Electrical System Problems of GMC Sierra 1500 - part 1

The vehicle lost power after sitting for a week. Start up with a jump, but the battery doesn't hold a charge after that.

The contact owns a 2021 GMC Sierra 1500. The contact stated that while the vehicle was parked, the battery charge indicator to zero. The vehicle lost motive power, and the vehicle was unable to exceed 30 mph while driving. The vehicle was driven in limp mode. The battery saver mode message was displayed before and during the failure. The vehicle then failed to restart. The vehicle had been repaired a year prior to the failure. The contact's blood pressure became elevated due to the issue. The failure mileage was approximately 98,000.

See all problems of the 2021 GMC Sierra 1500 🔎.

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.

See all problems of the 2022 GMC Sierra 1500 🔎.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 35 mph, the vehicle lost power steering functionality. The "service power steering" message was displayed and esp warning light was illuminated. The dealer was contacted and diagnosed the vehicle with a short circuit in the module used to control the rack-and-pinion system, which had blown the fuse. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 83,000.

See all problems of the 2023 GMC Sierra 1500 🔎.

Power steering seems to be lost for a second or two at low speeds turning. Happens multiple times a day.

See all problems of the 2015 GMC Sierra 1500 🔎.

When updating the vehicle as prompted by the entrainment system the next day when attempting to start the vehicle it did not start. Vehicle had to be jumped then 6 warning lights came on and disappeared shortly after driving.

See all problems of the 2025 GMC Sierra 1500 🔎.

The front grille trim moulding failed and flew off on the highway. Also, the forward collision light on vehicle from the front camera not working and needing to be replaced.

600 miles and 3 months out of warranty the dash completely disappeared. Dealership says the costs is in excess of $1600 to fix the issue. I have researched this and it is a common problem with these trucks and it needs an instrument cluster. Given the fact that GMC controls the panels to these trucks I feel certain that this is actually caused by them and should be fixed under a recall. We have owned the truck 6 months. We are not able to see the speed limit, gas limits or anything on the dash any longer.

There was a mass recall on 2018 GMC sierras to due to a faulty break pump vaccum. We are experiencing the same problems but for some reason were not included in the recall. We were told to reach out on here as others have to see what can be done as this is a saftety hazard.

See all problems of the 2018 GMC Sierra 1500 🔎.

My vehicle has experienced repeated and unresolved electrical system failures and unexpected loss of power steering assist. The problem involves multiple warning lights, module communication faults, drivability issues, and simultaneous malfunctions affecting systems including power steering, traction control, transmission, four-wheel drive, and other electronic controls. Repair records, diagnostic information, and videos documenting the failures are available for inspection upon request. The most serious incident occurred on August 23, 2026, when the power steering failed unexpectedly while I was driving. The sudden loss of steering assist made the vehicle difficult to control and nearly resulted in a collision with an oncoming vehicle. The failure created a significant safety risk because it impaired my ability to safely steer and control the vehicle. The condition has occurred multiple times over several months and has resulted in repeated dealership visits. Repairs have included replacement an hvac controller, but the failures have continued. The vehicle has been inspected multiple times by an authorized dealer, and the manufacturer has been notified through an open support case. As of the most recent repair visit, no confirmed root cause or permanent repair had been identified, and the dealership was still working with engineering support to diagnose the issue. Prior to and during these failures, numerous warning lamps and service messages appeared, including warnings related to power steering, traction control, transmission, four-wheel drive, trailer brake system, steering column lock, and tire monitoring systems. In some incidents, the vehicle entered reduced-performance mode. These warning messages first appeared in November 2025 and have continued intermittently despite multiple repair attempts. The recurring and unresolved loss of power steering assist while driving creates an ongoing risk of crash or injury.

See all problems of the 2024 GMC Sierra 1500 🔎.

Dashboard keeps returning to aljarir type writing. We bought it with american english but won't stay in english. Monday will be 30 day and I believe the dealer is ghosting me. Y'all have any ideas how to reset the dashboard without replacing the radio??? closest answer I was given.

