GMC Sierra Complaints (2017)

481 consumer complaints on file.

#11560067December 14, 2023
UNKNOWN OR OTHER
This complaint is about General Motors not allowing their Dealer Marty's Chevrolet of Bourne Ma. to recalibrate the odometer and speedometer and other parameters in the computer to match new 18"wheels and tires. The truck was built and set up for 20" wheels from the Factory. The previous owner installed 22" wheels immediately after leasing the vehicle. They never adjusted the computer for this change and as a result the odometer reading read 28700 when I purchased it in August 2023. As a result the engine hours do not correlate to the low miles and the speedometer reading is incorrect. This truck has about 75 to 80 thousand actual miles. When Marty's installed the new wheels that I bought, GM refused to authorize the computer adjustments for the new wheels. GM previously required this adjustment, but no longer does it. This is a safety risk and actual fraud because of the inaccurate miles recorded. I hope you can require them to authorize this adjustment.Attached is an old instruction from GM to dealers for this wheel size change work order.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11555389November 16, 2023
SERVICE BRAKES
It takes quite the amount of force to stop the vehicle brake pedal started feeling spongy and seems like it doesn’t have enough pressure constantly I have no brake fluid leaks or air in my lines it all comes down to the brake booster it seems like and I know a few vehicles had this problem but mine says it wasn’t but I believe it has been affected.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11554625November 11, 2023
ENGINE
I took my 2017 GMC Sierra 1500 SLE in to my local dealer because the engine was misfiring and there was a loud ticking noise coming from the engine. There was a sudden onset of loss of power, sluggish acceleration and shuttering. The dealership technicians did their diagnostics and found "cyl 1 miss fire removed valve cover and rocker arm found cyl 1 intake push rod bent replaced cyl 1 rocker arm push rods and all driver side lifters re[placed v loam resealed all 8 injectors cleared code miss fire is cured." This is a known GM issue as pursuant to service bulletin 15-06-01-002L. Upon further research from other complaints it was reveled to be caused by KNOWN defective or sub-par components being continually installed in GM vehicles. GM has knowledge of this issue and should take ownership of their shawty and deceptive work practices.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11553927November 7, 2023
ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR
The contact owns a 2017 GMC Sierra 2500. The contact stated that while his wife was driving at an undisclosed speed, the vehicle experienced a loss of power steering assist, and the brakes failed to stop the vehicle immediately. No warning light was illuminated. The vehicle coasted to the side of the road. When the contact arrived on the scene, he noticed that the generator pulley had detached. The contact then purchased a new generator, which he replaced himself. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 55,756.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11553703November 6, 2023
FUEL/PROPULSION SYSTEM
Vehicle has a hard shift in the lower gears. I have been told by GM authorized dealers and garages that the official suggestion from GM is a transmission flush, and that this may not resolve the issue. This service usually runs around $350+, and is not reimbursed at all or in part by the manufacturer. This has caused tire spin in parking lots and low speed situations (like crosswalks), and only seems to be getting worse as time goes on. This seems to be a widespread issue, with a large number of consumers reporting the same issue, and really seems to be a manufacturer defect
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11552058October 26, 2023
POWER TRAIN
After 80K miles on a 2017 GMC Sierra - my 6 Speed AT Transmission HMD 6L-80 failed. There appears to be know flaws in the GMC transmission, but no recall for my model and year.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11551022October 20, 2023
POWER TRAIN
The contact’s husband owns a 2017 GMC Sierra 1500. The contact stated that while her husband was driving at approximately 55 MPH, the vehicle hesitated and stalled. The check engine warning light was illuminated. The contact’s husband was able to restart the vehicle. The vehicle was taken to the dealer where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was repaired; however, approximately 1 year later the failure recurred. The contact stated that while her husband was driving approximately 55 MPH, the vehicle hesitated and stalled. An unknown warning light and the check engine warning light illuminated. The vehicle was towed to the dealer where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact stated that while driving approximately 45 MPH, the vehicle hesitated and stalled. The vehicle was restarted but the vehicle decelerated while the accelerator pedal was depressed. Additionally, the contact stated that she was informed by the dealer that the vehicle failed to shift into the intended gear and as a result, the transmission failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11550352October 17, 2023
POWER TRAIN, ENGINE
