GMC Sierra Complaints (2019)

729 consumer complaints on file.

#11499667January 1, 2023
SERVICE BRAKES, ELECTRICAL SYSTEM, STEERING
Abs, traction control and trailer break system failure. Check engine light comes on and goes off after 5 cycles. It also says ESC warning drive with care and it flashes also and steering reduced
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11498261December 20, 2022
PARKING BRAKE
The contact owns a 2019 GMC Sierra 1500. The contact stated when he started the vehicle, the parking brake warning light illuminated. The vehicle was taken to the dealer and the computer was updated, but the failure reoccurred. On another occasion, while driving 70 MPH, the parking brake warning light and 4WD warning light illuminated. The vehicle was taken to the dealer again and the contact was informed that the actuator switch needed to be replaced. The vehicle was repaired, but the failure reoccurred. The manufacturer was contacted and stated that the vehicle needed to be diagnosed. The failure mileage was 37,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11497217December 13, 2022
STRUCTURE:BODY
The rear window on the 2019 GMC Sierra SLT leaks water into the cab. This presents a serious concern to the owner of the vehicle because unless you are specifically looking for the leak you may not even know there is one. Upon noticing the leak, one can witness a steady drip of water behind the rear seat, drivers side. My personal concern is that what happens after the water has leaked and had gone unnoticed for an extended period of time, does mold start to grow? Does my truck have mold growing in it? With two young children in the vehicle I am concerned about their health and safety. My frustration with this issue is that GM refuses to acknowledge that there is an issue. My dealer has brought this issue up with GM but the claim has been denied. I have no idea how long the leak has been happening but it’s a manufacturing problem that exists and it certainly shouldn't be the owners responsibility to fix the problem. More importantly, it shouldn't be my young childrens health that is affected by the manufacturers incompetency and ignorance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11496962December 11, 2022
ELECTRICAL SYSTEM
The rear window defogger is smoking and sizzling. The connection on the passenger side glass that connects the moveable harness for the center glass smokes and sizzles when the rear defogger is on. There is a recall on these vehicles in Canada for this issue. My concern is that it may start a fire. The connector is right behind the right rear passenger seat, imposing a threat to the occupant of that seat. Also, the rear defogger comes on automatically with heated mirrors when remote started. I cannot use remote start, mirror defogger, or rear glass defogger currently due to this defect. I noticed a sizzling sound while driving the truck. I pulled over and began searching. I found smoke being emitted from the connector attached to the rear glass on the passenger side. This is a serious issue. It is a fire hazard. The vehicle could catch fire while driving or while remote engine start has been activated in temperatures lower than 40 degrees. There is a difference in an uncommon electrical short and a known problem. General Motors is aware of this issue and there has not be a notification to owners in the United States nor are there any recalls or suggested repairs. The safety of consumers is in jeopardy with this known problem occurring in multiple lines of their vehicles. Any with a power sliding glass could be affected.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11495642December 1, 2022
ENGINE
I was on the highway going 60mph and the engine light came on and it said “low oil pressure, turn off engine”. I could not safely pull over and had to drive a half mile to do so. The vehicle was towed to the service station near my house that I’ve used before and the problem was a blown high pressure oil line. Technician said that the hose came undone at the crimp joint and that he’s recently seen other Sierras with the same problem. I checked my GMC app and there were no recalls so I authorized the repair and paid the $919 bill. A few days later I did a google search for 2019 GMC Sierra oil line problems and got several hits from the GMauthority.com site. It’s a known problem in Canada and Alaska (cold weather) and GMC will repair it at no charge if the vehicle was bought there and the repair is done by a GMC repair facility but they won’t reimburse me because I bought mine in MA. It was 24 degrees the day the line blew. The problem is that the part is faulty and fails at cold temperatures. There should be a recall on the high pressure oil lines for all vehicles sold in cold weather states.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11495342November 29, 2022
SERVICE BRAKES, ELECTRICAL SYSTEM, STEERING
The truck has 50,000 miles, purchased new. I don't tow or go off road. I take it to the dealer every 5,000 miles. While driving 65-70mph on the interstate (4-lanes), my dash lit up with five messages and the "Brake, Traction Control and Engine" lights illuminated. I applied brakes but the pedal went to the floor and the steering veered to the left causing me to move out of my lane. The truck then went to limp mode and I was unable to go above 43mph the remainder of the trip home. After taking it to my dealer the next day, I was told they "found air in the brake fluid system due to secondary seal failure in brake master cylinder, and was quoted a new cylinder (PN 86788482) for $1708.06. RESPONSE TO QUESTIONS: >Component failure: brake master cylinder (eBoost Brake Unit Assembly) / Brake System Failure >It was just me in the vehicle - brake failure on the highway put me and others on the road at major risk >Yes - After paying to diagnose, I was told this was brake master cylinder failure. ...GM issued a Customer Satisfaction Program (N202324120) for a limited number of MY2021 Silverado/Sierra trucks (mine is a MY2019) for dealers to replace the eBoost brake unit assemblies due to failure >Part has not been inspected by my insurance rep./I do not know if anyone else has inspected >The warnings illuminated on the dash at the time of brake failure while on the interstate 1. "Service ESC" 2. "Service Trailer Brake System" 3. "Steering Assist Is Reduced Drive with Care" 4. "Service Brake Assist" 5. "Brake System Failure 43 MPH Top Speed" 6. Also, the BRAKE, Traction Control and Engine lights illuminated
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11492905November 9, 2022
STRUCTURE:BODY, ELECTRICAL SYSTEM
MY 2019 2500HD (49,00 MILES) TRUCK HAD WATER LEAKING IN THROUGH THE ROOF. THE DEALERSHIP FOUND THAT THE LEAK WAS CAUSED BY A BAD FACTORY TACK WELD ON THE PASSENGER SIDE ROOF SEAM. DUE TO THIS BAD TACK WELKD, IT CAUSED WATER TO LEAK DOWN THE A-PILLER, DOWN INTO MY ELECTRICAL FUSE BOX AND WIRING.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11491481October 30, 2022
POWER TRAIN
Stopping at a light and transmission jerks forward, almost causing me to rear end and other vehicle. Transmission jerks and clunks forward.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11491261October 28, 2022
SERVICE BRAKES
Service Brake assist is illuminated, Brake Failure has occured. Near miss on Busy street leaving parking lot.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11490822October 25, 2022
SERVICE BRAKES
I purchased a 2019 GMC Certified 2500 Diesel Truck with 48000 miles I started getting alerts on my dash stating TRAILER BRAKE SYSTEM over and over. I would press the dismiss button but it would not stop from appearing and dinging over and over. I took vehicle to dealer ship since I have remaining bumper to bumper and extended warranty coverage. To my dismay I find out the Dash Trailer Brake System switch is faulty. Good thing I had an extended warranty since the bumper to bumper does not cover electrical. While truck was still under warranty the same alert came on but the GMC dealership did not find and issues. I feel the trailer brake system was defective from the start. I am being force to pay over $300.00 out of my pocket since my extended warranty did not cover the entire cost. SHAME on you GM for putting cheap quality parts on expensive trucks...
