Electrical System Problems of GMC Sierra 1500 - part 2

The entire instrument panel is blacked out. I can not see the speed, how much fuel and no waring lights etc. The screen flashes between black and dark blue and there is a repetative "ding" that I have no idea what is caused from since I can not see any warning lights, etc. This puts me and others at risk due to not being able to see any functions for operation of the vehicle, the speed or any indicator lights of vehicle issues. The dealer has seen the truck, and informed me that this is a known problem and they would have to order parts. According to the service department, parts for replacement will be covered under warranty/recall and they have been on order. It has been 3 weeks and they have no knowledge of when the parts will be in to make repair. There was no warning on this problem, the panel just went out.

See all problems of the 2023 GMC Sierra 1500 🔎.

My 2019 GMC sierra denali shut off suddenly while I was stopped in traffic. The engine died, the steering wheel locked, and the dashboard displayed warning messages including “esc,” “power,” and another I didn’t catch. The truck would not restart despite attempts. The check engine light is now on. This happened without warning, and I had no prior mechanical issues. The vehicle is well maintained, garage-kept, and recently received a full service including oil change, brake work, and 75k-mile recommended service. I fear this is related to a known issue affecting other GMC engines under investigation for sudden power loss.

See all problems of the 2019 GMC Sierra 1500 🔎.

Subject: urgent safety complaint dear GMC customer service, I hope this message nds you well. I am formally reporting a serious safety issue with my GMC vehicle. The car has experienced multiple dangerous incidents due to likely electrical or software faults, losing power suddenly on two occasions while driving. This is especially concerning given the low mileage of 20,000 km and that the vehicle is still under warranty. Vehicle information: • model: GMC sierra sle, 2024 • VIN: [xxx] • current mileage: 20,000 km description of the problem & history: 1. First incident (at 3,000 km): o the vehicle completely shut down due to an electrical or system software issue while driving. O the vehicle was towed to the dealer and held for over two weeks for repairs. 2. Second incident (recently): o the vehicle again lost functionality; the gear was stuck in 1st gear, and I was unable to manually shift. O this occurred while driving, creating another unsafe situation. O the vehicle was again taken to the dealer for repair, and to date, I have not been informed of the root cause. Actions taken: the vehicle was brought to sarhan, uae (sharjah), al ghandi auto after the rst incident. Despite inspections and repair attempts, the issue has recurred, indicating it was not resolved. And I am prepared to provide photographic or video evidence if necessary. Additional context: • the vehicle is less than one year old and has been regularly serviced on time at authorized centers. The recurring issues strongly indicate an underlying reliability or manufacturing defect. Due to the severity and recurrence of these failures, I refuse any further repair attempts. I formally request either a full refund or a replacement vehicle, as this is unacceptable for a new car. Please acknowledge receipt of this complaint promptly and advise on the next steps for a swift resolution. Sincerely, [xxx] phone: [xxx] email: [xxx] location: sharjah, uae information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2024 GMC Sierra 1500 🔎.

Subject: urgent safety complaint dear GMC customer service, I hope this message finds you well. I am formally reporting a serious safety issue with my GMC vehicle. The car has experienced multiple dangerous incidents due to likely electrical or software faults, losing power suddenly on two occasions while driving. This is especially concerning given the low mileage of 20,000 km and that the vehicle is still under warranty. Vehicle information: •model: GMC sierra sle, 2024 •VIN: [xxx] •current mileage: 20,000 km description of the problem & history: 1. First incident (at 3,000 km): othe vehicle completely shut down due to an electrical or system software issue while driving. Othe vehicle was towed to the dealer and held for over two weeks for repairs. 2. Second incident (recently): othe vehicle again lost functionality; the gear was stuck in 1st gear, and I was unable to manually shift. Othis occurred while driving, creating another unsafe situation. Othe vehicle was again taken to the dealer for repair, and to date, I have not been informed of the root cause. Actions taken: the vehicle was brought to sarhan, uae (sharjah), al ghandi auto after the first incident. Despite inspections and repair attempts, the issue has recurred, indicating it was not resolved. And I am prepared to provide photographic or video evidence if necessary. Additional context: •the vehicle is less than one year old and has been regularly serviced on time at authorized centers. The recurring issues strongly indicate an underlying reliability or manufacturing defect. Due to the severity and recurrence of these failures, I refuse any further repair attempts. I formally request either a full refund or a replacement vehicle, as this is unacceptable for a new car. Please acknowledge receipt of this complaint promptly and advise on the next steps for a swift resolution. Sincerely, [xxx] phone: [xxx] email: [xxx] location: [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Loss of power steering. Loss of engine propulsion at high rates of speed. Engine would not start.

See all problems of the 2020 GMC Sierra 1500 🔎.

