GMC Sierra Complaints (2016)

457 consumer complaints on file.

#11770275October 10, 2026
ENGINE, POWER TRAIN
TRANSMISSION WAS REPLACED ABOUT 13 MONTHS OR SO AFTER PURCHASING AND WAS ALREADY OUT OF WARRANTY.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11768638October 2, 2026
STEERING
Steering tried returning to center loss of electrical power service stabilitrack message service brake assist message engine tried to die had to disconnect battery to reset.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11763099September 9, 2026
AIR BAGS, LANE DEPARTURE: WARNING, LANE DEPARTURE: ASSIST
air bags on my truck still dont work and i was not told by sales person that the safety features didnt work on truck before purchase. Dealership has worked on it twice and the last tech airbags were working and they are not still same symbol saying airbag not working
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756538August 12, 2026
STRUCTURE:BODY
Paint is failing and delaminating from both rear doors around windows and also the truck bed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756191August 11, 2026
FUEL/PROPULSION SYSTEM, ENGINE
The vehicle stopped dead in traffic and would not restart. No warning lights. This is a huge safety hazard. Had to be towed to a dealership. The dealership and other diesel shops said the issue is a known catastrophic CP4 fuel pump failure. The fuel pump shreds and metal shavings are found throughout the fuel system. Requires a full fuel system replacement...quotes have been obtained from GM dealership and local diesel mechanics, ranged from $15,000-$17,000. There is a known fix and could have been solved by replacing the fuel pump with an alternative one, without putting us in a dangerous situation. There is also a settled class action lawsuit directly associated to this fuel pump and issue, however the vehicle was purchased in GA and therefore not included. Based on the VIN the truck would be included if sold within a qualifying state. GM corporate and dealers know about this problem and the safety risk, but are not even suggesting the fuel pump conversation as a repair. They are putting customers in dangerous situations and leaving them with high bills.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11752078July 22, 2026
SERVICE BRAKES
My vehicle a 2016 GMC Sierra 1500 upon lower idle speeds loses vacuum pressure. As the vacuum level drops the brake assist decreases, increasing the braking effort, extending the distance required to stop the vehicle, which increases the risk of a crash. I have had a warning light come on advising to service the brake assist system. I took my truck to a local mechanic who confirmed the codes and learned that there had been a GM recall associated with this failure at one time, with GM recall # N192268490. There is also NHTSA recall bulletin 19V645000 regarding this matter as well. Upon contacting some local GM dealers in the area, I was informed that my VIN was not listed as one of the vehicles affected by this recall, so a recall notice was never sent regarding my vehicle. I was also told that I just fell outside their 10-year window regarding this matter and that they would not repair this safety issue under warranty. I called the GM customer service who could not explain why the VIN associated to my truck was not listed and they said I should contact NHTSA and start a claim for potential reimbursement in the future after repairs are made. I feel that this is an unnecessary step as I believe GM should honor their product and repair an obvious safety issue with the truck, especially since they knew this was an issue in thousands of their trucks where it was not my fault my vehicles VIN was not included as a potential recall issue, but I am following their suggestion
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748967July 8, 2026
ENGINE
Catastrophic engine failure while traveling 40 mph. Dealership diagnosed as cylinder walls being scorched and rods blown through. No warning signs existed - just had a loud thud before the check engine light started flashing and grinding sound started coming from engine.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11747986July 2, 2026
UNKNOWN OR OTHER, ELECTRICAL SYSTEM
My HMI was "bricked" when onstar pushed an incompatible update when I changed the service plan. While driving the screen has intermittently turned off and on causing temporary unexpected loss of navigation functions, Bluetooth connectivity, and use of the back up camera. This causes a safety issue as the unexpected loss of display and connectivity has caused me to be unable to continue using hands free features during operation, and to no longer view behind the vehicle during entirety of backing. When I contacted OnStar support I was instructed to perform some troubleshooting and was then referred to the Connection Center Team. The CCT representative told me that my hardware was outdated and could not support the update. If a representative can confirm the problem retrospectivly, I think the representatives making changes to the service plan should also be able to proactively confirm incompatibility before causing the issue. There were no warnings. The issues first occured while I was driving on the day (6/25/26) my new plan began and the update was sent. I can make the HMI available for inspection upon request. I don't believe there is any actual issue with the hardware, just a negligent and incompatible software update.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11747508June 30, 2026
UNKNOWN OR OTHER
I noticed a "ticking" noise a few years ago, it wasn't that bad and while taking my truck to the dealer for an oil change I ask about it and the representative told me that in this models that was normal. Since it wasn't that bad and the truck didn't show any problems at that time, I just decide to let it be. This weekend I took my family out of state for a fun trip, and while going in the highway around 55-65 miles per hour, the truck suddenly lose power, it felt like it the truck "sits" the cars behind me had to dodge me and I lost control of the truck and had to steer to the right getting out of the highway and almost go into a ditch, thankfully nothing scaleted to a big and disastrous accident. The engine light started to flash. And suddenly stopped, I turn off the truck checked back for my family and after a few minutes, I started the truck again, the truck started right away and but I noticed the "ticking" got a little louder, talking to my neighbor about this he told me he had the same issue and hes motor went bad and they said it was a bad AFM system causing this, I started searching on line for it and see there been the same issues with the AFM with other drivers, and seen that the have the same issues Im confident that it is an AFM problem. Truck is been running and is my daily work car and I notice is loosing power, I contacted the dealer but haven't had any answer yet. I cant take it to a mechanic shop because they would charge me in between 2,500 to 5k to fixed, money that I dont have, while in the call with one shop he told me about this place to put a claim and notify about how dangerous this can be if in a highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11740687May 28, 2026
STRUCTURE
The contact owns a 2016 GMC Sierra. The contact stated that she had noticed the frame had rusted in two places. No warning lights were illuminated. The local dealer was contacted, who confirmed there were no open recalls. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was unknown.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729705April 7, 2026
POWER TRAIN, SERVICE BRAKES
1- transmission issue, it’ll occasionally slip from 1-2 gear and engine rpm’s will shoot up making it when you release the gas pedal it’ll kick into second gear it’ll also do minor kicks into other gears (8l90 transmission) 2- breaks issue, unsure of what the problem is but at very low speeds like parking or going in slow traffic the break pedal will get really hard making you have to press extra hard for it to break, releasing and pressing again doesn’t help either
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725474March 19, 2026
POWER TRAIN
since we have had this truck the transmission has not worked right to where no longer works plus we have paperwork from other dealship have said this truck should have never been sold to us by the other deal they told us this truck has a lot of issues and is not road safe we where told by that dealer they cant help us so we need help with this the truck don't even have 100,000 on it the truck also pulls to the light sometimes and sometimes to the right .....
