2016 GMC Sierra 2500

59 complaints on file, page 1 of 3.

1. Filed Jul 2, 2026Failure Jun 25, 2026Royal Palm Beach, FLElectrical 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 The CCT representative told me that my hardware was outdated and could not support the update.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.

   NHTSA complaint 11747986
2. Filed Feb 23, 2026Failure Nov 23, 2025150,000 milesHickman, NEHorn

   The contact owns a 2016 GMC Sierra 2500. The contact stated that the horn was inoperable. The contact became aware of the failure when the horn failed to sound while locking the vehicle with the key fob. Upon investigation, the contact discovered that there were no recalls on the VIN related to the failure. Neither the dealer nor the manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 150,000.

   NHTSA complaint 11719983
3. Filed Aug 2, 2025Failure Aug 1, 2025Texas City, TXFuel/propulsion system

   CP4 injection pump failure while driving nearly causing vehicle collision.

   NHTSA complaint 11677925
4. Filed Jun 19, 2025Failure Jun 5, 2025Montrose, COFuel/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.

   NHTSA complaint 11668022
5. Filed Jun 10, 2025Failure Jun 6, 2025Yucaipa, CAFuel/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

   NHTSA complaint 11666095
6. Filed May 14, 2025Failure Apr 22, 2025Shelley, IDEngine, 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.

   NHTSA complaint 11660921
7. Filed May 3, 2025Failure Feb 27, 2025ST Paul, MNEngine, 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)

   NHTSA complaint 11658680
8. Filed Aug 24, 2024Failure Aug 22, 2024Santa Clarita, CAFuel/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.

   NHTSA complaint 11610634
9. Filed May 24, 2024Failure May 24, 2024Graham, NCFuel system, Fuel pump

   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.

   NHTSA complaint 11590577
10. Filed Feb 23, 2024Failure Dec 1, 2022Farmersville, OHElectrical system

    2016 GMC SIERRA SHARK FIN ANTENNA GETS WATER UNDER AND DESTROYS ONSTAR, NAVIGATION, AND COMPASS OPERATION. THIS IS RECALLED IN 2015 BUT DOES NOT INCLUDE 2016 THAT HAVE THE EXACT SAME PROBLEM.

    NHTSA complaint 11573594
11. Filed Jul 20, 2023Failure May 24, 2023Richwood, TXFuel/propulsion system

    Fuel system failure

    NHTSA complaint 11533481
12. Filed Jul 20, 2023Failure Jul 8, 2023Tarboro, NCEngine

    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.

    NHTSA complaint 11533452
13. Filed Jul 11, 2023Failure Jul 4, 2023Pleasantville, IAService brakes

    Trailer brake system continues to pop up “service.”

    NHTSA complaint 11531600
14. Filed May 24, 2023Failure May 20, 202371,000 milesMilton, VTLugs/nuts/bolts/studs

    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.

    NHTSA complaint 11523640
15. Filed Jan 23, 2023Failure Jan 22, 2023Kansas City, MOElectrical system, Visibility/wiper

    I remote started my truck yesterday morning to get it warmed up before loading my family. They all then got into the truck, my 5 year old and 8 year old in the back seat in booster seats. I threw in some more bags into the back of the truck and started to climb into the truck. As I did that my kids were starting to get nervous and my wife was pointing and stating that the rear window slider was smoking. I put the key into the ignition and turned the key on. Upon doing that the smoke stopped but a few seconds later there was a loud bang, similar to a gun shot, and the rear passenger side window shattered. My 8 year old had glass hit her and my 5 year old was hysterical. Needless to say, the 5 hour drive home was not much fun for anyone after that occured.

    NHTSA complaint 11503149
16. Filed Jan 6, 2023Failure Jan 6, 2023Whittier, CAElectrical system, Service brakes

    I am receiving an on-and-off “Service Trailer Brake System” when towing and sometimes when not towing. Checked every component and alert does not stop. When this happens while I’m towing, trailer brakes stop working momentarily.

    NHTSA complaint 11500519
17. Filed Dec 2, 2022Failure Sep 7, 2022114,000 milesOcklawaha, FLFuel 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.

    NHTSA complaint 11495766
18. Filed Nov 14, 2022Failure Oct 10, 2022Clovis, CAEngine, 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.

    NHTSA complaint 11493553
19. Filed Aug 5, 2022Failure Jul 2, 2022Leominster, MAPower 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.

    NHTSA complaint 11477738
20. Filed May 26, 2022Failure May 26, 2022College Station, TXService brakes

    Service trailer brake system warning over amd over

    NHTSA complaint 11466299