2019 GMC Sierra 2500 Problems

On 07/10/2026 at approximately 1:10 a.m., the parked and unoccupied vehicle caught fire while turned off. The vehicle had not been driven for several hours. A neighbor was awakened by the horn/alarm and popping noises, observed fire near the passenger-side cab/engine area, and called 911. The fire rapidly spread throughout the cab, engine compartment, rocker-panel areas, wheel wells, and truck bed, creating an explosion hazard and threatening a nearby occupied residence and garage. The fire department extinguished the blaze, but the vehicle was completely destroyed. Before the fire, the vehicle had experienced recurring coolant warnings, a DEF-system warning, and delayed starting associated with the main battery. No smoke, fuel odor, intentional ignition source, charging device, or known external fire source was present before the incident. Weather was calm. The exact failed component and cause remain UNKNOWN. A firefighter stated that the apparent fire origin was near the passenger side of the vehicle. The remains are available for inspection, subject to coordination with the vehicle owner and insurer. The incident has been reported to the fire department, insurer, manufacturer, and NHTSA.

UI Bulletin #161b is for years 2020 and beyond. But my 2019 is having the same exact issue and the GM dealer will not cover the work as stated in the UI Bulletin #161b

On 07/10/2026 at approximately 1:10 a.m., the parked and unoccupied vehicle caught fire while turned off. The vehicle had not been driven for several hours. A neighbor was awakened by the horn/alarm and popping noises, observed fire near the passenger-side cab/engine area, and called 911. The fire rapidly spread throughout the cab, engine compartment, rocker-panel areas, wheel wells, and truck bed, creating an explosion hazard and threatening a nearby occupied residence and garage. The fire department extinguished the blaze, but the vehicle was completely destroyed. Before the fire, the vehicle had experienced recurring coolant warnings, a DEF-system warning, and delayed starting associated with the main battery. No smoke, fuel odor, intentional ignition source, charging device, or known external fire source was present before the incident. Weather was calm. The exact failed component and cause remain UNKNOWN. A firefighter stated that the apparent fire origin was near the passenger side of the vehicle. The remains are available for inspection, subject to coordination with the vehicle owner and insurer. The incident has been reported to the fire department, insurer, manufacturer, and NHTSA.

Emissions Code showed up on the dash display. Tried to fix the fuel filter and cleaned a sensor off and it still shows the emissions code.

The contact owned a 2019 GMC Sierra 2500. The contact stated that on several occasions while driving at undisclosed speeds, the vehicle lost motive power. There was no warning light illuminated. The vehicle was restarted; however, the failure recurred. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the rear fuel tank had failed and needed to be replaced. The vehicle was not repaired. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 65,580.

The contact owns a 2019 GMC Sierra 2500. The contact stated that while her husband was driving 30 MPH and depressing the accelerator pedal, there was an abnormal sound coming from the front of the vehicle, and the vehicle lost power unexpectedly. The contact stated that her husband was able to pull over to the right side of the road while waiting for tow truck assistance. The vehicle was towed to the residence. The vehicle was not towed an independent mechanic or dealer to be diagnosed. The engine was replaced, and the vehicle was repaired. The contact related the failure to NHTSA Campaign Number: 23V047000 (FUEL SYSTEM, DIESEL); however, the VIN was not included in the recall. The manufacturer was not notified of the failure. The failure mileage was 143,000.

The antilock braking system is not functioning properly. The sensor for the anti-lock brake control pump module is defective

DEFECTIVE TRAILER BRAKE SWITCH ,WHICH POSES A RISK TO MOTOR VEHICLE SAFETY IF YOU ARE TOWING A TRAVEL TRAILER, WHERE BRAKES FAIL LOCK UP IS POSSIBLE DANGEROUS TO PULL

The sockets in the rear brake lights had excessive corrosion and was causing the terminals on the bulbs to deteriorate. The lights were malfunctioning in all situations from braking, turn indicator and running lights. I was notified by the system that there was a problem. After trying to resolve the problem and replacing the bulbs the condition only worsened. I was then pulled over by law enforcement that told me I had nearly no rear lights at night. After banging the plastic light frames I was able to make it home. I brought my truck into the dealer who inspected and found faulty wiring from what I was told. I them paid to have both rear harness change and all the bulbs replaced to repair the condition. After review of the repair the dealer made no additional precautions to ensure that this condition would not return by placing any type of waterproofing dielectric grease in the sockets or connectors. So was this faulty wiring or simply a known defect. The dealer had them in stock which was surprising since I figure they would need to be ordered.

WHEN SHUTTING MY DOOR AND ESPECIALLY MOVING AND HITTING VERY LIGHT BUMPS IN THE ROAD AT ALL SPEEDS THE HEADLIGHTS SHAKE ON MY TRUCK . I HAVE THE HID HEADLIGHTS AND IT IS VERY DISTRACTING TO ME AND PROBABLY TO OTHER DRIVERS . I ONLY HAVE 500 MILES ONE MY TRUCK .

The contact owns a 2019 GMC Sierra 2500. The contact received notification of NHTSA Campaign Number: 21V496000 (Equipment); however, the part to do the recall repair was not yet available. The dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2019 GMC Sierra 2500. The contact received notification of NHTSA Campaign Number: 21V496000 (Equipment) however, the part to do the recall repair was not available. The contact mentioned that the manufacturer exceeded a reasonable amount of time for the recall repair. The dealer was contacted and confirmed that the part was not available. The contact had not experienced a failure. The manufacturer was not made aware of the issue. VIN tool confirms parts not available.

While merging into highway traffic the truck surged with RPM going to 5,000. Shortly after this event there was a grinding or rattling noise in the transmission bell housing along with unusual shifting behavior and a repeatble vibration + rotational noise between 50 and 60 MPH. The vehicle was brought to the dealer for inspection at least 4 times with claims they could not hear the obvious noise that did not go away. On the last drop off, I picked up the vehicle and the noise was gone but the shifting behavior and the constant vibration from the transmission still persists. The dealer said GMC would replace the transmission for approximately $10,000 but I would need to cover 50% of the cost. Vehicle had 35,700 miles on it and was 4 months beyond the 5yr warranty. Still unrepaired. No warning lamps, messages, or codes. Transmission component failure is imminent based on the vehicle behavior

4X4 LOW RANGE HAS NO POWER. I HAVE NEVER SEEN SUCH A WEAK PULLING TRUCK WHEN IN LOW RANGE

Tire size LT265/60R20. Left rear tire separated while driving at highway speed. Stopped along the freeway after feeling vibration not associated with road. This is the second separated tire on the same vehicle. First tire, the right rear, separated driving at highway speed 1 year ago.

TIRE IS SEPERATING AND CUPPING. YATES GMC REFUSES TO REPLACE, THEY ARE FACTORY TIRES WITH 21034 MILES ON THEM. ONLY ONE TIRE IS DOING THIS AND THEY SAY VEHICLE IS NOT TO BLAME.

4X4 LOW RANGE HAS NO POWER. I HAVE NEVER SEEN SUCH A WEAK PULLING TRUCK WHEN IN LOW RANGE

Driver seat belt would not recoil. Took to Royal GMC of Tucson and they said it was not a warranty covered part and would not repair it unless I paid for the seat belt replacement. Obviously, I need a seat belt as a safety feature being the driver so I had them order the seatbelt and they installed it. See attached receipt. I believe this should be a warranty item from the manufacturer as it is defective and a serious safety issue. The vehicle is a 2019. I am the only one that drives this vehicle and I have never had any accidents etc.

Mirror fails to come in sometimes