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719983February 23, 2026
ELECTRICAL SYSTEM:HORN
The contact owns a 2016 GMC Sierra 2500. The contact stated that the horn was inoperable. The contact became aware of the failure when the horn failed to sound while locking the vehicle with the key fob. Upon investigation, the contact discovered that there were no recalls on the VIN related to the failure. Neither the dealer nor the manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 150,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715267February 3, 2026
AIR BAGS
The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving approximately 35 MPH, the vehicle crashed into a deer, causing significant damage to the front end. During the crash, no airbags deployed. The cause of the air bag's failure to deploy was not determined. The vehicle was repaired at the local collision center. Recently, while driving approximately 50 MPH, the driver pressed the brakes to decelerate before crashing into a deer. During the crash, the vehicle sustained minor damage to the front end, but all the air bags in the vehicle deployed, including the driver steering wheel air bag, the front passenger side air bag, the driver and passenger side curtain airbags and seat belt pretensioners, and the passenger side seat air bag. The driver's side seat airbag did not deploy. The contact suffered adverse effects of COPD due to the air bag powder during the deployment. No medical treatment was needed. The cause of the failure was not determined. The manufacturer and local dealer were not contacted. The contact indicated that due to the minor damage to the vehicle during the crash, the air bag should not have deployed. The vehicle was towed to a collision center and was determined to be destroyed. The failure mileage was unknown.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11712198January 20, 2026
ENGINE
Engine has developed a serious lifter / cam issue. dealer identified it as a result of Displacement on Demand design. Total engine replacement recommended by dealer but since the mileage on that vehicle is over 100,000 warranty, the repair is not covered. Known issue, should have been pointed out by dealer / manufacturer before warranty expiration. FYI _ I do all repair work at dealer. Vehicle looses power intermittently is is not drivable at any distance. Manufacturing / design issue known over different versions of this engine since 2010, I believe.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11710305January 12, 2026
SERVICE BRAKES
While traveling at low speeds in parking lots and in the operation of parking, my 2016 GMC Sierra 1500 gets a hard brake pedal that goes to the floor but I have no brakes. I almost hit a person in a local grocery store parking lot, at the bank driving up to the ATM, and I almost lost my truck over a bank because the brakes failed. This has happened multiple times at low speeds but it is getting more consistent recently. It has endangered myself and others. It is only a matter of time until damage occurs or someone gets hurt.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11706495December 22, 2025
STRUCTURE:BODY
The other night, I was backing into a parking spot at the market. As I slowed I noticed the brake pedal was getting harder to depress and it felt as though I was going to back into the car behind me. It took more effort to stop the truck.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11702181December 1, 2025
ELECTRICAL SYSTEM, VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
The contact owns a 2016 GMC Sierra 1500. The contact stated that while idling in the drive-through at a pharmacy, the contact noticed smoke coming from the rear window, and the rear window shattered. The contact stated that the defroster was activated at the time of the failure. There was no injury sustained. The contact deactivated the defroster and drove to the residence, where the contact disconnected the defroster fuse. The contact related the failure to Customer Satisfaction Program Number: N192265660 (Rear Window Defroster Thermal Events). The vehicle was not diagnosed or repaired by an independent mechanic. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 139,250.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11701194November 24, 2025
ELECTRICAL SYSTEM, VISIBILITY
The contact owns a 2016 GMC Sierra 1500. The contact stated that her husband remote started the vehicle. The contact stated that when the vehicle was started, the defrosters automatically activated. The vehicle warmed up for approximately 2 to 3 minutes. The contact stated that while leaving the driveway, her husband stopped the vehicle to assist with moving a lawn mower. Upon returning to the vehicle and looking through the glass her husband observed that there was smoke coming from the rear glass. The contact stated that her husband unlocked the rear doors and released the folding rear seat and saw that the defroster unit was on fire and smoking. The contact stated that her husband turned the vehicle off and the flames were self-extinguished; however, approximately 45-seconds later the driver’s side rear panel window shattered. The vehicle was not taken to a local dealer or independent mechanic to be diagnosed or repaired. The contact researched online and related the failure to Customer Satisfaction Program Number: N192265660 - Rear Window Defroster Thermal Events (Electrical System, Visibility). The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000.
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11693050October 13, 2025
UNKNOWN OR OTHER
Noticed the bed of my truck was touching the cab when looking under truck the frame is total structural failure rusted all the way threw on the driver side and beyond
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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