During a turn in the parking lot my vehicle would not allow me to turn something with traction control came up on the screen. The past few days the car got stuck at 0 rpms while driving and did not feel I had adequate power and other times has stalled.

See all problems of the 2014 GMC Sierra 1500 🔎.

Tailgate automatically opens while driving or in park tailgate fell down on its own and hit garage door causing a scratch scrape of paint vehicle only has 46000 miles this part should not have gone bad already and why was this year not on the recall should not have to pay for part and labor on a 3 yr old truck bad business. . . Onstar module went bad GMC truck only 3 yrs old should not have to pay for part and labor and installation on a new module this failure should be covered by gm as it there fualty part on a new vehicle bad business.

See all problems of the 2022 GMC Sierra 1500 🔎.

The vehicle consistently shuts off unexpectedly when trying to park or slow down, making it difficult to steer or control. The electric power steering stops working, especially when turning at low speeds.

See all problems of the 2017 GMC Sierra 1500 🔎.

Subject: urgent safety concern – widespread failure and nationwide backorder of onstar module (gm part no. 86803964) dear NHTSA, I am writing to formally raise a serious concern regarding a widespread and well-documented failure of the onstar module (gm part no. 86803964) in 2023 GMC sierra vehicles and potentially other gm models. I own a 2023 GMC sierra equipped with this module, which has failed, rendering my vehicle’s entire instrument cluster completely inoperative. All screens, including the digital gauges and essential driver information displays, are blacked out, leaving the vehicle in an unsafe and non-drivable condition. After contacting numerous gm dealerships across the country, I have discovered that this part is on national backorder, with over 4,000 units reportedly pending. I have also learned that the part number has been superseded multiple times, suggesting an ongoing and unresolved issue. To make matters worse, specmo is reported to be the sole refurbisher and distributor of replacement modules, further limiting availability and delaying resolution. This issue directly affects vehicle operability and driver safety. The inability to access critical information such as speed, fuel level, warning indicators, and system diagnostics significantly increases the risk of accidents and vehicle malfunctions. Given the scale of this issue and its impact on public safety, I urge general motors, relevant regulatory bodies, and consumer safety agencies to investigate this matter thoroughly. A recall, expedited solution, or broader communication to affected customers appears necessary at this stage.

On August 15th, 2025, I brought my new 2025 GMC Sierra 1500 denali to bill cramer gm dealership, 2251 w 23rd st, panama city, FL 32405, due to a complete loss of audio in the cabin. This affected the turn signals, radio, and critical safety alerts, including collision warnings and seatbelt reminders. Given the vehicle's high cost and its status as a new premium model, this malfunction was both disappointing and alarming, particularly due to its implications for safety. This occurs about every third time I drive the vehicle. The dealership retained my vehicle for over a week to diagnose and address the issue. I received an email stating that the service was complete and the truck was ready for pickup. However, upon arrival, a service technician informed me that they could not identify the cause of the audio failure and, consequently, no repairs were made. I was told the dealership would continue consulting with general motors' corporate engineers to determine the cause and solution.

While attempting to park my 2016 GMC Sierra 1500 at less than 5 mph, the steering wheel suddenly jerked on its own, the stabilitrak warning light turned on, the dashboard flickered, and the entire electrical system briefly shut off. The anti-theft light also came on during this incident. After restarting the vehicle, it temporarily returned to normal, but this kind of malfunction is extremely dangerous — especially if it were to happen while driving. It’s very upsetting that gm has not included the 2016 model year in the recall for this exact issue, even though many owners are clearly experiencing the same symptoms as the 2014 and 2015 trucks that were recalled. This needs to be addressed for safety and fairness.

See all problems of the 2016 GMC Sierra 1500 🔎.

Engine has had recall and still no remedy for it. Paint is chipping off and back locks stopped workingp.

The dealer is telling me there is a faulty engine coolant, flow control valve on this vehicle and multiple other people are having the same issue. The part is on backorder and takes months to arrive. They are telling me I can drive the vehicle, but it becomes a safety issue because the engine thinks it is overheating and goes into reduced acceleration mode, which can impact safely driving the vehicle. Pulling out in traffic and not being able to accelerate can be extremely dangerous.

Gm has has a known issue with a switch/sensor placed at the base of the shifter that causes the “shift to park” error message that prevents the electrical system from shutting down when the vehicle is physically in park and the engine is turned off, in fact, gm has issued a recall for several different models in which a “shift to park” error message is displayed because of the poor design; however, they continue to see the same issue occur but claim it is not a warranty issue (unless it occurs within 3 year/36,000 mile time frame. This is not an issue that can be caused by owner misuse, and I believe that gm should be held liable for repairs given that the issue is, and has been, known for several years now.

See all problems of the 2021 GMC Sierra 1500 🔎.

