2016 GMC Sierra 2500

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/28/2016· ENGINE,FUEL/PROPULSION SYSTEM

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. WHILE DRIVING APPROXIMATELY 15 MPH, THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE WAS TOWED TO A DEALER WHERE IT WAS DIAGNOSED THAT THE FUEL INJECTOR PUMP FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 11,000.

• 12/09/2019· STEERING

  TRUCK STEERING IS VERY DANGEROUS. 4-8 INCH PLAY IN THE WHEEL LEFT AND RIGHT. YOU HAVE TO TURN THE WHEEL 4' EITHER WAY FOR IT TO RESPOND. THE DEALERSHIPS DON'T HAVE A FIX FOR THIS AND THERE ARE 1000 OF THREAD POSTS ON THIS ISSUE. THIS EXACT ISSUE. PEOPLE ARE GOING TO DIE IF THIS IS NOT FIXED PROPERLY AND RECALLED BY GM. THE DEALERSHIPS ARE PUTTING LOCTITE ON THE STEERING G BUT TO PREVENT IT FROM BACKING OUT BUT THIS DOES NOT LAST. IT HAPPENS AGAIN ONLY 1000S OF MILES LATER. GOING DOWN THE ROAD I ALMOST ENDED UP IN THE WOODS BECAUSE MY STEERING WOULD NOT RESPOND. NIGHTMARISH.

• 12/06/2016· ENGINE

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. THE CONTACT STATED THAT THERE WAS AN OIL LEAK AFTER SEEING A PUDDLE OF OIL UNDER THE VEHICLE. THE FAILURE OCCURRED WITHOUT WARNING. THE DEALER DIAGNOSED THAT THE TURBO WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE REMAINED AT THE DEALER WHERE IT WAS DIAGNOSED THAT THE OIL COOLER WAS DEFECTIVE. THE OIL COOLER WAS REPLACED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 4,400.

• 12/03/2018· AIR BAGS,UNKNOWN OR OTHER

  CEILING AIR BAGS DEPLOYED. WITH OUT TRUCK BEING COMPROMISED. ALSO SURGING DOESN'T WANT TO STOP REVS AT 1000 RPM AND PUSHES EVEN WHEN BRAKED LEEPS FORWARD.

• 12/02/2022· FUEL SYSTEM, DIESEL

  The contact owns a 2016 GMC Sierra 2500. The contact stated while driving 70 MPH, the vehicle lost motive power and stalled inadvertently, almost causing a crash. There was no warning light illuminated. The contact stated that she was able to veer to the side of the road by dodging traffic. The vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed that the high-pressure fuel pump had exploded and projected metal fragments throughout the high-pressure fuel system. The vehicle was repaired at the owner’s expense. The manufacturer was notified of the failure and informed the contact that a partial reimbursement would be made. The failure mileage was approximately 114,000.

• 11/14/2022· ENGINE,FUEL/PROPULSION SYSTEM

  While Pulling 35' 5th Wheel down freeway, a message appeared in instrument panel telling me the fuel filter was at 0 percent and was going into low power mode. There happend to be an offramp there that I was able to get off the freeway. While making the turn on the offramp the truck died. I pulled over as far as i could whie coasting with no power steering or brakes, leaving truck & trailer partially blocking the offramp. Unable to start the vehicle, I Immediatly contacted Onstar and they dispatched the CHP & tow truck. When CHP arrived he asked when tow truck would be there. Without being able to confirm exactly, and due to safety concerns because of blocking the offramp, he called his own tow truck (Rons Towing) and forced me to move vehicle to safe location. The issue ended up being the injector fuel pump (CP4) that GM was well aware of going out and sending metal fragments throughout the fuel system. I've been told the pump was made in China and not to GM standards. The vehicle has been repaired, all work was covered under extended warrenty, This all could have been avoided if GM would have replaced the faulty fuel pump under recall. Had this happened 100 miles further on our trip we would have been going over Pacheco Pass in Calif. Could have been a total disaster had we been going down the other side with No Power Steering & No Power Brakes pulling a 12,000 lb Trailer in the Dark.