The contact owns a 2026 GMC Sierra 1500. The contact stated that while driving approximately 60 mph, the transmission unexpectedly downshifted and the vehicle decelerated to 10 mph. No warning light was illuminated. The contact pulled over to the shoulder of the road, and the vehicle was towed to a local dealer. The vehicle remained with the dealer for additional diagnostic tests and unknown recurring failure codes. In addition, the contact stated that the failure worsened and occurred while his wife, sister-in-law, niece, and child were present inside the vehicle. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 7,500.

This vehicle has water intrusion for the power steering harness. The system went out one day. Vehicle has 40k miles on it. I bought it less than a year ago as a used vehicle with 30k miles on it. Less than a year later I end up with a $6,500 bill for it.

The contact owns a 2021 GMC Sierra 1500. The contact stated that while driving approximately 25 mph near the residence with the contact's daughter as a passenger, the vehicle experienced a complete loss of motive power when depressing the accelerator pedal. Several unspecified warning lights illuminated. The contact and the passenger pushed the vehicle to the residence. The vehicle was towed to an independent mechanic, where it was diagnosed that the electrical system experienced a severe power loss and the electrical modules were damaged. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 89,000.

The contact owns a 2026 GMC Sierra 1500. The contact stated that while driving 35 mph, the vehicle stalled. Additionally, the wheels locked up, and transmission made a screeching sound. The contact was able to restart vehicle after approximately 5 minutes. The failure was recurrent. The vehicle was towed to the dealer, but the dealer was unable to duplicate the failure. The dealer replaced an unstated module that was damaged during the failure. The manufacturer was contacted by phone and was made aware of the failure. The failure mileage was approximately 6,000.

13 unresolved problem codes relating to hard engine starting,rough engine running,vehicle initiating safe mode operation, upon a highway trip. P0016 engine code detected and onstar messaged for immediate service. No resolution at dealership , after resetting codes an additional 9 are active / pending at 2nd dealership visit. Abnormal engine operation since , dealership advises a hard failure has to occur before a resolution can be instituted. Similar advice from GMC direct phone call in help line.

I was driving on 96 w. In slow traffic on the freeway when the vehicle put itself in neutral and shut off.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the instrument panel shut off without warning. The vehicle was restarted, and the panel remained blank with white streaks across the screen. The vehicle was towed to a dealer, and the dealer associated the failure with the instrument cluster. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 34,500.

My 2023 gnc Sierra 1500 has experienced a recurring electrical and safety-related malfunction on multiple occasions while driving. The dashboard and warning lights intermittently flash on, and off and numerous warning messages appear simultaneously. During previous occurrences, warnings included power steering service, safety restraint system, check engine and transmission related messages, including a message instructing me to pull over and shut the vehicle off. During one occurrence, the electric power steering assist stopped working while I was driving. The vehicle was taken to an authorized GMC dealership multiple times while under the factory warranty. The dealer replaced the brake system control module and performed vehicle-wide software/programming updates. When the problem continued, the dealer contacted gm technical assistance. The dealer subsequently diagnosed an intermittent open circuit involving the electric power steering rack-and-pinion/steering gear assembly and replaced the complete steering gear assembly. Despite these repairs, the malfunction has occurred again, during another occurrence while driving on the freeway, the dashboard flashed on and off and multiple warning lights and messages repeatedly appeared, similar to the condition that occurred before the steering gear was replaced. The vehicle currently has approximately 55,000 miles. The condition remains intermittent despite multiple repair attempts. I am concerned that this recuring electrical or vehicle communication failure could again cause loss of power steering assistance or affect other safety-related vehicle systems while driving.

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.

What component or system failed or malfunctioned, and is it available for inspection upon request? the truck has lost power unexpectedly while driving, and lately I've also noticed some lag when I accelerate. The truck is available to be inspected. How was your safety or the safety of others put at risk? the truck suddenly lost power while I was driving and told me to restart the vehicle. Losing power unexpectedly almost caused me to get stuck in an intersection and could have caused an accident in a busy shopping center. Has the problem been reproduced or confirmed by a dealer or independent service center? no. I took it to the GMC dealership after the second time it happened, but they couldn't get it to do it again and said there were no codes showing. They told me to bring it back if it happens a third time. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? yes. I took it to the GMC dealership to have it checked after the second power-loss issue happened. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? when it lost power, the truck prompted me to restart the vehicle. I have also recently started noticing some lag when accelerating and starting the vehicle. There was no warning before it happened.

