2018 GMC Sierra 3500

14 complaints on file, page 1 of 1.

1. Filed Apr 30, 2026Failure Apr 29, 2026177,000 milesPort Charlotte, FLFuel system, Gasoline

   The contact owns a 2018 Gmc Sierra 3500. The contact stated while operating the vehicle at an undisclosed speed the vehicle suddenly shutoff, the vehicle was coasted to side of the road. The contact referenced NHTSA Campaign Number: 21V739000 (FUEL SYSTEM, GASOLINE) however, the VIN was not included in the recall repair. The vehicle was towed to a dealer where it was diagnosed to be the fuel control module. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 177,000.

   NHTSA complaint 11734912
2. Filed Dec 16, 2025Failure Dec 1, 2025Albany, ORElectrical system, Automatic emergency braking, Service brakes

   Driving on the freeway going approx 70 MPH and the ABS warning light, and Stabilitrak warning light suddenly turned on. I’m sure you can imagine how panicked I was going that fast on the freeway and having my brake warnings suddenly turn on. Especially with my entire family in the vehicle with me at the time. Could feel a difference when I was attempting to brake and exit the freeway. Had to apply tons of pressure to get the brake pedal to engage. The cruise control would no longer work, and the trailer brake monitoring system also began flashing. Truck has been to 2 GMC dealerships the ABS module was replaced made it approximately 2 miles and it came back on. Truck is currently waiting for another part to attempt to fix the problem. Truck has 86,000 miles on it.

   NHTSA complaint 11705328
3. Filed Jul 29, 2024Failure Jul 26, 202453,800 milesHenderson, KYElectrical system

   The contact owns a 2018 GMC Sierra 3500. The contact stated while driving at various speeds, several unknown warning lights illuminated on the instrument panel. The contact pulled over to the shoulder of the roadway to restart the vehicle. After the vehicle was restarted, the vehicle hesitated to stop while depressing the brake pedal. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 53,800.

   NHTSA complaint 11605067
4. Filed Feb 14, 2024Failure Feb 14, 202470,000 milesGalloway, OHDefroster/defogger/hvac system

   The contact owns 2018 GMC Sierra 3500. The contacted stated that while the vehicle was parked in the driveway, the vehicle started and the defrost system was activated and the contact's daughter entered the vehicle and saw that it was smoking and informed the contact. When the contact arrived at the vehicle, the rear window had shattered. No warning light was illuminated. The vehicle was not taken to the dealer and was not repaired. The contact referenced GMC Customer Satisfaction Program Number: N192220470 (Faulty Rear Defrost Circuit) as a possible solution however, the VIN was not included in the recall. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.

   NHTSA complaint 11571837
5. Filed Feb 3, 2023Failure Jan 17, 2023Corpus Christi, TXVisibility/wiper

   17Jan2023. 2018 GMC Sierra 3500HD Denali. Northbound on I37 near Three Rivers, TX. Speed approx 75 mph. Temp approx 55F. Wx conditions, 1/2 mile vis in fog. Traffic, zero vehicles ahead, one vehicle approx 100 yards behind. Time approx 0815. No overpasses encountered. Cruise control engaged. My son and I were talking when we both heard a sound us above resembling ripping cloth lasting approx 1/2 second immediately followed by a loud explosion followed by the sound of fragmented clinking. The rush of wind noise followed as we could hear pieces of glass continue be taken by the slipstream. I was able to immediately deduce that the sunroof had catastrophically failed. I never use the sunroof or even open the slider so luckily it was closed as usual and no glass fell into the cab and no injuries were sustained. My son and I began to look around us while continuing down the highway to see if an object could've caused this. With no vehicles in a position to have flung a rock or other material and no overpasses in the area, we concluded it must've been a defect. I took the next exit and stopped in a gas station parking lot. We exited the truck and visually inspected the roof. The glass was indeed shattered. Further, the glass had appeared to failed outward as the remaining glass was directed away from the cab. There had been no prior indications of impending failure. There were no warning lights and the police were not called. Had a vehicle been close behind the outcome may have been worse as it would've been showered with debris. The vehicle is under warranty but GM has declined coverage, claiming it must've been a rock or something, even though that would've been impossible given the circumstances.