• 11/13/2019· SERVICE BRAKES

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. WHEN THE BRAKE PEDAL WAS DEPRESSED, A VERY LOUD SQUEALING NOISE WAS HEARD. THE NOISE WAS SO LOUD THAT OTHER DRIVERS INFORMED THE CONTACT THAT THERE WAS AN ISSUE WITH HER BRAKES. THE NOISE BEGAN EVER SINCE THE VEHICLE WAS PURCHASED IN 2016. THE VEHICLE WAS TAKEN TO NICK ABRAHAM AUTO-MALL GMC (1115 E BROAD ST, ELYRIA, OH 44035) ON EIGHT OCCASIONS, BUT THEY WERE NOT ABLE TO REPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED CASE NUMBER: 9-563-9469535. THE APPROXIMATE FAILURE MILEAGE WAS 20,876. *BF *AS

• 11/05/2016· STEERING,SERVICE BRAKES,ENGINE

  WHILE DRIVING AT 45MPH IN THE LEFT LANE OF A MAJOR CITY THOROUGHFARE THE ENGINE QUIT RUNNING, POWER STEERING AND BRAKES DID NOT WORK. THE CHECK ENGINE LIGHT CAME ON WHEN THE ENGINE QUIT RUNNING. I WAS ABLE TO GET THE VEHICLE STOPPED BUT THE ENGINE WOULD NOT START. THE VEHICLE WAS TOWED TO THE DEALERSHIP WHERE I WAS TOLD THIS ISSUE WAS REPORTED IN ARKANSAS, LOUISIANA AND TENNESSEE. THE DEALERSHIP REPORTED THAT SHARDS OF METAL WERE FOUND IN THE FUEL INJECTOR AND THE ENTIRE FUEL SYSTEM WOULD HAVE TO BE COMPLETELY REPLACED. ADDITIONALLY I WAS TOLD THE PARTS ARE HARD TO GET. THE VEHICLE WAS PURCHASED NEW AND WAS 7 MONTHS OLD AND HAD JUST OVER 7,000 MILES. THE VEHICLE IS STILL SITTING AT THE DEALERSHIP 10 DAYS LATER AND HAS NOT BEEN MOVED FROM WHERE IT WAS DELIVERED BY THE WRECKER SERVICE. GM HAS BEEN NOTIFIED BUT NO RESPONSE FROM GM OR DEALERSHIP MANAGEMENT YET AS TO WHAT CAUSED THE ENGINE FAILURE. I OCCASIONALLY TOW A FIFTH-WHEEL RV WITH THIS VEHICLE. I NO LONGER FEEL SAFE DRIVING THE VEHICLE AND WOULD NOT CONSIDER PURCHASING ANOTHER UNTIL A DETERMINATION IS MADE ON EXACTLY WHAT WENT WRONG.

• 10/25/2024· ELECTRICAL SYSTEM,AIR BAGSCrash

  The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would lose automotive power. The vehicle was taken to a dealer where the negative battery was replaced. The vehicle was repaired. The contact stated that while her husband was driving at approximately 45 MPH, a deer ran into the middle of the roadway and impacted the front grill and bumper. The Service Air Bag warning light was illuminated. After the impact, the contact noticed smoke was leaking into the interior of the vehicle from the front driver-side and passenger-side air bags. The contact stated that the vehicle would not move forward or reverse after the impact. The contact stated that the front driver-side and passenger-side seat belts failed to retract or extend. The contact and her husband were able to unbuckle the seat belts and safely exit the vehicle in time. No injuries were sustained. No police reports or fire reports were filed. The vehicle was deemed a total loss and was towed to the contact's home where it remained for further investigation. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made not aware of the failure. The failure mileage was approximately 75,000.

• 10/22/2020· STEERING

  STEERING BOX ADJUSTMENT SCREW BACKED OUT CAUSING EXCESSIVE SLOP IN THE STEERING WHEEL. THIS IS A WELL DOCUMENTED PROBLEM WITH THESE TRUCKS WITH GM'S SOLUTION IS TO ADD LOCKTITE AND TORQUE NUT. I BELIEVE THAT THIS IS A TEMPORARY SOLUTION AND IT COULD BACKOUT AGAIN. SHOULD HAVE A MECHANICAL LOCK TO PREVENT IT FROM BACKING OUT.

