2015 GMC Sierra 3500

31 complaints on file, page 1 of 2.

1. Filed Aug 24, 2026Failure Aug 10, 202637,000 milesQuilcene, WAService brakes, Pedals and linkages, Accelerator pedal

   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.

   NHTSA complaint 11759074
2. Filed Aug 27, 2025Failure Aug 10, 2025155,000 milesWaxahachie, TXAir bags

   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.

   NHTSA complaint 11683447
3. Filed Jun 21, 2024Failure Jun 21, 2024Eureka, MOAir bags

   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.

   NHTSA complaint 11595810
4. Filed Jan 25, 2024Failure Nov 18, 202348,815 milesRedondo Beach, CAEngine and engine cooling

   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,

   NHTSA complaint 11567785
5. Filed Dec 1, 2022Failure Oct 4, 2022Reno, NVElectrical system

   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

   NHTSA complaint 11495699
6. Filed Sep 21, 2022Failure Jan 21, 2022120,000 milesGlen Rock, PAHorn

   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.

   NHTSA complaint 11485685
7. Filed Sep 11, 2022Failure Aug 1, 2022Grantham, NHIntegrated trailer brake control

   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.

   NHTSA complaint 11483929
8. Filed Jul 28, 2022Failure Jul 28, 2022Nederland, COEngine

   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.

   NHTSA complaint 11476314
9. Filed Dec 22, 2021Failure Dec 1, 2021Millington, NJAir bags

   The contact owns a 2015 GMC Sierra 3500. The contact received a recall notification for 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 manufacturer was notified of the issue. The contact had not experienced a failure. VIN tool confirms parts are not available.

   NHTSA complaint 11444736
10. Filed Apr 30, 2021Failure Apr 26, 202090,665 milesSouth Jordan, UTFuel/propulsion system

    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.

    NHTSA complaint 11414587
11. Filed Jan 12, 2021Failure Apr 19, 201951,040 milesPalm Springs, CAElectrical system, Unknown or other

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

    NHTSA complaint 11387701
12. Filed Oct 21, 2020Failure Oct 21, 202043,000 milesApple Valley, CAService brakesCrash1 injured

    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

    NHTSA complaint 11365584
13. Filed May 20, 2020Failure May 18, 202033,000 milesSAN Antonio, TXSteering

    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.

    NHTSA complaint 11325288
14. Filed Jan 27, 2020Failure Jan 26, 2020106,000 milesSalem, MOEngine

    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.

    NHTSA complaint 11302285
15. Filed May 23, 2019Failure May 19, 2019103,000 milesDuncanville, TXFuel/propulsion system, Service brakes, Steering

    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.

    NHTSA complaint 11209541
16. Filed Feb 8, 2019Failure Jan 25, 2018Brentwood, TNSeat belts

    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.

    NHTSA complaint 11175203
17. Filed Jan 8, 2019Failure Apr 9, 201864,000 milesWellington, COVisibility/wiper

    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.

    NHTSA complaint 11165090
18. Filed Mar 28, 2018Failure Mar 28, 2018Goose Creek, SCSteering, Unknown or other, Wheels

    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.

    NHTSA complaint 11081808
19. Filed Jan 9, 2018Failure Jan 9, 2018Williston, NDExterior lighting

    HEADLIGHTS NOT BRIGHT ENOUGH TO SEE IN THE NIGHT

    NHTSA complaint 11061350
20. Filed Nov 20, 2017Failure Nov 5, 201736,000 milesMiddletown, RIExterior lighting

    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.

    NHTSA complaint 11047397