GMC Sierra Complaints (2019)

729 consumer complaints on file.

#11696291October 29, 2025
ENGINE
Defective out cool oil return line on v8 6.2L engine. Causing the truck to lose oil immediately due to being under pressure. Caused complete engine failure and required a new engine. That took 4-5 months to complete. Located in park city Utah a cold weather location. Not part of the 2019 recall for the same failure that gmc did in Canada and Alaska for a defective cool oil return line. When I called gmc to talk about it they referenced my vin and said it had no open issues and that they couldn’t talk about it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696321October 29, 2025
ENGINE
At approximately 61,500 miles, the engine malfunctioned while cruising on a 4-lane highway at 45 MPH. The problem was diagnosed by an independent mechanic as a crankshaft rod bearing failure. This failure happened despite all recommended maintenance being performed with specified parts. This failure caused a safety concern as the vehicle was in motion at the time of the failure, increasing the potential for a collision due to the vehicle becoming disabled on a highway. The engine was replaced at a cost of approximately $13,500 parts and labor. Vehicle was out of service for two months due to a waiting list on replacement L87 engines.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695978October 28, 2025
ENGINE
My engine has a loud knocking/ticking noise. I have had one mechanic look at it. He has me taking my truck to a dealership this week. He believes the known issue with GMC's 6.2 engine is taking place in the engine in my 2019. From a verbal conversation with the dealership, they believe the same. I was advised to complete this form ASAP.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11696122October 28, 2025
FUEL/PROPULSION SYSTEM, ENGINE, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
While towing a trailer on Highway 77 in northern Wisconsin, my 2019 GMC Sierra 1500 experienced a sudden engine failure. The dashboard lit up with alerts for the engine, transmission, ABS, and traction control. I safely pulled over in a 55 mph zone with narrow shoulders and heavy truck traffic due to nearby road construction. The truck lost all power, and I had to block the driving lane to transfer the trailer to another vehicle, creating a hazardous situation. There were no prior warnings or issues. The truck had regular service at independent shops, and I had checked and topped off the oil that morning. Lahti Towing & Service recovered the vehicle, changed the oil (no metal shavings), and replaced the camshaft sensor, but the truck still wouldn’t start. They then towed it to Rhinelander GMC, where a broken timing chain was diagnosed, requiring a full engine replacement. The vehicle is currently at Rhinelander GMC and available for inspection. I have photos of the dashboard alerts and data from the GM app documenting the incident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695424October 24, 2025
ENGINE
Pulled up to a stop sign, the engine shutoff and would not restart. Had the vehicle towed to the dealership. Received a call that the engine will need to be replaced. The code is a P0016. Same code as the other 6.2 L87 GM motors, but is not currently under the recall. They found no metal in the oil pan and the engine only has compression on cylinders 2 & 8. Make no mechanical sense. Before this, I had no engine lights, I had no oil burning, I had no smell of oil and the truck ran fine. No loss of power or any other issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11695231October 23, 2025
FUEL SYSTEM, DIESEL
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11694308October 18, 2025
ELECTRICAL SYSTEM
This truck needs 2500.00 in work to replace Electrical Harness after months of problems and evaporating leaks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693333October 14, 2025
STEERING
The contact owns a 2019 GMC Sierra 1500. The contact stated that occasionally, while driving approximately 57 MPH, the vehicle violently shuddered, causing the steering wheel to become difficult to turn in either direction. No warning light was illuminated. The vehicle was taken to a local dealer, where it was determined that the driver’s and passenger’s side front tires needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer where it was diagnosed; however, the cause of the failure was not yet determined. The manufacturer was made aware of the failure. The failure mileage was approximately 13,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692498October 10, 2025
ENGINE
I have a loss of power in the motor with engine codes diagnosed by the dealership of P0016, P0017. These are the same codes and symptoms that are included in the 2021 through 2024L 87 6.2 L motor recall. My motor is a 2019 edition but having the exact same issues. I know these are the same motors and is having the same issue. started having loss of power in May 2024 with engine codes coming in September 2025.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11692468October 9, 2025
ELECTRICAL SYSTEM, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
My truck has a blue screen that appears randomly on occasion that states service rear view system. This is a major safety concern. And after reading online it is a very common occurrence on 2019-2025 gm pickups. It needs to be recalled and a for sure fix done to prevent from backing into someone or something. I have small children and my biggest fear is running them over while playing in the yard and I rely very much on my rear view/360 camera to make sure this doesn’t happen even after double and triple checking they are no where near danger before stepping in my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691563October 6, 2025
