWICE FOR THIS. IT HAS HAPPENED 3 TIMES. WHILE DRIVING THE TRUCK WILL SHUT OFF LIKE YOU TURNED THE KEY OFF. VERY DANGEROUS WHEN DRIVING IN TRAFFIC. HAS BEEN IN SHOP TWICE FOR THIS PROBLEM, GMC HAS FAILED TO FIND OR FIX THE PROBLEM. I TOLD THEM THAT I WOULD NOT PUT MY FAMILY BACK INTO A TRUCK THAT HAS THE POSSIBILITY OF CAUSING A WRECK AND GETTING THEM HURT. FILED A CLAIM [XXX] WITH GMC CUSTOMER SERVICE, TRYING TO GET SOME HELP. NOTHING HAPPENED. THE GMC SERVICE CENTER TOLD ME THAT THEY COULD NOT FIND OR FIX THE PROBLEM, AND THAT I NEEDED TO PICK UP MY TRUCK. I TOLD THEM THAT IF THEY COULD NOT FIND OR FIX THE PROBLEM, I WOULD NOT PUT MY FAMILY BACK INTO AN UNSAFE TRUCK THAT COULD POSSIBLY GET THEM HURT OR KILLED. I TRIED TO HAVE SOMEONE FROM GMC UPPER MANAGEMENT CONTACT ME SO WE COULD COME UP WITH A SOLUTION. BUT NO ONE FROM MANAGEMENT WOULD CONTACT ME. SO I ENDED UP HAVING TO TRADE THIS TRUCK IN FOR A NEW ONE, WHICH COST ME MONEY OUT OF MY POCKET, HIGHER PAYMENTS, LONGER TERMS ETC. DON'T THINK IT WAS RIGHT THAT GMC WOULD NOT STAND BEHIND THERE PRODUCT. WHY IS IT THAT GMC DID NOT HAVE TO DO ANYTHING ABOUT A SAFETY ITEM THAT THEY COULD NOT FIX ? I WAS NOT ASKING FOR MONEY OR ANYTHING LIKE THAT, JUST SWAP IT OUT EVEN FOR A SAFE TRUCK THAT I COULD PUT MY FAMILY IN WITHOUT FEAR OF THEM GETTING HURT. BUT INSTEAD, GMC DECIDED TO FORGET ABOUT THE PROBLEM, AND IT ENDED UP COSTING ME AND MY FAMILY MONEY THAT COULD HAVE BEEN USED FOR OTHER THINGS LIKE FOOD, BILLS, MEDICAL ETC. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

• Vehicle Speed Control2

  • Filed Jun 2013

    TL* THE CONTACT OWNS A 2012 GMC SIERRA K-1500. THE CONTACT STATED THAT WHILE DRIVING 75 MPH, THE VEHICLE BEGAN TO DECELERATE AS THE WARNING LIGHTS IN THE INSTRUMENT PANEL ILLUMINATED. THE VEHICLE WOULD NOT ACCELERATE BEYOND 35 MPH. THE FAILURE WAS RESOLVED MOMENTARILY AFTER THE VEHICLE WAS RESTARTED BUT SOON RECURRED. THE VEHICLE WAS TAKEN TO THE DEALER, BUT THEY WHERE UNABLE TO DUPLICATE THE FAILURE. THE FAILURE WAS NOT REPORTED TO THE MANUFACTURER. THE FAILURE MILEAGE WAS 7,000. THE CURRENT MILEAGE WAS 20,000. KMJ

  • Filed Oct 2012

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING UPHILL AND ATTEMPTING TO DECELERATE. THE VEHICLE ACCELERATED ABNORMALLY. IN ORDER TO STOP THE VEHICLE, THE CONTACT ABRUPTLY APPLIED THE BRAKES AS THE ENGINE EXHIBITED A LOUD THUMP. THE CONTACT TOOK THE VEHICLE TO THE DEALER BUT THEY WERE UNABLE TO DUPLICATE THE FAILURE. THE FAILURE AND THE CURRENT MILEAGES WERE 5,545. UPDATED 13/13/12 *CN

