GMC Sierra Complaints (2019)

729 consumer complaints on file.

#11649046March 18, 2025
ENGINE
ENGINE FAILURE. CAM BEARINGS FAILURE. ENGINE SEIZED UP. SAFETY ISSUE: TRAVELING ON HIGHWAY TOWING A FISHING BOAT. PULLED OFF FOR FUEL. ENGINE COMPLETELY SEIZED UP WHILE AT GAS PUMP. IF IT HAD IT SEIZED UP BEFORE PULLING OFF HIGHWAY FOR GAS, GREAT RISK FOR A CATASTROPHIC CRASH, ESPECIALLY WHEN PULLING A BOAT TRAILER. ALL SYSTEMS INCLUDING STEERING SHUT DOWN. JOHN JONES CHEVROLET DEALERSHIP IN SCOTTSBURG INDIANA RAN DIAGNOSTICS AND CONFIRMED COMPLETE ENGINE FAILURE. FAULTY CAM BEARINGS SEIZED UP. ENGINE IS RUINED AND MUST BE REPLACED. INSPECTION BY JOHN JONES CHEVROLET DEALERSHIP. WE HAD BEEN ON THE HIGHWAY FOR 3.5 HOURS WHEN PULLED OFF FOR GAS. THERE WERE NO WARNING SIGNS. NO CHECK ENGINE LIGHTS, NO LIGHTS AT ALL ON THE DASH. NO UNUSUAL SOUNDS OR SMOKE. NOTHING UNUSUAL BEFORE THE ENGINE SEIZED UP.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649146March 18, 2025
ENGINE
The truck had been parked for about 4 hours, after a 250 mile trip. I cranked it and started driving to return home. I heard an intermittent squealing noise while driving. I had driven only about 2 miles when the engine suddenly shut down in heavy traffic on a four lane divided highway. I managed to get the truck into the median and stop. I was left stranded in the middle of the highway. It turns out the the engine bearing went bad and ruined the engine. I will now have to replace the engine at a cost of about $15,000.00. This is a safety concern when the engine suddenly failed and stalled while driving on a four lane divided highway, in heavy traffic.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11648450March 15, 2025
ENGINE, POWER TRAIN
valve train/camshaft fairlure which damaged entire engine - happened at 99,650 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647920March 12, 2025
ENGINE
The passenger side lifters in my truck failed while at idle/5mph speed causing catastrophic engine failure. 2019 6.2L V8 from GM. From my own independent research, and the research/survey of others online, this appears to be a very common problem as a result of known defective parts that were installed on GM engines.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647668March 11, 2025
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
While attempting to accelerate to get onto the expressway with no warning, the vehicle went into limp mode. Traction control, front end warning collision, auto/stop start functionality was all disabled and the engine light warning light on came on. The vehicle locked out and reduced acceleration. An attempt to pull over and turn the vehicle off for a few seconds was made. Once restarted, the vehicle continued running on limp mode at reduced speeds with the same indicators mentioned still disabled and locked out.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647686March 11, 2025
ENGINE
I was driving down [XXX] near Harrisburg PA in an active construction zone when the truck shut off, the dash blinked a few things very rapidly then went black. I was barely able to coast to an area large enough to get my truck out of the highway traffic. I was stranded on the side of the highway for 4 hrs and due to the construction hardly able to get out of the truck safely as it was around a bend. I’ve had to have the truck towed to a few mechanics to learn that it has suffered a catastrophic engine failure as all cylinders have lost compression. It made no noise at all. There was no signs this was going to happen, just driving normally then a complete engine failure resulting in no compression in all 8 cylinders with no noise. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647758March 11, 2025
ENGINE, ELECTRICAL SYSTEM, POWER TRAIN
Lifters in engine failed at beginning of March 2025 and destroyed inside of engine. Transmission failed in summer of 2024 and had to be replaced
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11647353March 10, 2025
ENGINE
It blew a hole through the engine block. The engine is a 6.2 L 87
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645901March 3, 2025
ENGINE, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
Cylinder 5 failure and cam shaft miles 78k. Have to replace full top end or brand new motor cost $10k up to $13k to fix at dealer
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645790March 2, 2025
POWER TRAIN
Bad torque converter with 56000 miles and a month out of warranty and GM says to bad.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11645829March 2, 2025
ENGINE, SERVICE BRAKES