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11489637October 17, 2022
TIRES
The contact owns a 2019 GMC Sierra LD equipped with 22” GMC tires but the spare tires are 17”. The contact stated that General Motors (GM) was recalling certain 2019-2021 GMC Sierra 1500 and Silverado 1500 vehicles equipped with certain accessory road tires and a 17" spare tire. The 17" spare tire provided with the vehicle was not compatible for use with the accessory wheels, which can cause the anti-lock brake system (ABS) to not function properly under certain conditions. As a result, the contact was concerned that the ABS could potentially fail on his vehicle. The vehicle was not diagnosed or repaired. The manufacturer was notified of the concern and the contact was advised to call the NHTSA Hotline. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11489355October 15, 2022
ELECTRICAL SYSTEM
Rear Vision Module failure. Open circuit inside module. “Service rear vision system” on radio while backing up. Was intermittent Blut not always on when backing ip
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11489057October 12, 2022
POWER TRAIN
When I first start the truck up and reverse out of my driveway once I shift it to drive it hesitates and feels as the transmission slips from 1st to 2nd gear. Makes it a safety issue due to the truck launching forward once the acceleration kicks in and the revolutions are high once the truck starts its speed from the hesitation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11488836October 11, 2022
SERVICE BRAKES
The trailer brake system has stopped working and displays the message "Service trailer Brakes" it does this no matter if several different tralers are hooked to the truck. These trialers test fine in other trucks and with meters. The trailer brake controller does not work. There are many owners reporting the same thing. It is a critical safety feature to stop the truck & trailer and probably already has led to some fatalities. Please issue a recall. Thank You.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483276September 7, 2022
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
Front passenger window when you push it up it goes up and then immediately back down.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11483169September 6, 2022
ELECTRICAL SYSTEM, ENGINE, POWER TRAIN
While driving down the highway at 70 MPH, the transmission slammed into gear and the engine died. A message appeared and said shift to neutral and press the ignition button. The check engine light also appeared. This had been a problem that first appeared at 48,000 miles. I was told that GM recognizes that there is an issue with the transmission, but that it would not damage the vehicle so it is not able to be repaired under warranty. The dealership advised that I should change the transmission fluid, so I did. The transmission continued to slam into gear thereafter. Fast forward to 55,000 miles where the truck completely died. The engine would not start and the truck had to be towed to a dealership. The next day the dealership told me that they had figured out the issue and that it was related to the fuse box and the ignition. I picked up my truck the next day, and drove less than a mile before the engine died again. I sat at the dealership for 12 hours and they had another answer for what was happening. They said that the shift lever was damaged and it was not allowing the battery to recharge. I live 400 miles away from where the truck broke down. I had to rent a vehicle to return home with my family from a trip. I now have to drive back to my truck in another state, and pay for the 12 plus hours of diagnostic work at $140 an hour as well as the cost of the part and the time to install it because the dealership stated that this is not covered by any warranty. I see that several people are dealing with a similar issue and I am frustrated that no one is willing to help us right this wrong. My grandfather worked for GM his entire adult life, and I will never own another one.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11481028August 24, 2022
SERVICE BRAKES
Brake pad monitor listed over 90% for both front and rear brakes then all of sudden I get warning light that says Service Brake Monitor. I have had this happen twice since I purchased this vehicle new. The dealership has fixed it twice, there were software bugs. I cannot tell when I have a real issue or is it just a software bug.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11480814August 23, 2022
TIRES:TREAD/BELT, TIRES
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11479903August 18, 2022
ENGINE
The contact owns a 2019 GMC Sierra 2500. The contact stated while driving 45 MPH, the stabilitrak stopped functioning properly. The contact stated no warning light was illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing to reset the computer electronic system. The vehicle was repaired but continued to experience the failure. The contact stated he was also smelling battery acid inside the cabin of the vehicle. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 21V496000 (Engine); the VIN was included. The manufacturer had been informed of the failure. The failure mileage was approximately 32,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11477555August 4, 2022
ENGINE
Lifters failed. Damaged crank. Just out of factory warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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