• Visibility1

  • Filed May 2014

    PASSANGER FRONT DOOR HANDLE FAILURE. LOUD NOISE WAS HEARD UPON CLOSING OF THE DOOR. DOOR HANDLE PULL CLEAR FROM THE DOOR. WINDOW CANNOT BE ROLLED DOWN AND INTERNAL DOOR HANDLE IS INOPERABLE. *JS

• Latches/Locks/Linkages1

  • Filed May 2014

    PASSANGER FRONT DOOR HANDLE FAILURE. LOUD NOISE WAS HEARD UPON CLOSING OF THE DOOR. DOOR HANDLE PULL CLEAR FROM THE DOOR. WINDOW CANNOT BE ROLLED DOWN AND INTERNAL DOOR HANDLE IS INOPERABLE. *JS

• Wheels1

  1 involved a fire

  • Filed Mar 2014

    WHILE THE VEHICLE WAS BEING DRIVEN, IT JUST WENT DEAD, NO ENGINE, NO ELECTRIC, NO NOTHING. THE VEHICLE WAS LEFT IN PLACE AND AT SOME POINT, CAUGHT FIRE AND BURNED. A TOTAL LOSS. TO DATE, THE INSURANCE COMPANY HAS NOT PAID ME FOR MY LOSS BUT RATHER HAS GONE TO GREAT LENGTHS TO INVESTIGATE ME PERSONALLY, LOOKING FOR ANY REASON TO NOT PAY. SO, I'VE BEEN MAKING TWO VEHICLE PAYMENTS FOR THE LAST 8 MONTHS. AS A RESULT, I AM STRUGGLING FINANCIALLY. *TR

• Fuel/Propulsion System1

  • Filed Jul 2013

    WHILE PULLING MY FIFTH WHEEL TRAILER 12500# AT HIGHWAY SPEED 65 MPH PULLING A GRADE THE CHECK ENGINE LIGHT CAME ON AND THE REDUCED ENGINE POWER MESSAGE APPEARED ON THE DASH. THIS REDUCED AND LIMITED THE SPEED TO 50 MPH AND STEPS THE TRUCK DOWN FROM THERE UNTIL YOU CAN ONLY DO 20 MPH ON THE INTERSTATE. THIS ISSUE HAS HAPPENED THREE TIMES IN THREE MONTHS. *TR

• Exterior Lighting1

  1 involved a fire

  • Filed Oct 2012

    VEHICLE WAS TAKEN TO GMC DEALER FOR HEADLIGHT DEFECT AND WE WERE INFORMED THAT THEY WOULD HAVE TO ORDER PARTS. DROVE TRUCK BACK TO SITE AND WHILE TRUCK WAS RUNNING BUT STATIONARY SMOKE WAS OBSERVED COMING FROM THE ENGINE COMPARTMENT. WHEN THE HOOD WAS RAISED THE ENTIRE TRUCK BECAME ENGULFED AND COMPLETELY BURNED. *TR