The contact owns a 2017 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, the contact stated that the transmission was slipping. The vehicle was taken to the dealer to be diagnosed. The vehicle was diagnosed with transmission failure and the contact was informed that the transmission needed to be replaced. The vehicle was being repaired by an independent mechanic. The manufacturer was not made aware of the failure. The failure mileage was approximately 46,000. The VIN was unavailable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11548856October 7, 2023
ELECTRICAL SYSTEM, SERVICE BRAKES, ENGINE
Service Trailer Brake System. This has happened in the past 3 Times, in which the local GMC Dealership has made me pay for New Batteries and other Fuel system issues. Dealership stated that this shows up because of a bad battery.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546766September 27, 2023
SERVICE BRAKES
At low speeds the brake pedal gets hard and it feels like the antilock brake system is activating, I believe this is the issue with the Brake booster vacuum pump. GM isn't calling this a safety issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546655September 26, 2023
POWER TRAIN
Truck all a sudden developed a Lifter noise under the hood and the check engine light came on Friday, September 8th. I checked the oil and oil pressure which was ok. Saturday morning 9/9 I notice some loss of power pulling out on Highway. I took the truck immediately to a friend who is a retired GM Master Mechanic. He coded P0300 and P0306 with 158 miss fires. The following Monday on September 11th I took the truck to Clift GMC in Adrian, MI. They confirmed a Lifter failure and bent Push Rod on Cylinder six. on my 5.3L engine. Since I have learned the AFM System on these engines is driving Lifter Failures. I was lucky my Camshaft was not harmed. My truck had 84,945 miles on it and is six years old. GM offered no, zero assistance. The Dealer could only state this is a well known issue which they see frequently offer a extended Power Train Warranty at a cost of $1600 t $2000 dollars. How is a Extended Warranty a solution to a poor Engine Design? Help!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11546419September 25, 2023
ENGINE
The contact owns a 2017 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle jerked and stalled with the check engine warning light illuminated. The manufacturer was notified of the failure and informed the contact that there were no recalls on the VIN related to the failure. The contact was referred to the dealer for assistance. The vehicle was not diagnosed or repaired. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11544551September 14, 2023
SERVICE BRAKES, HYDRAULIC
The contact owns a 2017 GMC Sierra 1500. The contact stated while parking at 5 MPH, the instrument panel went black intermittently. The brake pedal was firm and had failed to operate as needed. The brake pedal was pushed to the floorboard. The service brake assist warning light was illuminated. The vehicle was towed to an independent mechanic. The vehicle was diagnosed however, the cause of the failure was not found. The vehicle had not been repaired. The manufacturer was made aware of the failure and informed the contact to take the vehicle to the dealer for a diagnostic test. The failure mileage was approximately 48,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11542810September 5, 2023
ENGINE
At 48k miles with all service maintenance performed by GM dealer I experienced a ticking noise and loss of engine power. The vehicle was taken to dealership and I was told it was a lifter problem with no explanation of how or why this has happened. I was without a vehicle for 3 weeks. I picked up the vehicle and was told the vehicle was repaired only to still find the vehicle had hesitation while driving and still had a ticking noise in the engine. I returned the vehicle and am now told the engine needs to be replaced. I was also told that I am responsible for the cost of repairs. I found a class action has been filed against GM for this issue. I have been told that GM does not have a recall issued yet I was told at the dealership they have seen this happen and GM has a Service Technician report on how to fix this issue. At this time my vehicle is sitting at the dealership awaiting a response from GM to see if they will take any responsibility. My truck has been at the dealership since August 7, 2023. I have paid almost $2k and was told I would owe an additional $9300. to replace the engine. I do not have paperwork from the dealership to show service work performed. The dealership has not closed out my ticket however I have paid almost $2k for work performed. The dealership said that they matched the cost I have spent but I have no record of their costs.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11541181August 28, 2023
SERVICE BRAKES
Service Trailer Brake System Defaulting and is taking more time to stop my 2017 GMC Sierra Truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11540210August 22, 2023
ELECTRICAL SYSTEM, SERVICE BRAKES
Today August 22, 2023 at 2:30pm, just about to leave work home when I received a message on my dash board telling/showing me "Service Trailer Brake System". And that sign kept coming on every second all the way home from work, couldn't heard nothing else that us going on inside the car like my phone, radio, turn sign, etc..