   NHTSA complaint 11505403
6. Filed Jul 5, 2022Failure Jul 5, 2022Grand Jct, COService brakes

   A persistent, very distracting alert saying "service trailer brakes"

   NHTSA complaint 11472456
7. Filed Mar 28, 2022Failure Mar 28, 2018Smyrna, DEService brakes

   The contact owns a 2018 GMC Sierra 3500. The contact stated after driving on a long downhill road at an undisclosed speed with his 2017 Highland Ridge 349 RV hooked to the vehicle, as he was reaching a leveling point and depressing the brake pedal to slow the vehicle, the brakes failed to operate as needed. The contact stated that as he depressed the brake pedal further, the brake pedal overheated and would no longer respond properly. The contact stated that the vehicle was rated at 22,000-23,000 while the trailer was 14,300 pounds loaded maximum. The contact stated that the trailer currently weighed 11,000 pounds. There were no warning lights illuminated. The contact stated that the failure had been reoccurring while driving. The vehicle was taken to the dealer who informed the contact that the braking system was operating properly. The manufacturer was not notified of the failure. The failure mileage was unknown.

   NHTSA complaint 11458637
8. Filed Apr 15, 2020Failure Apr 9, 2020Selden, NYService brakes

   APRIL 9TH 2020 I WAS OPERATING MY VEHICLE A 2018 GMC SIERRA 3500 DENALI EQUIPPED WITH THE DIESEL PACKAGE. I WAS TOWING A BOBCAT SKID STEER ON A TRAILER WITH A TOTAL WEIGHT OF APPROXIMATELY 4300LBS. I WAS TRAVELING AT ABOUT 45 MPH WHEN I ENCOUNTERED A RED LIGHT. WITH PLENTY OF ROOM TO STOP I APPLIED THE BRAKES AS NORMAL. THEY INITAILLAY GRABBED AND SLOW MY TRAVEL TO ABOUT 40 MPH. THEN OUT OF WHAT SEEMED NOWHERE THE BRAKE PEDAL RAPIDLY WENT TO THE FLOOR AND THE VEHICLE FREEWHEELED THROUGH THE LIGHT. I ATTEMPTED MULTIPLE TIMES TO EASE OFF THE PEDAL AND REAPPLY TO NO AVAIL. UPON ENTERING THE INTERSECTION I NEARLY CRASHED INTO A VEHICLE. WHEN I NEARLY I MEAN WITH INCHES. I IMMEDIATELY SLAMMED THE E-BRAKE BRINGING THE TRUCK TO A SKIDDDING HALT. AFTER DROPPING THE TRAILER OFF IN AN EMPTY PARKING LOT MY VEHICLE WENT TO MY LOCAL DEALER. THE SERVICE ADVISER WHO 1ST ENCOUNTERED THE VEHICLE EXPERIENCED THE ISSUE 1ST HAND.AFTER HAVING IT FOR NEARLY A WEEK THEY CALLED TODAY TO SAY 'THEY CAN'T FIND THE ANY ISSUES'. THAT MAKES THIS SITUATION EVEN MORE DANGEROUS. YOU'RE UNAWARE WHEN THIS CAN HAPPEN. THESE VEHICLES NEED TO HAVE A NEW RECALL IMMEDIATELY

   NHTSA complaint 11321259
9. Filed Nov 20, 2019Failure Nov 2, 201958,000 milesSpringfield, ORPower train, Service brakes, Steering

   I WAS DRIVING UP HILL THE TRUCK LOST POWER DIED/SHUTDOWN SO I HAD NO POWER STEERING NO POWER BRAKES WE LIVE ON A COUNTRY RURAL ROAD. HAD THE TRUCK TOWED TO KENDALL CHEVROLET IN EUGENE OREGON WHERE IT HAS BEEN SINCE NOVEMBER 2 WITH ELECTRICAL ISSUES THAT THEY ARE TRYING TO PINPOINT.