I was traveling north on interstate 95 and approaching my exit ramp. I was initially in the inside lane of travel. I accelerated to merge into the outside lane, between two other vehicles, and then onto the exit ramp. Once on the exit ramp, I let off of the throttle and the engine suddenly shut down. I noticed a message on driver information center instructing me to shift the vehicle into neutral and press "start again". The engine had shut down without any warning whatsoever. I complied with the instructions to no avail. The truck is over half full of fuel. I was within an hour of home after completing an approximately 8 hour, 500 mile, round trip over 2 days of driving. After this event, I connected an OBD2 scanner and the only code found was P25A2 brake system control module. I placed the truck in park and tried repeatedly to start the engine. It would not turn over, crank or start. I had power to all systems and no other codes. I had to have the truck towed from the scene. The truck's performance had previously been flawless during this entire trip and had given me no warning whatsoever of the sudden engine shutdown. This is extremely dangerous and a safety concern.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644918February 25, 2025
ENGINE
Driving on the highway, while accelerating, heard a mechanical failure from the front end of the vehicle and had immediate loss of power, and reduction in performance/handling. The engine light came on and three warning messages; Service ESC, Service Parking Brake & Steering Assist is Reduced Drive with Care. Fortunately, the local GMC dealer was the next exit which is where the truck is currently located. The truck was inspected by the dealer and determined the engine should be replaced. It is available for inspection upon request. I have pictures of the warning messages and the work order from the dealer of their findings to date.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644298February 22, 2025
STEERING
While driving at low speed the power assisted steering quit working. I could steer but with great effort. Drove two blocks home. Shut it off and restarted. Everything was fine after restarting. I’m afraid to drive the vehicle after this experience.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643748February 19, 2025
UNKNOWN OR OTHER
The other day approximately 5 minutes after leaving my house I noticed a smell and saw some slight smoke coming from my rear window. I immediately turned off the rear defrost and my rear window shattered. The next day I discovered other Chevy/gmc vehicles have a recall for a short circuit in the rear defrost. Unfortunately the dealership will not help me until there is a recall with my vin as there is not an open recall on my vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643480February 18, 2025
POWER TRAIN
accelerating from a stop, 1st and 2nd gear hard shifts. gm previously changed program and type of fluid. said this was normal
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643486February 18, 2025
SERVICE BRAKES
Vehicle was having trouble accelerating, like the parking brake was on. Then received a message that the brake system failed, lane assist failed, and I couldn’t drive faster than 43 mph. Then a message about the trailer brake appeared
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643283February 18, 2025
ENGINE, ELECTRICAL SYSTEM
While driving at 65 mph on a freeway, the engine failed and cracked a rod with fresh oil and all maintenance done regularly. Truck brakes would not work after engine failure. Truck was fully disabled and I was stranded on freeway @ 90,000 miles. Lights on exterior of the vehicle were dim after engine failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643365February 18, 2025
SERVICE BRAKES, HYDRAULIC, ELECTRONIC STABILITY CONTROL (ESC), SERVICE BRAKES
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving approximately 20 MPH, the vehicle came to a screeching stop. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed that the electronic brake control module had short-circuited and there was a miscommunication, which engaged the parking brake and locked up the rear wheels. The vehicle was not repaired. The vehicle was previously taken to the same dealer on two occasions and repaired under NHTSA Campaign Number: 19V889000 (SERVICE BRAKES, HYDRAULIC, SERVICE BRAKES, ELECTRONIC STABILITY CONTROL (ESC); however, the failure recurred. The manufacturer was contacted and opened a case, but no additional assistance was provided. The failure mileage was approximately 7,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11643266February 17, 2025
ENGINE
This morning, while driving to work, my truck was operating smoothly without any prior warning signs. Suddenly, the dashboard displayed a message indicating "Low Oil Pressure" and instructed me to turn off the vehicle. There were no preceding alerts, such as check engine lights or low oil pressure indicators. As I was preparing to follow the instructions, the vehicle dashboard displayed another message directing me to put the truck in neutral, and then the engine automatically shut off. Unfortunately, after this occurred, I was unable to restart the truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11642922February 15, 2025
POWER TRAIN
The transmission failed and GM will not provide parts to repair the truck. Only has 57000 miles
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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