I’m contacting you regarding my 2019 GMC Sierra 1500 with the 5. 3l v8 engine. The vehicle is currently experiencing a cylinder 8 misfire (code p0308), accompanied by engine backfiring, ticking noise, and exhaust fumes inside the cabin. Additionally, the esc (electronic stability control) warning light is on, and performance is noticeably affected. To date, I have: •replaced all spark plugs and fuel injectors •verified proper ignition coil function •had an oil change on September 23, 2024, during which I reported early concerns about engine performance (shortly after the powertrain warranty expired) •had a transmission flush on March 17, 2025, in an attempt to resolve continued drivability issues despite these efforts, the issue persists. Given the known issues with afm lifters and camshaft wear on this engine, I suspect a mechanical failure related to that system.

Woke up one morning and the entire back seat, entire truck flooring was soaking wet. Got it to gerber collision in el reno, oklahoma. They said that the back window had a crack in it. My insurance said it is a mechanical issue on the sliding back glass and they do not cover such issue. Also want to turn in that the transmission in this truck had to be replaced two week prior to this incident. The truck only had 118,000 miles on it. Safe to say that this 10 point GMC diesel truck is a nightmare and the entire truck is a hazard. They need to take these truck off the market.

While exiting the highway and transitioning into a turn lane, my 2024 GMC sierra at4 (with 12,887 miles) suddenly and completely shut down without any prior warning. All vehicle systems—including electrical—failed simultaneously. This included the dashboard, steering assistance, and emergency lights, which significantly compromised my safety. I was unable to alert surrounding drivers or move the vehicle out of the traffic lane. There were multiple cars behind me, and I was placed in an extremely unsafe situation due to the sudden loss of control and inability to signal or restart the vehicle. I immediately contacted emergency services, and a police officer arrived approximately 10 minutes later to assist. Roadside assistance later pulled diagnostic code p0016 from the truck’s computer. I have since learned that this code corresponds to a known engine timing defect and is the subject of a recent GMC recall issued just days prior to the incident. The failure occurred without any warning lights, messages, or symptoms beforehand. The vehicle is now with a GMC dealer and is available for inspection upon request. To my knowledge, the issue has not yet been independently confirmed, but I believe it is directly connected to the recalled component.

2023 GMC 1500 sierra denali ultimate tailgate opens without being commanded. This has happened approximately three (3 ) times in the last two months while being driven with the most recent incident occurring today, 04/27/2025. There are no warning lights indicating when a tailgate opens while the vehicle is being driven.

Hello, I wish to report this injury / incident with the failure of the power running boards on my 2022 GMC Sierra 1500 denali limited. There are no warning lamps on the vehicle. The truck is regularly serviced and inspected. The truck recently had a multi-point inspection at the dealer. The power running boards started to come out after I opened my door, as I stepped down, the steps retracted and went back in causing me to fall hard on the ground and smash my knees. Driver and passenger sides are now acting up, even with the truck parked and locked, passenger side wants to go in and out on its own and sometimes extends to the tire. As I researched this problem, I found out that others have had similar issues with the same vehicles that have these power running boards. I removed the fuse now to prevent further injuries.

Driving on hwy at 60 mph on regular day going home and trucks all off sudden started rattling and engine knocking very loud , engine started crashing loosing power , has to merge to side of road and call tow truck.

Tailgate opened while in park. Closed garage door. Came back out to leave and garage door got caught on tailgate that had released open on its own causing body damage.

Just purchased this vehicle, at 84000 miles had engine failure and electrical issues while traveling down interstate with my family. Lost power steering and all warning lights popped up. Safely exited busy interstate -- avoided major accident. This engine should have been included in the recent GMC recall - after a diagnostic $7000. 00 plus to fix. Unsafe engine issue!! please help the consumer!!.

Esc error parking break not releasing dashboard lights started flashing check engine light came on.

I had engine failure two weeks after a schedule maintenance that included a tune up. When the engine failed all the components made the vehicle impossible to operate much less bring to a stop safely. I had to get the vehicle towed to the dealer. The dealer confirmed that the engine (6. 2 v8) has a known documented issue. The vehicle is at my dealer with the engine being disassembled. There weren't any warnings as I stayed on the maintenance schedule that the dealer mapped out since my purchase. The problem began 4/12/2025. After researching the issue I found this online. That is how I found your web site. . Read more...

I was about 45 miles or so from home on [xxx]. As I left a business my truck went about 100 feet and the engine stopped working . No warning. Truck was towed to a gm dealer in wilmington IL. It was determined the cause was due to the wiring from the engine ecm that was run over the top of a very sharp plastic mounting bracket for the ecm. The wire had been cut because of the way this was done at the factory. In addition the fuel pump also needed to be replaced . At the time of this, the truck had 39,140 miles on it. I had no warning this was about to happen. No check engine light went on , etc. Most of my route home is on the highway . Had this not happened on a side street , I would have been involved in an accident. I ended up paying $865. 42 plus towing for this repair I should not be paying for. The people at the gm dealer told me this has been happening on numerous gm pick up trucks. This is not a maintenance issue or an isolated case. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Transmission keeps skipping missing gears and hard shifting, as well as jolting forward. When attempting to switch lanes vehicle transmission skips. When being placed from park to drive or any other gear vehicle transmission hard shifts. Vehicle radio and screen shut off intermittently every 30 to 45 minutes. Vehicle screen goes blank and black and resets itself after 30 to 45 minutes.