• 10/16/2019· ENGINE

  2016 GMC DENALI 2500 6.6L DURAMAX DIESEL. CONSUMER WRITES IN REGARD TO FAULTY CRANKSHAFT THAT CAUSED IRREPARABLE DAMAGE TO ENGINE. *AS *JS

• 10/15/2021· ELECTRICAL SYSTEM,SERVICE BRAKES

  I keep getting a warning message "service trailer brake system". The warning may come on for a second or it may stay on for 10 to 15 minutes. It may do it once a month or 10 times in a 2 minute period. Whenever this happens I lose the electrical braking system on what I am towing. There is no set pattern or circumstance for when or how long it will happen. I was told if the alert is not on there is not a way to diagnose the problem and since I never know when it will happen I cannot schedule any type of diagnostic service. It does seem to happen more often when it is raining but has happened in perfect weather too. The warning has occurred both when I am towing and when I am not. I've done searches for possible causes and it seems to be a common problem. I regularly tow a 12,000 lb. fifth wheel RV with my family. I cannot afford to lose my ability to stop in a reasonable amount of time. I simply cannot do it when I lose my trailer braking system. The date below is the last incident.

• 10/02/2017· UNKNOWN OR OTHER

  I WAS DRIVING DOWN THE HIGHWAY, NOT UNDER AN OVERPASS OR NEAR OTHER CARS WHEN I HEARD A LOUD BANG. THIS NOISE SOUNDED LIKE A BOMB GOING OFF. I PULLED OVER AND LOOKED ON THE TOP OF THE TRUCK AND MY SUNROOF HAD EXPLODED. THERE WASN'T ANYTHING AROUND TO EVEN HIT IT. FROM THE LOOKS OF THE BREAK THERE HAD BEEN AN INTERNAL PRESSURE AS THE GLASS WAS STRESSED OUTWARD. IF THE SUNROOF PROTECTOR WOULD HAVE BEEN OPEN THIS WHOLE EVENT COULD HAVE BEEN LIFE THREATENING.

• 09/28/2021· STEERING,FORWARD COLLISION AVOIDANCE

  While driving down the road pulling a trailer The steering wheel started to get sloppy it got up to 3 to 4 inches of play in the steering wheel before the wheels return either way The adjustment screw locking nut and clip all came loose and backed out and caused a slap in the steering gearbox The truck became unsafe to drive I had to park the truck until the parts were ordered and the whole gearbox had to be replaced at a cost of over $1500. GM has service bulletins out there on this problem they all came from one assembly factory but they said they would not repair the truck it was under my expense

• 08/24/2024· FUEL/PROPULSION SYSTEM

  My high pressure fuel pump, cp4, went out with no warning while driving causing me to lose power. Was able to bring truck to stop safely but was stuck in middle of roadway.

• 08/24/2018· SERVICE BRAKES

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. WHILE DRIVING AT LOW SPEEDS, THE BRAKES FAILED TO OPERATE WITHOUT WARNING. THE CONTACT HAD TO APPLY EXTRA FORCE TO DEPRESS THE BRAKE PEDAL. THE VEHICLE WAS TOWED TO PARKS MOTOR SALES INC. (919 NASHVILLE HWY, COLUMBIA, TN 38401, (931) 398-5090) WHERE THE CONTACT WAS INFORMED THAT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE CONTACT STATED THAT THE VEHICLE REMAINED AT THE DEALER WAITING TO BE SERVICED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 61,000.

• 08/24/2016· UNKNOWN OR OTHER

  REPORTING A CONDITION OF POOR ENGINEERING / PROTECTION REGARDING THE LOCATION OF THE TRANSMISSION OIL COOLER BEHIND THE FRONT BUMPER. THERE IS AN OPENING FOR COOLING FROM RAM AIR THAT PROVIDES NO PROTECTION FROM DEBRIS, ROCKS, BIRDS, ETC FROM DAMAGING THE FINS AND/OR THE COOLER ITSELF. IF AN EVENT OCCURS FROM ANY OR OTHER SITUATIONS ABOVE, IT WOULD BE POSSIBLE TO HAVE THE OIL LINES PUNCTURED RESULTING IN CATASTROPHIC FAILURE OF THE TRANSMISSION DUE TO LOSS OF FLUID WITH LITTLE TO NO WARNING TO THE DRIVER.