• Visibility/Wiper1

  • Filed Aug 2012

    PURCHASE A NEW 2012 GMC SIERRA SLE ON 07/26/12. AS I LEAVE FOR WORK IN THE EARLY HOURS, IT REQUIRES THAT I USE THE DEFOG/DEFROST. ON THE MORNING OF THE 28TH I SELECTED THE DEFOG/DEFROST AND ONLY THE DRIVER'S SIDE CLEARED. THINKING IT MAY BE ISOLATED, I RECEIVED THE SAME RESULT ON THE 29TH. I CALLED THE SELLING DEALER ABOUT ANOTHER MATTER AND MENTIONED THIS PROBLEM. ON AUGUST 9TH THE TRUCK WAS TAKEN FOR SERVICE AND TO ADDRESS THIS ISSUE. WAS TOLD THAT IT IS OPERATING AS NORMAL AND THE DEALER TESTED TWO OTHER NEW TRUCKS. STILL NOT HAPPY WITH THE ANSWER, I CALLED GMC. THEY SETUP SERVICE AT ANOTHER DEALERSHIP FOR THE 16TH. AGAIN, NO PROBLEMS COULD BE FOUND PER THEIR TESTING, BUT WERE GOING TO CHANGE THE DUCT AS THE AIR FLOW WAS MUCH GREATER TO THE DRIVER'S SIDE. WHEN THE DUCT CAME IN, THEY OPTED NOT TO CHANGE IT, AS IT REQUIRES TO STRIP THE DASH TO THE WINDSHIELD. ALL THIS TIME GMC WAS UPDATED OF THE PROGRESS. THE SYSTEM DOESN'T CLEAR THE PASSENGER SIDE OF THE WINDSHIELD AND PASSENGER DOOR WINDOW. GMC STAND IS, THAT ENGINEERING DESIGN THE SYSTEM THIS WAY TO CLEAR THE DRIVER'S SIDE QUICKER DURING POOR WEATHER, AS LIKE SNOW AND ICE. MY STAND IS THAT THIS IS NOT A PROPER ANSWER FOR A VEHICLE MAKER TO STATE. THIS ISSUE MAKES THE VEHICLE UNSAFE TO OPERATE AND I DO NOT LIVE WITHIN AN AREA SEEING THIS TYPE OF WEATHER OFTEN. I HAVE READ MANY INTERNET ARTICLES RELATED TO THIS. OTHER OWNERS TRUCKS OPERATE PROPERLY CLEARING BOTH SIDES OR HAVE HAD THEM PROPERLY REPAIRED IF THEY HAVE HAD THE SAME ISSUE. I NEED TO HAVE MY VEHICLE REPAIRED SO THAT IT CAN BE OPERATED SAFELY. GMC WILL NOT ADMIT THAT THIS IS A PROBLEM REQUIRING REPAIRS. *TR

• Hydraulic1

  1 involved a crash

  • Filed Mar 2012

    JUST PURCHASES NEW 2012 GMC SIERRA 3500 , 400 MILES , HAVE HAD ALIGNMENT / STEERING PROBLEMS WITH A DRIFT TO LEFT AND A WONDERING STEERING WHEEL, ALSO BRAKE AND ABS LIGHTS ON, WENT TO DEALER THEY LOOKED AT IT FOR 2 HRS, AND SAID IT NEEDED A PART ORDERED AND THERE WAS A TSB ON IT, THE TECH SAID IT WOULD BE SAFE TO DRIVE BUT I WOULD NOT HAVE ABS BRAKES, ALSO HE WOULD CHECK ALIGNMENT AGAIN AT TIME WHEN PART CAME IN 4 DAYS EST, BRAKE AND ABS LIGHT REMAINED ON, VEHICLE DROVE FINE THE NEXT DAY UNTIL A ACCIDENT, WENT AROUND CURVEAT 55 MPH, APPLIED BRAKES TO SLOW, BRAKES WENT TO FLOOR UN ABLE TO SLOW AT ALL WENT OFF THE ROAD LOST CONTROL AND CRASHED INTO TREES, BOTH AIRBAGS DEPLOYED , WENT TO EMERGENCY ROOM WITH ARM INJURY AND RIB INJURIES, BRAND NEW TRUCK VERY SCARRY I WILL NEVER BUY A GM PODUCT AGAIN. *TR

• Engine And Engine Cooling1

  • Filed Mar 2012

    TL* THE CONTACT OWNS A 2012 GMC SIERRA. THE CONTACT STATED THAT WHENEVER THE VEHICLE WAS IDLING THE CONTACT NOTICED THAT THE VEHICLE WOULD VIBRATE WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS INFORMED THAT THE FAILURE COULD NOT BE REPAIRED. THE CURRENT AND THE FAILURE MILEAGES WERE 1,200. ..UPDATED 04/16/12 *BF UPDATED 05/07/12

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.