I pulled up to a local store and parked. Just as I was getting out I saw smoke coming from the upper seatbelt area of the rear drivers side seat inside the cab. I jumped in back to see if there was a fire. As I was trying to pull out the top cushions of the interior roof, trying to locate a possible fire, the rear driver-side window suddenly "exploded" - broke in a web pattern across the entire window. I then broke out the center of the glass in case a fire started. I could smell a burning scent. The, suddenly the rear passenger-side window exploded in the same web pattern across that entire window. When my wife arrived to pick me up she could also smell the scent of burning wire. After researching the internet for this issue, we found out that this is a known issue. We discovered at least 6 websites describing this exact issue - one being a gm customer satisfaction program #n192265660 dated January 2020. Apparently the component that has been determined to have failed is the rear window defrost (particularly in models with an electronic sliding rear center window) overheats and causes the smoke and the window breakage. After our truck being at the dealership for approximately 1 month while gmac supposedly researched the issue, we received word today verbally (Aug 27, 2026) that they declare this issue is not a manufacturer's defect, and they will not cover the repairs. We have requested written confirmation and haven't yet received it. Not only do we currently have the original warranty on this vehicle, we also purchased the extended warranty for the vehicle. The vehicle was inspected by the dealership from which we purchased the vehicle and they stated they couldn't find any issue that would create the damages that the vehicle incurred. Prior to the incident there were no warning lamps or symptoms of any problem.

6 month old, 9,000 miles 2026 Sierra 1500 with duramax 3 liter suffered an engine control module failure 4 hours into a 12. 5 hour drive home from family vacation. First a transmission service warning flashed, then an emissions system failure with a forced speed reduction warning. This happened with two children and a dog in the vehicle. Onstar did diagnotics and said I had to see a dealer. Fortunately one was nearby and they determined the engine control module needed to be replaced--but I was 8. 5 hours' drive from home with kids and dog and would have had to stay for 2-4 days awaiting parts and repair. I traded the truck at the dealer for a new vehicle and drove that home. This was a major safety concern traveling with children and a dog on a nearly 100 degree day. And it was a brand new vehicle.

At approximately 2 years, 47,000 miles I received a message that I needed to service the transmission soon. I then got a message "trailer brakes disabled service required" and another "service transmission now unable to shift soon". I brought the vehicle into my closest gm dealer and they said it is a faulty shift control lever. These are known to have a fault from the factory, but since I am outside of the 36,000 bumper to bumper, they will not cover the cost. It took about 2 months for the part to come in as it was on back order, and now they want $1000 to replace it.

The contact owns a 2026 GMC Sierra 1500. The contact stated that while at a stop light, the engine shut off to save fuel, but after releasing the brake pedal, the engine failed to restart. The contact shifted to park, and the engine restarted. The contact stated that the failure had occurred on several occasions after the fuel saving feature was deactivated. Additionally, the contact stated that the failure had occurred while slowing down and driving over a railroad track and hauling a trailer. The vehicle was taken to the local dealer on several occasions, but the failure was not duplicated. The manufacturer was notified of the failure. The failure mileage was 4,300.

Interior electrical system / center console wireless charging pad the plastic housing surrounding the factory wireless phone charging pad in the center console has visibly melted and deformed. The damage is localized to the area directly above/around the induction charging coil, with no similar heat damage to adjacent console plastics, indicating the wireless charging module itself is the heat source. I stopped using this charging location upon noticing the deformation. This appears to be a component overheating defect that poses a potential fire risk if left in continued use. I am not aware of an existing recall or technical service bulletin covering physical melting of this component (existing gm bulletins address intermittent charging function only, not heat damage to plastic). Requesting this be documented and investigated.

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).