• 08/15/2018· STEERING

  STEERING IS NOT TIGHT AND HAS A LOT OF SLOP BEFORE THE TIRES ACTUALLY TURN. GM DEALER IDENTIFIED A BAD STEERING BOX AND FOLLOWED TSB PIT5501F TO DETERMINE THERE IS A DEFECT.

• 08/11/2022· SUSPENSION

  The contact owns a 2016 GMC Sierra. The contact stated that while driving approximately 70- 85 mph, the vehicle was shaking. The stability track warning indicator light was illuminated and flashing on and off. The vehicle was taken to the local dealer but they were unable to duplicate the failure. The vehicle was not diagnosed or repaired. The vehicle was taken to several independent mechanics but they were unable to duplicate the failure. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 15,000.

• 08/07/2021· TIRES

  belt separation at highway speed Left Front tire

• 08/07/2021· TIRES

  LT265/60R20 Belt separated from tire, second failure on truck in 2 weeks

• 08/05/2022· POWER TRAIN

  As I was backing into my parking spot I heard a bag then the engine light came on, after that it wasn’t shifting correctly, had it checked out and was told the transmission has to be replaced the mechanic said that this transmission is known to be defective it’s only a 2016 I feel there should be a recall could have been a disaster on the road.

• 08/02/2025· FUEL/PROPULSION SYSTEM

  CP4 injection pump failure while driving nearly causing vehicle collision.

• 08/01/2019· STEERING

  2016 GMC SIERRA 2500 HD. CONSUMER WRITES IN REGARDS TO DEFECTIVE STEERING. *LD THE CONSUMER STATED THE VEHICLE WAS REPAIRED UNDER THE INSTRUCTION OF A SERVICE BULLETIN. THE CONSUMER REQUESTED TO REIMBURSED FOR THE REPAIRS. *JS

• 07/31/2017· STEERING

  STEERING WHEEL VERY LOOSE, CAN MOVE 3-4 INCHES WITHOUT ANY STEERING TAKING PLACE.

• 07/20/2023· FUEL/PROPULSION SYSTEM

  Fuel system failure

• 07/20/2023· ENGINE

  Vehicle is a Duramax Diesel engine with a CP4 fuel pump. The pump went out and the entire line/system has to be replaced. While driving the vehicle it lurched, made a noise then went to reduced power mode and shut off. Luckily we had just pulled off from a stop sign, if that happened and the speed of 55 it could of been far worse. Then engine would not restart and had to have vehicle towed.

• 07/11/2023· SERVICE BRAKES

  Trailer brake system continues to pop up “service.”

• 07/02/2026· ELECTRICAL SYSTEM,UNKNOWN OR OTHER

  My HMI was "bricked" when onstar pushed an incompatible update when I changed the service plan. While driving the screen has intermittently turned off and on causing temporary unexpected loss of navigation functions, Bluetooth connectivity, and use of the back up camera. This causes a safety issue as the unexpected loss of display and connectivity has caused me to be unable to continue using hands free features during operation, and to no longer view behind the vehicle during entirety of backing. When I contacted OnStar support I was instructed to perform some troubleshooting and was then referred to the Connection Center Team. The CCT representative told me that my hardware was outdated and could not support the update. If a representative can confirm the problem retrospectivly, I think the representatives making changes to the service plan should also be able to proactively confirm incompatibility before causing the issue. There were no warnings. The issues first occured while I was driving on the day (6/25/26) my new plan began and the update was sent. I can make the HMI available for inspection upon request. I don't believe there is any actual issue with the hardware, just a negligent and incompatible software update.

