GMC Sierra Complaints (2023)

567 consumer complaints on file.

#11519285April 27, 2023
POWER TRAIN
The contact owns a 2023 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, the contact smelled an abnormal odor. The vehicle was taken to the dealer; however, no failure was found. The contact stated that while driving at an undisclosed speed, the contact heard an abnormal sound and smelled an abnormal odor. The vehicle was taken back to the dealer, who diagnosed the vehicle with an oil leak; however, the dealer was unable to determine the location of the leak. The manufacturer was not made aware of the failure. The failure mileage was approximately 6,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11516652April 12, 2023
ELECTRICAL SYSTEM, SERVICE BRAKES
Bought the truck brand new. within a week the service trailer brake warning light came on. has been to the dealership 3 times and they still cant fix it. This affects towing of the trailer with no trailer brakes.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11513606March 24, 2023
FUEL/PROPULSION SYSTEM
The fuel in the tank is splashing around and makes bump sound when you come to a stop and is worse when the fuel take is full and goes away the lower the tank gets. GMC has a service bulletin out PIT5161J stating this is a normal condition. This is not normal, I have never had any vehicle I have owned have a fuel tank noise let alone have felt a bump that you can feel in the seat. There is obviously something manufactured wrong and needs to be addressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11510444March 6, 2023
VISIBILITY/WIPER, UNKNOWN OR OTHER
No incident as of yet. The wide angle driver mirror cannot be set high enough to see down the side of the truck. It is a factory installed towing mirror. I have to lower my my seat all of the way and I cannot see the top rail of the bed. The mirror won't let me see down the side of the truck which makes it really dangerous when I pull my 32' fifth wheel trailer. I took it to the dealer and they told me at first ( I purchased the truck on 01-22-2023) the mirror is one of 6 items that warranty doesn't cover. Then they told me it is very difficult to get the manufacturer to authorize replacement. The dealer eye balled a mirror just from standing in front of it on a lot truck and said he couldn't see a difference. All I can see out of it is basically is the rear tire. I called GM and the person looking into it was transferred after about a week. The person that took over asked me to give him a week to look into it. He called me today and said he hasn't had a chance yet that he needs a couple of more days.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11508802February 23, 2023
ENGINE
At just 600 miles, the 2023 GMC Sierra 3.0 Duramax gave out a check engine light. The code reader displayed a P0402. The truck had a very strong fume odor. The truck was taken to service two times. GM engineering made tests on the truck and concluded that the truck needs to be reprogrammed. I have a case number established with GM (case number 9-9217617941). If the program is bad, why release the product to the public? See attached invoice for details. This issue is present on almost all LZ0 GMC trucks based on people I've met in forums. Please help us.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11508226February 20, 2023
AIR BAGS
I was in an accident and was hit in the right front side of my truck. The other vehicle was believed to be going around 50 mph and I had just rolled thru a stop sign. The other vehicle that hit me had the air bags deploy, but my airbags did not deploy. This is very concerning considering there was enough force to significantly bend the frame on my truck. I was transported to the ER and suffered internal organ bruising due to the accident. If the airbags would have deployed, my body could.have not jolted so much causing these injuries.
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11506426February 9, 2023
ELECTRICAL SYSTEM, LANE DEPARTURE: WARNING, SEAT BELTS
The infotainment system loses all audio through the speakers intermittently. when this happens I also lose the Safety warning chimes as well. shutting off the vehicle for an extended period of time resets something and it resumes normal function. I have contacted GM customer service and spoke to 3 different representatives and requested an escalation to a Senior Advisor, which i was told could take up to 4 days to hear back. the vehicle has 800 miles and is 1 month old, this has occurred 4 times. it has not been looked at by the manufacturer as i am waiting for return communication. Other than no sound, everything else on the touch screen seemed to be working normal, but im no technician to determine that. i feel this is a safety concern as i travel with my 13 month old daily.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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