Total loss of power while in motion on highway going 70 when first happened, got video of problem for shop while going lower speeds. Truck will loose all power the dash will turn off and then turn back on sometimes the engine will cut out completely.

I just left the gas station from getting a beverage, I got onto the interstate and had gone roughly about 3 miles before setting super cruise a few minutes after that the interstate takes a turn to the left with an exit on the right. Slightly right as I was just getting into the turn my engine shutoff and or died making my truck uncontrollable causing me to drive off the interstate into some small trees between the exit and the interstate. I was not injured and no other vehicles were involved. My truck is currently at the insurances storage yard and they care claiming it to be totaled. I have contacted gm and filled a claim however they are saying they aren’t responsible because the insurance company has my truck. I feel like regardless of who has my vehicle the manufacturer should be responsible if the issue pertains to a specific recall that has already been issued 2 weeks after my accident. I have contacted several lawyers but since I wasn’t injured they aren’t interested in taking my case. My concern is I’m getting screwed over financially because my truck was only a year old and now my insurance is going to be crazy expensive when the manufacturer should be the one taking responsibility for this and not myself.

Engine has seized twice, completely shutting down without electrical power or brakes. The vehicle also shut down in an intersection (no power, brakes, flashers). I was able to pull to the side on the 2 engine seizures but not during the electrical shutdown at the intersection in the turn lane. The engine was replaced the first time by quality GMC in albuquerque, nm. The 2nd engine is being replaced by diamond GMC in palmdale, CA. Warning lamps on the 1st engine seizure was tire pressure warning. The electrical shutdown was forward collision warning, emergency braking, etc. The 2nd engine seizure said something about engine needed to be restarted.

Rear defroster failure. The rear defroster was turned on causing smoke to appear from the power sliding rear window, then the rear window shattered causing glass to fly into the backseat and truck bed.

Tailgate comes unlatched and tailgate came down multiple times in motion and parked. Safety concerns loosing cargo and causing accidents. My vehicle is not included in the recall and dealer cannot help only repair for 146. 80. I feel that my vehicle should be included to the already existing recall and reimbursement for repair.

P0521 has been addressed/replaced almost nine (9) times. “low oil pressure-stop engine” is another one that is not completely functional. The truck is using oil but we cant find evidence of leakage. Services performed at dealership or certified shop. Troubleshooting was performed, im told. I cant vouch for the quality of the workmanship. This should not be an issue at this mileage 100,100 ohe hundred thousand miles and oil components going bad is not good. GMC has sold me a truck that needs a new engine component. Please help. Thanks j.

See all problems of the 2012 GMC Sierra 1500 🔎.

While driving my truck and making low speed turns the dashboard (including center console) cuts off, along with my power steering. The truck has also shut off completely making u-turns causing me to almost crash. This also happened while driving around 60mph on the freeway, the entire dashboard went out, loss of steering, and truck shut off, almost causing an accident. When it does happen, it will cut out in 1 second intervals and steering will work again for 2 seconds then cut out again for 1 second, this causing me to stall. There are no check engine lights, or service lights that stay on. However, I will get a message stating: you are memory setting 3 in the system (wording may be different). In some cases the stabilitrak light will come on, the park assist warning stating it shut off comes on dash, and trailer break. I have a full service aul warranty and had vehicle checked at certified dealership and no codes were recorded. I replaced battery and the problem is still happening. This is unsafe and should be part of the previous recall as my symptoms are the same exact symptoms as the other 2018 recall.

See all problems of the 2018 GMC Sierra 1500 🔎.

Engine light came on, performance rough at various speeds / conditions, and smelled like burning and strong urea smell. Gm maintenance identified a failed def injector / replaced.

I was driving about 45 mph when the vehicle started to brake on its own. Message center said "brake failure max speed 62 mph". I had to move the vehicle, so I continued forward. It was still trying to self-brake, I decided to stop and turn ignition off so computers could re-set but I had no brakes. I had to stand on brake pedal to get it stopped. Turned ignition off and restarted. The problem was gone, but it happened again 2 weeks later. Took to dealership where purchased and they said it needed a computed recalibration. Something I didn't know about. They charged me $200 to recalibrate the computer. My issue is the danger of not having brakes, not the $200. How many similar vehicles could this happen to?.