• 06/25/2019· SEAT BELTS

  REAR SEAT BELT RETRACTOR HAS STOPPED RETRACTING

• 06/20/2021· TIRES

  Tire tread bulged from center line of tire tread to outside of tread approximately 1 ft long. I had been highway driving for about 4 hours at 70 mph. Truck started vibrating and was becoming worse. I pulled over and found bulge in tire. I took it about 5 miles to Matlock Tire in Lenior City Tn. But by this time the tread was cracking and separating. I was able to get a used tire to bring vehicle home. The service person at Matlock Tire advised me to replace all the tires. If one did it they probably all are bad.The tires have been very well cared for. They have 7/32 tread across all the tires. Very even ware. No dry rot. They had been rotated and inspected at McKenny Chevy in Gastonia NC aweek earlier. I had just come through the mountains on route 40 and if the tire had let go it could have been catastrophic. The DOT tire number is from one of the other tires on truck. Matlock Tire kept bad tire. Attachment is invoice for repair and picture of one of other tires on truck.

• 06/19/2025· FUEL/PROPULSION SYSTEM

  The CP4 pump failed while driving causing vehicle to stall. Upon failure, lost power to steering. Luckily we were on an access road for a rest area and not yet on the interstate. This resulted in a 14.5 thousand repair. No prior warning to pump failure. GM has recently settled a class action related to this pumps failure and has never recalled trucks with this pump to avoid failure.

• 06/10/2025· FUEL/PROPULSION SYSTEM

  My vehicles High Pressure Fuel Pump failed causing the vehicle to shutoff while driving. In addition, due to the engine shutting down while driving, the power steering quit working causing me to not be able to steer the vehicle. Thank you

• 06/06/2017· ELECTRICAL SYSTEM

  THE 7 WAY TRAILER PLUG ON THIS VEHICLE WILL NOT HOLD THE TRAILER PLUG FIRMLY, RESULTING IN THE PLUG COMING LOOSE DURING NORMAL DRIVING CONDITIONS. ONE OBVIOUS ISSUE IS THAT THE FLAP HOLDING THE PLUG IN IS UPSIDE DOWN FROM ANY OTHER CONFIGURATION I'VE SEEN, ALLOWING THE PLUG TO SAG. THIS IS A SERIOUS SAFETY RISK AS I HAVE HAD SEVERAL INSTANCES WHERE LIGHTS AND EVEN THE TRAILER BRAKES HAVE STOPPED OPERATING WHILE IN TRANSIT , AFTER I GAVE VERIFIED THAT THEY WORKED WHEN I STARTED OUT. I THEN AM A HAZARD TO MY FELLOW MOTORISTS AND MY FAMILY. THIS TRAILER PLUG WORKED FLAWLESSLY WITH MY PREVIOUS TRUCK. GMS SOLUTIONS BLAME THE TRAILER OR PLUG, BUT GIVEN THE ORIENTATION OF THE PLUG AND THE NUMBER OF OWNERS THAT SEEM TO HAVE THIS ISSUE, I BELIEVE A BETTER SOLUTION SHOULD COME FROM THEM.

• 05/26/2022· SERVICE BRAKES

  Service trailer brake system warning over amd over

• 05/24/2024· FUEL SYSTEM, DIESEL

  The contact owns a 2016 GMC Sierra 2500. The contact stated that while stopped at a stop sign, an alert of "50% fuel range remaining" message appeared on the instrument panel. The contact stated afterwards while attempting to make a right turn the vehicle stalled and failed to restart. The contact had the vehicle towed to an independent mechanic who advised contact the fuel pump needed to be replaced due to metal fragments entering the oil tank. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was unknown.

• 05/24/2023· WHEELS

  The contact owns a 2016 GMC Sierra 2500. The contact stated that while refueling, he became aware that the front passenger's side wheel bearing was missing the nut and washers. Additionally, the vehicle made an abnormal jingling sound while driving at approximately 20-30 MPH. The contact, an independent mechanic, replaced one nut and three washers on the front passenger's side wheel bearing. The manufacturer was not made aware of the failure. The failure mileage was approximately 71,000.

