2019 GMC Sierra 1500 Complaints

ENGINE AND ENGINE COOLING,ENGINE — Filed 07/08/2026

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 55 MPH, the low oil pressure message was displayed. The engine oil cooler line had detached, and oil was leaking from the vehicle, causing the engine to seize. The contact associated the failure with General Motors Customer Satisfaction Program: N212326940. The vehicle was towed to the local dealer, where it was diagnosed that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer was contacted and opened a claim. The failure mileage was approximately 96,182.

POWER TRAIN,UNKNOWN OR OTHER — Filed 07/12/2026

TSB 19-NA-121. My truck is experiencing the exact issues detailed in the listed TSB. Randomly and quite often my truck feels like I am running over speed bumps. This just started about 3 days ago. The truck has been maintained. Oil is changed on time and there was a 100,000 mile service and I just had a 150,000 service done. Currently there are roughly $148,000 miles on the vehicle. Is there a way to have GM cover the costs of the repairs even though my VIN# was not listed. Also I am experiencing sudden power loss which is also mentioned in other bulletins. Basically it feels like the engine hesitates to accelerate.

ENGINE — Filed 07/09/2026

Engine failure at random while operating. Dealership stated vehicle blew engine block fuse and crankshaft is now seized.

ENGINE,FUEL/PROPULSION SYSTEM — Filed 07/13/2026

Total engine power loss while driving 70mph on the highway in steady moving traffic causing a safety hazard, with 3 young children in the vehicle. No prior warning lamps, messages or symptoms to indicate a problem. Engine completely shut down while driving and will not turn back on. Had vehicle towed to the dealership. Certified GMC dealership did a full inspection and indicated that the engine assembly needs to be fully replaced. NHTSA Campaign 25V274 for vehicles 2021 and newer is for the same exact engine failure issue with the same engine size. I would appreciate you exploring the possibility of covering this catastrophic malfunction as an exception to the aforementioned recall campaign. Many other drivers have noted the same failure with the 2019 as was included in the recall for 21-24. Thank you for your consideration, please feel free to reach out to me directly to discuss further. I look forward to hearing from you!

ENGINE — Filed 03/01/2026

This truck is equipped with the 6.2L L87 and the motor seized up and shut off with no dash light warning and i stalled and rolled over a curb! This is very dangerous and now i have to pay 10k out of Pocket for an engine replacement! Truck has low miles this is unacceptable and it needs to be in the recall , this is dangerous and it hurts people !

ENGINE — Filed 03/08/2026

Engine shut off while driving and steering wheel wouldn’t let me turn and I drove up on a curb into someone’s yard , There should be a recall on these trucks with the 6.2L in the year 2019, this is very dangerous I could of injured myself on injured someone else. This needs to be addressed!!

SERVICE BRAKES,ENGINE — Filed 12/20/2025

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the braking system had erroneously activated, causing the vehicle to abruptly stop in the middle of the road. The vehicle was towed to the local dealer, who diagnosed that the failure was caused by an engine malfunction of the number six cylinder. The vehicle was repaired. No further information was available. After retrieving the vehicle, the contact was driving approximately 10 MPH when the failure reoccurred and the braking system erroneously activated, causing the vehicle to abruptly stop. During the incident, the driver's head slammed into the steering wheel, causing a head laceration. No medical treatment was required. The vehicle was towed back to the dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 120,000.

POWER TRAIN — Filed 10/24/2025

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly hard downshifted. No warning lights were illuminated. The contact stated that the vehicle was hesitating while driving the rest of the drive. The vehicle was taken to the dealer; however, no cause for the failure was found. The dealer performed an 8-speed transmission fluid and filter replacement. The contact stated that the failure persisted. A month later, the contact stated that on a separate occasion, the transmission unexpectedly downshifted. No warning lights were illuminated. The vehicle was taken to the dealer; however, no cause for the failure was found. The contact stated that the failure persisted. The contact stated that a month later while her husband was driving on the freeway at an undisclosed speed, the engine seized and the rear-end locked and threw the driver into the steering wheel even though the seat belt was securely buckled. The contact stated that the transmission was stuck in drive(D), and the vehicle was unable to move forward. The driver shifted into reverse(R) and was able to pull off the freeway. The contact stated that the vehicle was then driven to an empty parking lot and left overnight. The vehicle was then picked up the following day and was driven to the dealer; however, no cause for the failure was found. The contact stated that the failure persisted. The manufacturer was notified of the failure. The contact hired a GMC engineer to inspect the vehicle and informed the engineer that the vehicle needed to be driven a minimum of three days and 300 miles before experiencing the failure. The contact stated that the engineer drove the vehicle for 100 miles. The contact stated that the GMC engineer and one of the employees at the dealer suggested replacing the PCM module because there was no fault code present during the failure. However, the contact was informed that there was no guarantee that replacing the PCM would fix the vehicle. The failure mileage was approximately 45,000.

