2018 GMC Sierra 3500 Recalls & Complaints

Incident: April 29, 2026 · Filed: April 30, 2026

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.

Incident: December 1, 2025 · Filed: December 16, 2025

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.

Incident: July 26, 2024 · Filed: July 29, 2024

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.

Incident: February 14, 2024 · Filed: February 14, 2024

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.

Incident: January 17, 2023 · Filed: February 3, 2023

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.

Incident: July 5, 2022 · Filed: July 5, 2022

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

Incident: March 28, 2018 · Filed: March 28, 2022

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.

Incident: April 9, 2020 · Filed: April 15, 2020

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

Incident: November 2, 2019 · Filed: November 20, 2019

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.

Incident: May 9, 2018 · Filed: November 8, 2019

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.