• 05/23/2017· UNKNOWN OR OTHER

  VIBRATION BETWEEN 65-80MPH. DEALER HAS ROAD FORCE BALANCED TIRES TWICE WITH NO BETTER RESULTS. FIRST TIME ONE TIRE WAS FOUND TO BE OUT OF SPEC THEN 2ND TIME, ALL FOUR ARE IN 'SPEC'. I DON'T BELIEVE THIS IS A TIRE/WHEEL PROBLEM AS THE VIBRATION VARIES ON SMOOTH HIGHWAY - AT TIMES IT IS VERY SMOOTH THEN IT WILL START VIBRATING/BOUNCING. VERY UNNERVING DRIVING AT THESE SPEEDS WITH A VIBRATION THAT FEELS LIKE A LOOSE WHEEL OR OTHER DRIVETRAIN PART. MY SON HAD A 2015 MODEL HE BOUGHT NEW AND HE FINALLY SOLD IT DISCLOSING THE ISSUE (STILL UNDER WARRANTY) RATHER THAN CONTINUING TO WASTE TIME WITH GM. PROBLEM HAS EXISTED SINCE I BOUGHT THE TRUCK NEW OCT. 2016. 2016 GMC SIERRA 2500HD DENALI 20" FACTORY WHEELS.

• 05/21/2019· STEERING

  STEERING HAS EXCESSIVE PLAY BEFORE TIRES RESPOND. THIS HAS BEEN CASE SINCE A COUPLE THOUSAND MILES ON VEHICLE. HARD TO KEEP TRAVELING IN STRAIGHT LINE. ALWAYS HAVING TO CORRECT, ESPECIALLY WITH 17K FIFTH WHEEL IN TOW.

• 05/15/2024· AIR BAGSCrash

  The contact owns a 2016 GMC Sierra 2500 HD. The contact stated that while driving at 64 MPH, he crashed head-on with a 350-pound deer. The deer went underneath the vehicle, and the driver ran over it with the passenger front tire. The driver's side air bag did not deploy. The air bag warning light was illuminated. There were no reported injuries or fire. A police report was filed. The contact was able to drive away from the crash. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 85,379. Additionally, while driving in the snow, a motorcycle crashed into the rear of his vehicle. The driver-side front air bag did not deploy. There was an abnormal sizzling sound, and smoke was detected. There were no warning lights illuminated, There were no reported injuries, fore or police report. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted. The failure mileage was unknown.

• 05/15/2022· FUEL/PROPULSION SYSTEM

  Engine stalled due to fuel pump failure. Dealer had to replace entire fuel system

• 05/14/2025· ENGINE,FUEL/PROPULSION SYSTEM

  My 2016 GMC Sierra 2500 with a 6.6-liter Duramax diesel V8 engine suffered a complete engine shutdown—an issue that is both hazardous and expensive to repair. Fortunately, mine failed in a parking lot. No warning lights or symptoms were present. Failure is instantaneous and can occur any time rendering the vehicle inoperable on high-speed highways, Intersections, etc. Failure always leaves vehicle occupants stranded, creating an unsafe and dangerous situation. My vehicle was towed to a GMC dealer. Repair costs could be as high as $15,000. The 6.6-liter Duramax diesel V8 engine is equipped with a Bosch ‘CP4’ high-pressure fuel pump. These pumps are unreasonably fragile and prone to catastrophic failure causing instant contamination of the entire fuel system with metal shavings. General Motors has agreed to pay $35 million to settle with owners following a class action lawsuit that accused the company of installing defective Bosch CP4 high-pressure fuel pumps in certain Chevrolet and GMC pickup models. This action covered only owners in California, Florida, Illinois, Iowa, New York, Pennsylvania, or Texas.

• 05/03/2025· ENGINE,FUEL/PROPULSION SYSTEM

  Motor stopped dead while driving on a local Interstate Hwy. Was able to negotiate the truck out of traffic without crashing. Not an easy thing to do in speeding rush hour traffic. Had the truck towed to a reputable repair shop and discovered the CP4 fuel pump had failed and shattered throughout the fuel system. Repairs in the amount of $13,520.30 incurred to get the truck back in service. The attached invoice includes $167.87 for other maintenance not related to the CP4 fuel pump repair. This is a known problem and safely hazard. A class action suit settlement is related to the CP4 fuel pump against multiple truck manufacturers. # [XXX] and can be found at [XXX] . Minnesota is not included in the class action and GM will not address my complaint. Why has this KNOWN safety issue not resulted in a recall? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• 04/23/2019· STEERING