ENGINE
Engine developed a clicking sound. Took to dealership and was diagnosed with rod and bearing damage requiring an engine replacement. Was fortunate to have inspected before engine failure while driving. No warning before the failure. I believe there is a known issue with the 6.2 L engines.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11691430October 5, 2025
POWER TRAIN, ENGINE
The engine lost all power while driving down the road and code says p0016 Truck is now at a GMC service station being torn down
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690721October 1, 2025
ENGINE, ENGINE AND ENGINE COOLING
The contact owns a 2019 GMC Sierra 1500. The contact stated that the vehicle was taken to the dealer for an oil change service. The contact stated that while in the process of picking up the vehicle, the dealer informed the contact that the vehicle had failed to start. The dealer determined that the engine needed to be replaced and provided an estimate for the repair. The vehicle was not repaired due to the cost. The manufacturer was not notified of the failure and informed the contact that the VIN was not included in a recall. The contact was referred to the NHTSA Hotline for assistance. The contact related the failure to NHTSA Action Number: PE25001(Engine, Engine and Engine Cooling). The failure mileage was approximately 115,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690628September 30, 2025
ENGINE
As I was turning left from a county road to a highway my truck died on me. I was able to push it out of the road with the help of two other motorist. This is the second time in 4 months were my truck broke down due to engine failure. I had the motor repaired the first week in June 2025 for a similar instance. My truck is at the dealership right now awaiting repair because GM will not recognize that my 2019 6.2 L87 engine has the same known defects as other 2019 6.2 L87. This is a safety issue which GM refuses to acknowledge on my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690173September 28, 2025
UNKNOWN OR OTHER
UNKNOWN: Transmission/Torque Converter etc. like driving over "rumble strip. shuddering (rumble strip feel, shake), when it happens (e.g., during light acceleration between 25–80 mph)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11689147September 23, 2025
FUEL SYSTEM, GASOLINE
The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving on several occasions at undisclosed speeds, the engine was idling low, and the vehicle hesitated like it would stall. The contact stated that while stopped at a red light on several occasions, while the accelerator pedal was depressed, the vehicle jerked and then accelerated. The contact stated that when the accelerator pedal was released, the vehicle continued to accelerate. The brake pedal was depressed to slow down the vehicle. The check engine warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed, and determined that the fuel pump module needed to be replaced. The vehicle was repaired, but the failure reoccurred a short while later. The manufacturer was notified of the failure. The failure mileage was 97,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11688847September 22, 2025
LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
The contact owns a 2019 GMC Sierra 1500. The contact stated that the tailgate was occasionally opened unexpectedly while driving at various speeds. There was no warning light illuminated. The dealer was notified of the failure and informed the contact that the failure might be related to an unknown recall that included vehicles or model year 2021-2025. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 123,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11688289September 19, 2025
ENGINE
Driving 30 MPH on 4 lane city road when engine shut off with many warning lights. Vehicle dead in the road, needed to be towed to dealership where I was informed that the engine had "locked up" They said they have seen many of these 6.2L engines locked up.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11688161September 18, 2025
ENGINE
One of the lifters collapsed resulting in catastrophic engine damage
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11687607September 16, 2025
ENGINE
Our GMC engine with VIN# above needs to be recalled due to the failed Active Fuel Management (AFM) lifter which resulted in misfire’s & engine failure. GMC's defective lifters create a safety concern due to potential engine stalling and power loss while driving, which can lead to dangerous traffic accidents. While GM has implemented extended component coverage for some issues and issued a recall for a related problem with L87 V8 engines, they have not with our GMC Sierra with the VIN# listed above, which has the same safety concern. Our GMC is currently at the dealership and we are determining next steps. Thankfully, my husband pulled over on the side of the road and turned the vehicle off before complete power loss. There was not much notification with the engine light prior to the incident. This could have ended very badly with my husband being injured or even worse my three children also being injured.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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