I own a 2021 GMC sierra at4 3. 0l duramax (VIN [xxx]). The vehicle has codes p1098 (coolant control valve performance) and p129f which coincides with the first code. My dealer believes this is consistent with an engine coolant control valve failure. I understand special coverage xxx exists for this issue, but I've been told my VIN is not included. My truck has the exact engine, symptoms, and diagnostic codes addressed by special coverage n252508341, but my VIN is excluded. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2026 GMC Sierra 1500. The contact stated that intermittently there was no sound while the turn signals were activated, and the radio and incoming calls failed to be audible. The issue often lasted all day or for an hour or two before returning to normal. The contact associated the failure gm technical service bulletin: pit6406 (or pit6406f), but the dealer stated the vehicle was not included in the bulletin and refused further diagnostic tests. The vehicle was taken to a dealer to reprogram the audio control module (acm) because the software was outdated, despite the vehicle being brand new. The reprogramming was completed; however, the failure was not resolved. The manufacturer was notified of the issue. The failure mileage was 3,657.

Truck shut off and would not turn back on. Negative battery cable so hot it burned skin off. Would not start, tried to start clicking sound, radio blipped for a moment.

See all problems of the 2014 GMC Sierra 1500 🔎.

No sound at different times. No way to reset issue. TSB issued may 14, 2026 for known issue. As of July 6, no estimate on repair. Blinkers make no sounds, onstar can call but you cannot hear them. In event of accident, no communication.

While driving at highway speed, my 2025 GMC sierra suddenly began slowing down without warning and lost propulsion. When I pressed the accelerator, there was no acceleration response. The vehicle felt like it was braking or dragging instead of accelerating, creating a serious crash risk in traffic. A warning message appeared instructing me to “put in neutral and restart truck. ” I followed the instruction, but the vehicle would not restart. It sounded like it was attempting to start, but it would not start normally. A “service esc” warning also appeared. The vehicle was towed by aaa to a GMC dealership and remains available for inspection. The dealership provided a diagnostic trouble code report showing active codes: c2a07 engine control module indicated torque signal malfunction; u0101 lost communication with transmission control module; u0131 lost communication with power steering control module; u0140 lost communication with body control module; u0146 lost communication with central gateway module; u160f lost communication with brake system control module 1 on can bus 1; u1611 lost communication with engine control module on can bus 2; and u3003 battery voltage circuit voltage below threshold. The vehicle had approximately 22,000 miles at the time of the incident. The failure has not been repaired at the time of this complaint. The concern appears to involve a safety-related electrical, propulsion, powertrain, esc/brake, and module communication failure that caused sudden loss of propulsion, no acceleration response, warning messages, and a no-start condition.

I am retired and have always bought gm vehicles which are taken care of with required oil changes etc. This one I have only owned 25,000 mi each year (I have owned two years). So, when purchased it has high 50,000 miles not sure of exact, and it has only been driven 2 years. When calling escalation at gm, they act as though it doesn't matter and too bad. 110,000 miles and the truck needs a new motor. This is what we are told and 10,000 more than the initial 1500 to tear it down. This truck is not broken due to us, this is a problem with the manufacturer and the responsibility needs to be addressed. My husband has a heart issue and he almost didn't make it home. I'm not accepting that nothing be done, since next we need a lawyer and a media appointment. This isn't right when you see thousands of people with the same GMC sierra trucks online with complaints of the same valve and motor issues. This needs completely replaced and not by a customer, by the manufacturer. How can 1500 people new wrong on one sight stating the same as we have had. This person who is responsble for reporting and making sure we are safe needs to be fired. I am writing my representatives, senators etc to let them know this is going on. No one should pay for the mistakes of bad engineering. Period.

See all problems of the 2019 GMC Sierra 1500 🔎.

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.

My 2015 GMC Sierra 1500 recently started having all the symptoms under gm internal recall number 18289. I lose my power steering briefly and the electronics turn off momentarily. I lose dash, ac, radio and gps. It comes back on within a second or two and only does this during low speed turning. I ran my VIN but it does not show under this recall despite having the correct make/model/year. It is currently at the shop because it isn't safe to drive and I was hoping I could get a reimbursement for the repairs. Nhtsa campaign number: 18v586000 (gm's internal number: 18289).