GMC Sierra Complaints (2019)

729 consumer complaints on file.

#11655350April 18, 2025
ENGINE, POWER TRAIN, ELECTRICAL SYSTEM
I had engine failure two weeks after a schedule maintenance that included a tune up. When the engine failed all the components made the vehicle impossible to operate much less bring to a stop safely. I had to get the vehicle towed to the dealer. The dealer confirmed that the engine (6.2 V8) has a known documented issue. The vehicle is at my dealer with the engine being disassembled. There weren't any warnings as I stayed on the maintenance schedule that the dealer mapped out since my purchase. The problem began [XXX]. After researching the issue I found this online. That is how I found your web site. [XXX] 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
#11655469April 18, 2025
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
The contact owns a 2019 GMC Sierra 1500. The contact stated while the vehicle was parked, the driver's side tail pipe flange bolts connecting the tail pipe and the muffler snapped, causing the tail pipe to hang down. There were no warning lights illuminated. The contact had gone underneath the vehicle and saw that the muffler was disconnected from the tail pipe and that the exhaust bolts had snapped. The dealer was contacted, and an appointment was scheduled to have the vehicle repaired; however, the vehicle was not yet repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 107,105.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655159April 17, 2025
ENGINE
Engine oil coolant lines leaking at crimped fittings. Known problem on 2019 GMC Sierra Pickups 1500, under customer satisfaction program N212326940, known to affect in areas of very cold temperature weather, North Dakota where we live is extremely cold -45 deg F in winter. Risk of total oil loss and engine failure. Dealer replaced lines with no reduction in price for a known failure. Warning leaking oil on my driveway, filled engine, scheduled appointment and dealership replaced lines at full cost. This program to replace the lines at no charge should apply to all 2019 GMC 1500s that develop the leaks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654886April 16, 2025
POWER TRAIN
I bought this vehicle at 80k miles and I have had an on going issue with the transmission. I have done research online and found that GM had put the wrong fluid in the transmission from the factory that has caused internal issues with the transmission leading to hard shifting and transmission shuttering. On my dime I have changed the fluid twice already and also the torque converter as well. This issue has gotten better but still a problem. This has caused me to not be able to trade my truck with out being upside down because of the dealers telling me they would have to put a new transmission to sell it. So now my trucks value has dropped as well. Now I am stuck in a truck that is not safe to drive. Thanks GM for not helping me.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655037April 16, 2025
ENGINE AND ENGINE COOLING
The contact owns a 2019 GMC Sierra 1500. The contact stated that the vehicle was taken to the local dealer for a routine oil change. The dealer informed the contact that the oil level was low. The contact stated while driving at 25-30 MPH, the low oil pressure message was displayed. The contact pulled over and there was oil on the ground. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Action Number: PE25001 (Engine and Engine Cooling). The vehicle was towed to the local dealer again, where it was diagnosed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The approximate failure mileage was 127,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11654048April 11, 2025
POWER TRAIN, ELECTRICAL SYSTEM
Transmission keeps skipping missing gears and hard shifting, as well as jolting forward. When attempting to switch lanes vehicle transmission skips. When being placed from Park to drive or any other gear vehicle transmission hard shifts. Vehicle radio and screen shut off intermittently every 30 to 45 minutes. Vehicle screen goes blank and black and resets itself after 30 to 45 minutes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653824April 10, 2025
POWER TRAIN
Transmission has been failing for the life of this vehicle. Shuttered shifting and hard shifting are the norm. It is available for inspection. Vehicle does not shift properly when vehicle is in motion. Shifting is often delayed resulting in temporary loss of power. I have had the vehicle in to a transmission shop they have been able to reproduce the events. There are no warning lights visible to indicate an issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653799April 9, 2025
ENGINE
2024 the lifters when out in the engine and were replaced 2025 the engine malfunctioned while driving on the highway. There were messages that came up of low oil pressure and the engine completely locked up The dealership is saying the engine needs to be replaced
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653668April 9, 2025
POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 75 MPH, the vehicle occasionally downshifted or unintendedly came to a stop. There were no warning lights illuminated. The vehicle was taken to a dealer and the vehicle was diagnosed and the contact was informed that the transmission software needed to be updated. The vehicle was repaired; however, the failure persisted. The contact stated that on another occasion, the vehicle started to turn off unintendedly at traffic lights. The vehicle was taken to a different dealer and the vehicle was diagnosed and it was determined that the valve body software needed to be updated. The vehicle was repaired; however, the failure persisted. The contact stated that on another occasion, the vehicle started to vibrate violently while driving on the highway. The vehicle was taken to the original dealer and the dealer replaced the transmission; however, the failure persisted. The vehicle was taken to a different dealer and the vehicle was diagnosed with torque converter failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 48,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653430April 8, 2025
ENGINE, ENGINE AND ENGINE COOLING
The contact owns a 2019 GMC Sierra 1500. The contact stated that while his wife was driving 60 MPH, the engine seized, nearly causing a crash. The driver was able to veer to the side of the road. The check engine warning light was illuminated. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that the engine had seized and needed to be replaced. The dealer informed the contact that the upper part of the engine was previously rebuilt, and that the current failure was related to the lower part of the engine. The dealer informed the contact that there was a cost for the repair. The manufacturer was notified of the failure and offered a discount towards the repair. The dealer later informed the contact that the manufacturer would partially cover the repair cost. The vehicle was not repaired. The contact related the failure to NHTSA Action Number: PE25001 (Engine, Engine and Engine Cooling). The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11653116April 7, 2025
POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated while accelerating from a complete stop, the vehicle hesitated and the transmission experienced a hard shift to first gear. Additionally, the contact stated that the vehicle was shuddering while driving at slower speeds. There was no warning light illuminated. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a related recall. The failure mileage was approximately 38,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652728April 4, 2025
ENGINE
On 04-03-2025 while driving southbound in DFW International Airport. My Vehicle losses power in the Construction zone at 2:20 pm. Had enough momentum to maneuver to Terminal A exit stopping Midway up ramp. Danger to public if vehicle stopped on highway during the start of heavy traffic in construction zone with no soft shoulders for emergency's. No warnings from the cluster panel ever came up. on attempting to restart, check engine light illuminated after the fact. No Help! Vehicle is at Dealership currently awaiting further info.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11652807April 4, 2025
ENGINE
This incident happened without any warning at all on [XXX]. while driving 45mph on county road, the engine seemed to not be firing on all cylinders. Loss of power was immediate. accompanied by a rhythmic nocking that was felt and heard. I pulled off and called a tow truck. The engine is a 5.3 liter v8. At Pete Moore Chevrolet they said it was a failure of the number 8 cylinder valve lifters. that all lifters need replaced along with the camshaft due to scarring. Found through research that this is a frequent problem with engines 2014-2021. See - [XXX] , et al, vs General Motors LLC. (brought by Berger Montague) filed in the US District court of Eastern Michigan. Alleging defective valve lifters causing near or catastrophic engine failure. NHTSA has 39 active cases as well. Contacted GM Customer Satisfaction Program 3/27/25. Case #[XXX]. Goal to see with their prior knowledge of this issue could they help repair or replace the engine. 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
#11651613March 30, 2025
POWER TRAIN
Transmission hesitates. Transmission jerks when shifting. Possible torque conversion issues. Mileage is 35,623.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651438March 29, 2025
ENGINE, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING, BACK OVER PREVENTION: WARNINGS
I was driving down the road, got a quick message. It said something about lean and to pull over (on dashboard). And by the next stop light the engine stopped. The truck no longer turned on. It did put my life in danger because it left me stranded in between two lanes. The truck was inspected by one of my mechanic friends who owns a shop. He let me know my engine is seized.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651167March 27, 2025
ENGINE
While I was driving the engine started to lose power on the highway going about 70 mph with my four kids in the car. I had to quickly exit the highway and pull over. I was uncomfortable continuing operating the vehicle and had to get it to the closest GMC dealership which was in Killeen Texas. (Patriot Buick GMC). Upon diagnosis, I was informed that the lifters were damaged and needed to be repaired. Once the technician started the disassembly he noticed that the lifters caused damage to the cam shaft resulting in additional repairs which totaled approximately $8700 in damages/repairs required. I started to research this as the lifters typically do not fail in vehicles that are 80,000 miles or less. While conducting research I noticed that this is a common problem in the GMC Sierra 1500 to the point there is a lawsuit against GMC right now. I am frustrated because I believe that there should be a recall as the safety of my kids and I were put in danger for a part that is commonly failing in this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11651176March 27, 2025
ELECTRICAL SYSTEM
When going to shut off vehicle, when you push the push start button the engine will turn off but the radio and all the instrument panel, gauge lights, and dinging noise are still on. It states on the screen to shift to park. The vehicle is in park and even sometimes has the parking brake on. It can stay on from 1 minute to numerous minutes, which is only running my battery and other things down on my truck. This has happened daily.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650710March 26, 2025
POWER TRAIN
Transmission started fluttering around 60k miles. Per GMC Dealer - this is due to water getting into transmission from fluid put in at the factory. Even though dealer admitted that it's a defect from the factory, the warranty wouldn't cover the repair. This is a well known issue in the 5.3L 8 speed trans.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11650135March 24, 2025
ENGINE
Engine keeps running out of oil I’ve taken it several times to the dealership sometimes there was no oil in it. Only has 80,000 miles problem started 2 years having it
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11649695March 21, 2025
POWER TRAIN
The contact owns a 2019 GMC Sierra 1500. The contact stated while driving at approximately 20 MPH and making a left turn, the vehicle shook violently. The contact stated that no warning light was illuminated. The contact stopped the vehicle and turned off, and restarted the vehicle. The vehicle was restarted, but after shifting into drive(D), and depressing the accelerator pedal, the vehicle failed to exceed 30 MPH. The contact stated that the vehicle was making an abnormal "roaring" sound. The contact stopped the vehicle and had the vehicle to be towed to the dealer. The dealer diagnosed the vehicle and determined that the valve body on the transmission needed to be replaced; however, the part to complete the repair was on a national back order. The vehicle was not repaired. The manufacturer was informed of the failure. The contact stated that the failure was the second transmission failure. The contact had the transmission replaced in 2024 by the same dealer. The failure mileage was approximately 84,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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