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11539671August 20, 2023
POWER TRAIN
Transmission issues! Very hard shifting! Feels like someone ran into me from behind. Shutters while crushing at 45-48 mph. Vehicle shakes from transmission issues!! GMC will not do anything about it!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11538274August 13, 2023
POWER TRAIN
Transmission slipping in and out of gear. Transmission was serviced 5,000 miles previous to this for the 100,000 mile service at 95,000 miles. No issues were found at the time of service, now truck will slip out of gear on highways without warning. Transmission fluid is not dirty or burnt. Common reported issue according to online discussions and GMC needs to recall this model transmission
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11537603August 10, 2023
POWER TRAIN
Like so many others, I have persistent transmission or drive train problems in my 2017 GMC Sierra. This has been documented on multiple visits and test drives with the dealer where I purchased the vehicle and to another GMC dealer. The first occurrence was after about 4,000 miles. A loud clunk sound occasionally occurs while shifting thru low gears and the transmission shifts very hard. To the point that the transmission hesitates between gears and then jerks me back into the seat. The selling dealer has witnessed this and tried various repairs (supposedly flushed and replaced the fluid, supposedly replaced an unknown computer component, etc). None of this helped. Now the transmission also hesitates and seems to slip during a downshift thru the low gears. The selling dealer finally told me "nothing is wrong with this truck, so don't bring it back again". I assured them that I would never be back, especially when I'm in the market for a new truck. GM should take note of this, also. Online websites show many posts of owners having this issue. And neither the dealers nor GM are even acknowledging a problem, let alone offering a solution. Unfortunately for me and many others, the value of this vehicle is impacted by so many complaints, no action by NHTSA and questionable practices by GM and their dealers. Buyers beware!!! The transmission in this truck is junk and you won't receive any assistance from GM or its dealers. The only hope for owners of this truck is for NHTSA to step up, launch an investigation and require a recall. This a known issue to owners of this truck, GM, its dealers and the NHTSA. It's time for all of them to step up and do what's right for consumers.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11532052July 13, 2023
ELECTRICAL SYSTEM
Infotainment System will change stations, stop navigation / change navigation destination, stop / start playing on its own. Examples of recent issues: 1) While driving from southeastern Ohio to West Lafayette, IN, the navigation system (Apple play through the infotainment system) stopped navigation to entered destination and changed destination to home. This occurred while in Indianapolis and caused us to reroute until we noticed the issue. 2) While playing music from bluetooth, the Infotainment system changed from media play to radio play. The change in volume and music caused me to swerve suddenly while in downtown traffic. 3) The radio changed stations continuously for 5 minutes, changing screens and stations for 5 minutes until I finally shut it off. These are just a couple of the examples. Something happens every time I am in the vehicle, the extent varies. All of these situations cause the driver to lose focus of driving, and also create a shock when first happening. After investigation, I have found that many owners of 2017-2020 GMC vehicles with the Infotainment system have the same issue. Some have fixed the problem by installing new systems (GM offers an "upgraded" system that doesn't have the issue... Coincidence?). This leads me to believe that GM acknowledges there is an issue but will not fix it as a recall. I have video of the latest occurrence, but the site will not allow the file type to be uploaded.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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