   NHTSA complaint 11281407
10. Filed Nov 8, 2019Failure May 9, 201816,068 milesHeflin, ALElectronic stability control (esc), Service brakes, Steering

    TL* THE CONTACT OWNS A 2018 GMC SIERRA 3500. WHILE DRIVING APPROXIMATELY 60 MPH AND HAULING A TRAILER, THE ABS, SERVICE TRAILER BRAKE, SERVICE POWER STEERING, AND SERVICE STABILITRAK WARNING INDICATORS ILLUMINATED. ALSO, THE VEHICLE LOST BRAKING FUNCTIONALITY. THE CONTACT ALSO STATED THAT THE FAILURE OCCURRED WHILE NOT TOWING A TRAILER. THE VEHICLE WAS TAKEN TO BUSTER MILES CHEVROLET (1884 ALMON ST, HEFLIN, AL 36264, (256) 781-4536) TO BE DIAGNOSED, BUT THE MECHANIC WAS UNABLE TO RETRIEVE A FAULT CODE. THE CONTACT WAS INFORMED THAT THE FAILURE MAY BE DUE TO A WHEEL SPEED SENSOR. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 16,068.

    NHTSA complaint 11278880
11. Filed Oct 2, 2019Failure Apr 2, 2018Banks, OREngine

    TL* THE CONTACT OWNS A 2018 GMC SIERRA 3500. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V328000 (ENGINE). THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. ROYAL MOORE BUICK GMC (1380 SE RIVER RD, HILLSBORO, OR 97123, (503) 648-1153) WAS CONTACTED AND CONFIRMED THAT THE PART WAS NOT AVAILABLE. THE MANUFACTURER WAS ALSO CONTACTED AND MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

    NHTSA complaint 11265682
12. Filed Feb 6, 2019Failure Oct 17, 201856 milesSpokane, WAExterior lighting

    SHAKING OR FLICKERING, HEADLIGHTS WHEN DRIVEN ON ROUGH ROAD SURFACES FLICKER OR SHAKE LIKE BLINKING YOU'RE EYES REAL FAST VERY DISTRACTING FOR MYSELF AND OTHER DRIVERS W.S.P. SAID IT IS A DEFECTIVE EQUIPMENT ISSUE SEND COMPLAINT TO A.G. WA. A.G. IDA. IDAHO ALSO SEND COMPLAINT TO B.B.B. AND N.H.T.S.A. HAD TRUCK IN 4 TIMES FOR REPAIR FOUND PROBLEM BULLETIN NUMBER 18 -NA-001 DOC. ID. 4924668 COMPLAINT TO GMC TALKED WITH 5 TIMES CLOSED MY COMPLAINT 02-06-2019 THERE IS NO FIX FOR THESE HEADLIGHTS. BOUGHT THIS TRUCK NEW 10-17-18 PROBLEM WAS NOTICED DRIVING IT HOME FROM KELLOGG IDA. TO SPOKANE WA. TOOK TRUCK IN AT 536 MILES FOUND PROBLEM TOOK TRUCK HOME IT DIDN'T FIX THE PROBLEM TOOK IT IN AGAIN 659 IT DIDN'T FIX THE TOOK IT IN AGAIN THE THIRD TIME IN AT 822 MILES HAND ME DOCUMENT NO. 4924668 AND INFORMATION NO. 18-NA-001 HEADLAMP SHAKES OR FLICKERS DO NOT FIX. TOOK TRUCK TO DAVE SMITH GMC DEALER IN KELLOGG IDA. FOUND SAME PROBLEM HAD TRUCK 4 DAYS SAME BULLETIN . CMC CLOSES THE CASE WILL LET ME KNOW WHEN AND IF IT CAN BE FIXED IN THE FUTURE SAID IT COULD TAKE YEARS. THANK YOU [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).' *PM

    NHTSA complaint 11174779
13. Filed Mar 26, 2018Failure Mar 15, 20181,000 milesSAN Marcos, CAExterior lighting

    HID HEADLIGHTS ON MY TRUCK FLICKER SIGNIFICANTLY, AND DIM AND BRIGHTEN, WHILE DRIVING VEHICLE ON BUMPY SURFACES. THIS IS BRAND NEW TRUCK WITH 2500 MILES ON IT. I PAID EXTRA FOR THE ALL TERRAIN VERSION. GMC'S OFFICIAL RESPONSE TO ME IS THAT IT IS NORMAL FOR HID HEADLIGHTS TO FLICKER ON/OFF, AND THEY ARE REFUSING TO DO ANYTHING ABOUT THE ISSUE.

    NHTSA complaint 11081400
14. Filed Mar 1, 2018Failure Jan 1, 2018THE Woodlands, TXSteering

    STEERING WHEEL SHAKING FROM 70MPH TO 78 MPH HIGHWAY DRIVING

    NHTSA complaint 11075573