UNKNOWN OR OTHER,BACK OVER PREVENTION — Filed 07/12/2025

On or around July 12th 2025 at low speed of 2-4 mph my rear end locked up sending everyone in the vehicle hard stop forward. The vehicle wouldn't disengage leaving me no choice but to have it towed for the second time 1st time happened exactly the same about month and a half prior. Gmc service department department claims they couldn't find anything wrong after it sat for two days in there lot after having it towed they were closed weekends and looked at it that Monday morning finding no signs of anything wrong. After picking up my vehicle I strongly feel like if at higher speeds or even environment this issue will endanger myself passengers and bystanders. I need help with resolving this safety issues asap please. Gmc hasn't been much help service department nor Gm support options.

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE — Filed 09/17/2024

While driving the vehicle caught engine fire later exploding within seconds.

STEERING,WHEELS — Filed 04/22/2024

While making a righthand turn at approximately 10-15 mph, my passenger side front wheel failed at the ball joint and collapsed. Reviewing the carfax, this is the 2nd time this has happened to this vehicle (the first was on the driver side wheel). I noticed Safety Recall Report 21V-718 seems to describe the issue I'm facing with the "front upper control arm experiencing accelerated wear... leading to ball joint separation", but according to GM, since no unsatisfied recalls are shown on my VIN report, there's nothing they're willing to do. I believe the failed part number is 573. This failure left my truck sitting in the middle of the road obviously with no way to move it other than a tow truck dragging it onto his bed.

STEERING — Filed 04/04/2024

Loss of steering multiple times. Very dangerous to try and drive. GMC says shut off vehicle for 20 minutes and try again. Once it worked otherwise it continued to lose power steering, either driving or turning on. I have went into GMC forums and found out there are thousands more people that this has happened to. Thank you for what you people do.

SEAT BELTS — Filed 08/09/2023

The contact owns a 2019 GMC Sierra 1500. The contact stated while her husband was driving at an undisclosed speed with her in the front passenger seat, he noticed that the vehicle in front of his had stopped. The contact stated that her husband immediately depressed the brake pedal, causing the vehicle to forcefully stop. The contact stated that the front passenger's side seat belt pretensioner failed to retract, causing her to hit the back of her head against the headrest. The contact stated that she sustained neck injuries but did not seek medical attention. The vehicle was taken to the local dealer, where it was diagnosed, but the failure could not be determined. The vehicle was not repaired. The contact stated that the failure had been recurring. The manufacturer was not notified of the failure. The failure mileage was 73,833.

AIR BAGS,FORWARD COLLISION AVOIDANCE — Filed 07/18/2023

What happened: the air bags failed to deploy during a crash. Question: What component or system failed or malfunctioned? Answer: air bags, automatic emergency braking, forward collision warning. Question: Is it available for inspection upon request? Answer: yes Question: How was your safety or the safety of others put at risk? Answer: driver-side air bags failed to deploy upon a rear-end collision with the vehicle to my immediate front @ 40 mph. Question: Has the problem been reproduced or confirmed by a dealer or independent service center? Answer: No. It currently is at a repair facility as of this morning and it’s apparent that the air bags did not deploy. Question: Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Answer: No, and not to my knowledge since turning the vehicle into the repair facility this morning. Question: Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Answer: None. No previous warning lamps, messages, or symptoms. *NOTE: I have dash cam video of the collision in my possession.