  VEHICLE HAS BEEN INTO GMC DEALERSHIP SERVICE FACILITY FIVE TIMES, IN THE SPAN OF 3 MONTHS. ALL SERVICE/MAINTENANCE HAS FOCUSED ON LOOSE STEERING AND UN-COMMANDED VEHICLE PULL. ISSUE REOCCURS IMMEDIATELY FOLLOWING SERVICE. FIRST ISSUE WAS EXTREMELY NON-RESPONSIVE STEERING, WHERE I COULD MOVE THE STEERING WHEEL MULTIPLE INCHES IN EITHER DIRECTION WITH NO MOVEMENT OR REACTION FROM THE VEHICLE. COMPOUNDED WITH STEERING WHEEL HAD TO BE HELD OFF OF CENTER TO MAKE VEHICLE TRAVEL STRAIGHT. GMC DEALERSHIP SERVICE TECHNICIAN PERFORMED GM RECOMMENDED FIX, WHICH DID NOT RESOLVE THE ISSUE. RETURNED VEHICLE TO GMC DEALERSHIP SERVICE DEPARTMENT, WHERE THEY FOUND THE STEERING GEAR, STEERING BOX AND PITMAN ARM TO BE DAMAGED AND THUS REPLACED ALL ITEMS. THIS DID NOT FIX THE ISSUE. RETURNED THE VEHICLE TO THE SERVICE DEPARTMENT, WHERE THEY FOUND NOTHING WRONG, AND RELEASED THE VEHICLE BACK TO ME THE CONSUMER WITH THE PERSISTENT STEERING ISSUE. THE STEERING IS LOOSE. THE WHEEL CANTS TO THE RIGHT IF IT IS LET GO OF, AND WHEN RETURNED TO CENTER, THE VEHICLE PULLS TO THE LEFT. TOOK THE VEHICLE TO A DIFFERENT DEALER, AND ASKED THEM TO INSPECT THE STEERING AND SUSPENSION COMPONENTS. THE DEALERSHIP TEST DROVE THE VEHICLE, NOTICED THE RIGHT OFF CENTER CANT, ALONG WITH THE LEFT PULL, YET FOUND NOTHING VISUALLY WRONG WITH THE STEERING OR SUSPENSION. THEY ARE REFUSING TO FURTHER DIAGNOSE THE ISSUE AS THEY CLAIM THEIR VISUAL INSPECTION FOUND NOTHING WRONG, YET WHEN DRIVING THE VEHICLE THERE IS A NOTICEABLE STEERING ISSUE. 2016 GM HEAVY DUTY TRUCKS HAVE THIS AS A KNOWN ISSUE, YET GM HAS NOT ACKNOWLEDGED IT OR CREATED A SOLUTION. THIS IS A HIGHLY UNSAFE CONDITION, WHERE THE STEERING IS UNRESPONSIVE, AND VEERS THE VEHICLE IN UN-COMMANDED DIRECTIONS.

• 04/20/2020· AIR BAGS,SEAT BELTSCrash

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. THE CONTACT STATED WHILE HER HUSBAND WAS DRIVING APPROXIMATELY 50 MPH, A DEER RAN IN FRONT OF THE VEHICLE CAUSING EXTREME FRONT END DAMAGE. THE CONTACT STATED THAT THE DEER ENDED UP UNDER THE VEHICLE. THE AIR BAGS DID NOT DEPLOY HOWEVER, SMOKE OR POWDER WAS SEEN COMING FROM THE FRONT FLOOR BOARD AREA. A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS NOT TOWED. THE CONTACT STATED AS THE FRONT SEAT PASSENGER SHE HIT THE DASHBOARD AND SUSTAINED INJURIES TO HER LEFT SIDE, SPECIFICALLY LEFT ARM, SHOULDER, AND JAW AREA. NO MEDICAL ATTENTION WAS NEEDED. THE CONTACT STATED THAT THE FRONT SEAT BELTS NO LONGER LATCHES DUE TO THE COLLISION. THE DEALERSHIP WAS NOT MADE AWARE OF THE FAILURE; HOWEVER, THE VEHICLE WAS TAKEN TO A COLLISION CENTER. THE VEHICLE HAD NOT BEEN REPAIRED OR FAILURE DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OPENED A CASE REGARDING THE MATTER. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.

