2022 GMC Sierra 1500 electrical problems

Filed Nov 3, 2026 · Brakes, Electrical · OK

While the truck was under warranty it would go into limp mode. A dealer said they replaced the valve body but it did not look like anything had been done to it. It didn’t go into limp mode and seemed fine for a couple of months then it went into limp mode again and we took it back to the dealership. The hooked a scanner up and cleared the codes and it worked fine for a couple of more months. (This cycle happened repeatedly until it was out of the warranty.) We finally got our own scanner and cleared the codes like they did at the dealer and it would work fine for a while. Then one day driving at 60-65 mph it locked the rear wheels and we slid off into the ditch. It happened 4 more times before we got it home. (We were driving about 15 mph). We called the dealership and they said they couldn’t do anything since it was out of warranty and it could need a new transmission. It was never right from the time we bought it. The locking brakes could be fatal if it had happened on a busy highway. The first problem we had with it was the front grill flew off. We called the same dealer and they told us we pushed too hard on it closing the hood so they weren’t responsible. My husband fixed it and it never came off again but we saw later that it had been recalled for the same problem.

Filed Oct 12, 2026 · Electrical, Fuel system · FL

The Fuel pump modular system failed leaving me unable to start the vehicle and left me stranded in the [XXX] heat for hours. The vehicle only has 57k miles. There was a recall for this specific issue for many GM vehicles but not mine. There was no warning! It has been towed to Sheehan Buick in [XXX] and diagnosed as the Fuel pump Modular system but I am being told it is not covered under the recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 15, 2026 · Electrical · PA

The contact owns a 2022 GMC Sierra 1500. The contact stated that the vehicle intermittently failed to start and was jumpstarted on each occurrence. The contact purchased and installed a new battery; however, the failure persisted. The vehicle was taken to an authorized dealer, where it was diagnosed that a corroded ground strap had caused an electrical short to the battery. The dealer replaced the ground strap, and the vehicle was repaired. The contact associated the failure with Customer Satisfaction Program: N252515590; however, the VIN was not included. The failure mileage was unknown.

Filed Sep 7, 2026 · Acceleration, Electrical · TX

P2101 Reduced Engine Power Idle instabilitystruggling to idle correctly, hunting/surging slightly, and possibly going into reduced-power protection mode. While driving engine reducing power, struggles then surges forward. Ive taken it to GMC however the techs say they have to experience the situation themselves and are unable to diagnose

Filed Aug 25, 2026 · Driver assistance, Electrical · TX

I am filing a formal safety complaint regarding my 2022 GMC Sierra 1500 Denali (5.3L engine). This vehicle has exhibited a pattern of severe electrical, fuel system, and active safety sensor failures that pose a direct threat to occupant and public safety.At approximately 4,000 miles, the high-pressure fuel injectors suffered an early-stage mechanical failure requiring dealer repair.At approximately 24,000 miles, the vehicle suffered a catastrophic, un-warned total power shutdown while driving in the middle of active, fast-moving 5:00 PM rush-hour traffic on a 100-degree day in [XXX]. The vehicle completely stalled, causing a loss of standard driving capabilities and leaving the occupants stranded without air conditioning or cabin ventilation in an incredibly high-risk, live-traffic environment. The dealership attributed the failure to the fuel pump switch/control module.The vehicle's active safety framework is deeply compromised. The forward-facing front collision camera and its integrated crash-avoidance sensors have completely failed and required a minimum of three (3) separate repair interventions, yet the safety system remains broken and unreliable.The vehicle exhibits phantom electrical bugs. The MultiPro tailgate audio system consistently turns itself on while the vehicle is parked, locked, and closed, hijacking the driver's phone Bluetooth from inside the home. While driving down the road, the internal cabin radio will abruptly cut out and begin blasting audio through the exterior tailgate speakers, creating a severe driver distraction. The dealership has repeatedly dismissed these electrical safety anomalies as untraceable.3. Activating Your Texas Consumer Rights INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 31, 2026 · Driver assistance, Electrical · FL

My truck is intermittently having the camera display a warning code. While in reverse or while towing and trying to use the surrounding cameras. It happens randomly and almost caused accidents in parking lots. While towing I use it for lane changes and with non towing mirrors it’s a very dangerous issue that could cause an accident especially on the highway

Filed Jun 16, 2026 · Electrical, Engine · FL

I was driving at 45 mph and all of a sudden the screens went black as if the truck was turned off and the first thing I did was turn on the hazards because I didn’t know if the engine shut off either there was on coming traffic from both my front and back so I was scared my truck shut off 5-7 seconds later the screens turned back on and everything went back to normal but I was scared that my truck just turned off I made the dealership aware of this issue as soon as I pulled over and they said they had a busy schedule and that they would try to have a manager reach out to me to “squeeze me in” Mind you I just got my truck back from the dealership due to electrical issues and service yesterday and not even 24 hours later this happened so I am upset.

Filed Jun 10, 2026 · Electrical, Transmission · IL

Was driving down the road at 35 mph and the truck started to shake and the the transmission shifted really hard check engine light came on. Pulled over truck wouldn’t go into reverse and wouldn’t shift correctly. Had my truck towed home called the dealership they said I will need to have it towed in. Several days later the check engine light was off I took the truck around the block it was running okay. Drove it the next day it did the same thing shook really bad shifted hard and wouldn’t shift correctly my go I took reverse. Had it towed to the dealership. The dealership said it was the same problem they are having on other trucks with this same transmission truck is out of warranty and GM will not cover the cost to fix it.

Filed Jun 8, 2026 · Electrical · CA

The Telematics Control Module failed - it no longer functions. This affects the ability to use OnStar services, such as navigation assistance, but especially OnStar emergency services which would be needed in case of a vehicle crash or other emergency. OnStar no longer works due to the module failure. There is a backlog of at least several months, or longer, before a new module is available. Many people complain that the replacement module often fails within a few months,

Filed May 19, 2026 · Electrical, Engine · WI

Multiple times now my vehicle has had its engine locked up while driving at highway and regular uphill driving. Along with towing aswell. I have had it repaired multiple times and last time dealer wouldn’t tell me what happened because GM wouldn’t let them figure out what happened. Along with multiple attempts at fixing the transmission and brakes that are still on going issue. Same with the engine.