ELECTRICAL SYSTEM,ENGINE,ENGINE AND ENGINE COOLING — Filed 06/01/2023

The contact owned a 2019 GMC Sierra 1500. The contact stated while driving 60 MPH, the A/C stopped working. Additionally, the contact smelled an electrical wiring burning odor. There was no warning light illuminated. The contact then noticed smoke coming from under the glove compartment. The contact stated that he pulled to a carwash and exited the vehicle. An explosion occurred under the hood and the vehicle caught on fire. The contact stated that the vehicle burned significantly. The contact was able to extinguish the fire with the assistance of the fire department. A police report was filed. A fire department report was filed. There was no injury sustained. The vehicle was towed to a tow yard, where it was totaled. The dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was 49,653.

SEAT BELTS,AIR BAGS — Filed 08/22/2021

System that failed was the air bag system , Yes it can be available for inspection with notification, My family and friend were put at risk when the air bag system deployed in a parked car and seat belt restraints were deployed pulling them back into the seats , not moving and no other cars around it or near it went off Randomly it was NOT IN AN ACCIDENT , injuring the 3 occupants. The problem is still pending , At the dealer, and General motors has been notified . Case 9-6893265248, General Motors Product Assistance Claims (PAC) There has been a police report filled with local officials, I don't think the dealership has inspected , Buy recommendation of GM, since this is none accident related to the air bag system going off randomly, Very freighting to me and my family. No warning lamps no indication of anything wrong with the vehicle, prior to incident, And one of the boys could not exit the car due to the seat belts being cinched down on him during the air bag explosion. Incident happened 8/22/2021 at about 10:15 to 10:30 AM A week latter we are still waiting on answers from general motors as to what happened , This vehicle has never been in an accident , And we have all the service records from the dealership , The only place it has been serviced, GM has download data from the computers, And we have asked for copies of those data files as well, We do have all the service records as well should you need them.

SERVICE BRAKES — Filed 05/19/2021

Vehicle was 300 miles out of warranty when I get a service trailer brake warning on my info center replaced a blown fuse and the fuse blows again, no trailer has ever been hooked up to this truck. Went online and inquired about this problem and there's thousands of post and complaints about this problem, even on a GM site there's a PI investigation about this problem, why doesn't GM just do a recall to fix a problem they know about. I'm getting ready to buy a travel trailer and now I don't know if its safe to pull it!

UNKNOWN OR OTHER — Filed 09/23/2020

THE VOLUME CONTROLS ON THE STEERING WHEEL KEEP GETTING STUCK GOING UP CAUSING THE VOLUME TO GO ALL THE WAY UP AND WON'T LET YOU TURN IT DOWN. THIS HAS CAUSED ME NOT TO BE ABLE TO PLAY MUSIC BECAUSE WHEN I DO IT HURTS MY EARS CAUSING ME TO SWERVE.

AIR BAGS — Filed 08/20/2020

TRAVELING AT 68MPH, A DEER JUMPED IN FRONT OF ME AND I STRUCK THE DEER HARD ENOUGH TO CAUSE RADIATOR TO DUMP THE FLUID ONTO THE ROAD. SEAT BELTS LOCKED AND THE AIRBAG SYSTEM FIRED. SMOKE FILLED THE CAB AND THE COMPUTER REGISTERED AS AIRBAGS DEPLOYED. BUT THERE WERE NO AIRBAGS PHYSICALLY COME OUT INTO THE VEHICLE.

ELECTRICAL SYSTEM,STRUCTURE,ENGINE — Filed 06/02/2020

ON JUNE 2, 2020, MY VEHICLE WAS IN THE DRIVEWAY AND CAUGHT FIRE. I'M NOT SURE HOW IT STARTED. I HEARD A LOUD BOOM AND WENT OUTSIDE AND SAW MY TRUCK FULLY ENGULFED IN FLAMES. I PURCHASED THE VEHICLE ON 11/15/2019. IT HAD ONLY 4015 MILES AT THE TIME. THE VEHICLE WAS STATIONARY. THE LAST TIME IT WAS DRIVEN WAS AT 4:00 PM ON JUNE 2ND AND AT 9:58 PM IT WAS ON FIRE.