• 03/30/2016· UNKNOWN OR OTHER

  VEHICLE SHAKES AND VIBRATES AT ANY SPEEDS ABOVE 75 MPH.

• 03/27/2020· UNKNOWN OR OTHER

  WARNING STATES TPMS NEEDS SERVICE. EVERYTHING WORKS OFF THIS SYSTEM, AIR PRESSURE, DOOR LOCKS, REMOTE START. NONE OF THESE FEATURES WORK NOW. MY SERVICE TECH SAYS THAT THE TIRE PRESSURE SENSORS ARE TRANSMITTING. NEW BATTERIES WERE INSTALLED IN THE KEY FOBS. FIRST TIME IT HAPPENED WAS WHEN I TRIED TO REMOTE START.

• 03/24/2022· STEERING

  2016 Denali 2500 Diesel - Loose steering, like many of the others complaining. I only have 13,000 miles on the truck since I don't drive it during Ohio winters (salt) and use it to tow my 6500 lb boat. Doesn't feel safe at all when towing. The dealer explained both the pitman and idler arm were worn. $1500 repair bill. Very frustrating that GM doesn't cover this potential safety related issue regarding vehicle control/stability. Several versions of Technical Service Bulletin's exist #PIT5501D as an example.

• 03/21/2019· SERVICE BRAKES

  TL* THE CONTACT OWNS A 2016 GMC SIERRA 2500. WHILE DRIVING VARIOUS SPEEDS, THE BRAKE PEDAL WAS DIFFICULT TO DEPRESS. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE CONTACT CALLED SUTTLE MOTORS (12525 JEFFERSON AVE, NEWPORT NEWS, VA 23602, (757) 886-1700) AND A SERVICE APPOINTMENT WAS SCHEDULED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 39,265. THE VIN WAS NOT AVAILABLE.

• 03/21/2016· STEERING,ELECTRICAL SYSTEM

  WHILE DRIVING MY TRUCK, IT HAS HAD 3 ALERTS ON DASH FOR "SERVICE STABILITRAK, POWER STEERING USE CAUTION AND TRAILER BRAKE." VEHICLE GAUGES ALL DROP TO ZERO WHILE OPERATING VEHICLE AND GO ON AND OFF. THE VEHICLE WHEN THIS OCCURS ALSO DISENGAGES FROM GEAR, VEHICLE IS AN AUTOMATIC. THEN ENGINE REVS UP WHEN IT SLIPS OUT OF GEAR AND GENERALLY GOES BACK IN GEAR AS GAUGES COME BACK ON. THE POWER STEERING SEEMS TO ALSO LOSE SOME POWER. WHEN THIS OCCURS, IF YOU DEPRESS THE GAS PEDAL, YOU DO NOT GET ANY MORE POWER. THIS IS TECHNICALLY THE 6TH OCCURRENCE. IT HAS BEEN BACK TO DEALER (GRIFFIN GMC OF MONROE, NC) AND COMPUTER CODES WERE CLEARED AND NOTHING REPORTED IE...TECHNICALLY FOUND THAT WOULD CAUSE THIS ISSUE PER THE DEALERSHIP AS UNABLE TO RE-PRODUCE THE CAUSE. I RETURNED THE TRUCK TODAY AFTER THIS 6TH OCCURRENCE DUE TO MY FEAR OF DRIVING THE VEHICLE WITH MY CHILDREN AND GETTING INVOLVED IN AN ACCIDENT. I HAVE VIDEO OF THIS LAST OCCURRENCE OF DASHBOARD GAUGES AND SHARED THEM WITH THE DEALERSHIP. FIRST OCCURRENCE PICTURES ARE FEB 29, 2016 AND SUNDAY, MARCH 20, 2016. VEHICLE HAS APPROXIMATELY 2000 MILES ON ODOMETER. ENTIRE TIME, VEHICLE HAS BEEN RUNNING ON LOCAL ROAD, EITHER AT STOP OR DRIVING BELOW 45MPH MOVING STRAIGHT AHEAD. I COULD NOT REPLICATE OR CAUSE THE ISSUE TO HAPPEN AGAIN ON PURPOSE, VERY RANDOM.