SERVICE BRAKES — Filed 02/13/2020

TL* THE CONTACT OWNED A 2019 GMC SIERRA. THE CONTACT HAD A RECALL FOR THE BRAKES AND HAD THEM REPAIRED. THE VEHICLE WAS SITTING IN A PARKED POSITION AND EVERYTHING SHUT DOWN. THE VEHICLE HAD NO POWER FOR ABOUT 25 MINUTES BEFORE IT WAS ABLE TO BE RESTARTED. THE PANEL STATED THAT THE VEHICLE WAS SHUT DOWN FOR A MANUFACTURER RESET. THE VEHICLE WAS DRIVEN AND THE BRAKES MALFUNCTIONED WHILE MAKING A LEFT-HAND TURN. THE VEHICLE CRASHED HEAD ON INTO ANOTHER VEHICLE. THE CONTACT STATED THAT HE BELIEVED THE OTHER DRIVER HAD BROKE HIS FOOT BUT REFUSED TO BE TRANSPORTED TO THE HOSPITAL. A POLICE REPORT WAS FILED. THE INSURANCE COMPANY TOTALED THE VEHICLE. THE CONTACT STATED THAT HE SUSTAINED SCRAPES AND BRUISES. HE WAS SEEN BY AN ORTHOPEDIC DOCTOR. THE MANUFACTURER WAS CONTACTED AND THEY SAID COULD NOT DETERMINE FROM THE VEHICLE'S BLACK BOX WHAT CAUSED THE ACCIDENT. THE UNKNOWN DEALER WAS NOT CONTACTED. THE VEHICLE WAS CURRENTLY BEING INSPECTED BY ENGINEERING FIRM HIRED OUT BY THE MANUFACTURER. THE FAILURE MILEAGE WAS 10,000. *BF *JS

STEERING,AIR BAGS,WHEELS — Filed 06/06/2020

STEERING FREEZE UP ON ME SON HIT AN ELECTRIC POLE HEAD ON ROLLED OVER FEW TIMES. THE FRONT AIR BAGS DID NOT DEPLOY AND THE LEFT BACK TIRE WAS DEPLOYED WITH THE ROTOR. THIS HAPPENED OUT OF THE CITY LIMITS COMING INTO TOWN. *TR

SERVICE BRAKES, HYDRAULIC,SERVICE BRAKES — Filed 02/07/2020

DRIVING MY 2019 SIERRA ON A SLIGHTLY SNOW COVERED ROAD APPLIED BRAKES AND TRUCK PULLED TO THE RIGHT AND ANTILOCK BRAKES NEVER WORKED CAUSING ME TO HIT GUARD RAIL. CALLED INSURANCE TALKED WITH DEALER ABOUT WHAT HAPPENED THEY SAID TO CONTACT GM CUSTOMER SERVICE. HAD MY WRECKED TRUCK FIXED AND WHEN GM GOT BACK TO ME THEY SAID THERE WAS NOTHING ELSE THEY COULD DO BECAUSE I CONTACTED MY INSURANCE INSTEAD OF DEALERSHIP???? NOW I HAVE RECEIVED ANOTHER RECALL NOTICE TELLING ME MY BRAKES ARE NOT RESPONDING PROPERLY. GUESS I NEED A LAWYER I DON'T KNOW. *TR

STRUCTURE,SERVICE BRAKES — Filed 02/07/2020

I WAS DRIVING TO WORK IN SNOWY CONDITIONS AND ON A VERY SLIGHT BEND ON A FLAT PUBLIC HIGHWAY MY TRUCK STARTING SLIDING AND AS I TURNED THE WHEEL AND APPLIED THE BRAKES THE USUAL ACTION OF ANTILOCK BRAKES DID NOT WORK AS INTENDED ALLOWING ME TO STEER CLEAR OF THE OBSTACLE CAUSING ME TO WRECK.2018 GMC SIERRA 1500

AIR BAGS — Filed 11/20/2019

TL* THE CONTACT OWNS A 2019 GMC SIERRA 1500. WHILE DRIVING 45 MPH, THE CONTACT CRASHED INTO A DEER. THE AIR BAG COVERS DETACHED, BUT THE AIR BAGS DID NOT DEPLOY. THERE WAS SMOKE DETECTED INSIDE THE VEHICLE AND THE SERVICE RESTRAINT MESSAGE WAS DISPLAYED. THE CONTACT STATED THAT THE HAZARD WARNING INDICATORS WERE ILLUMINATED. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE LOCAL DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 9-56540909990. THE VEHICLE WAS NOT DIAGNOSED. THE FAILURE MILEAGE WAS 6,000. THE VIN WAS NOT AVAILABLE.