2023 Chevrolet Tahoe Electrical System Problems

When I started my car at home, all of the dash warning lights came on, one after another. I put the car in reverse and started backing out of my driveway. I tried to stop but there were NO BRAKES! I slowly pulled back into my driveway and turned the car off. I had to take off work that day because I didn't dare to drive the car. The next day I started the car up and the check engine light was on. Luckily, I had brakes and I could go to work. Now, a day later, my engine light is not on. I made an appointment at the dealership. They can't get me in until mid February so I'm stuck with this problem, not knowing if the brakes are going to fail while driving. Oddly enough, when talking to a co-worker who has a 2023 Chevrolet Suburban, she recently had the same exact problem with her car. She has an appointment scheduled as well. I also read a complaint on this website that had identical problems. This car only has 8500 miles on it. It's still new! Someone is going to be killed or hurt very badly if this ever happens while driving. Please look into this.

As the owner of a 2023 Chevrolet Tahoe, I am currently experiencing persistent issues with the instrument cluster going dark and a severely malfunctioning GM 6.2L L87 engine. In November of the previous year, I encountered a sudden and alarming loss of engine power while traveling on a multilane highway at a speed of 70 mph. I successfully maneuvered the vehicle to a narrow shoulder, where I remained, accompanied by a Highway Patrol officer, for over three hours until a tow truck arrived. The GM certified dealership informed me that the engine was seized. The mechanics were unable to start or manually turn the engine. Upon removal of the engine’s oil pan, they found metal fragments in the oil. After having undergone an engine recall “fix” three months earlier, which included an inspection and oil service change to a more viscous 0W - 40, a new oil filter, and a new filler cap; in November, my engine failed and was replaced with a new 6.2L L87 engine. Initially, I was pleased with the repair, but I have since lost confidence that my car is safe after the new engine began exhibiting symptoms of a pending failure. The Tahoe hesitates on acceleration when merging with highway traffic, the engine dies when decelerating, the check engine light flashes at highway speeds, and the instrument cluster turns off at random. The vehicle that has been outfitted with a brand new engine is currently at the Chevrolet dealership; however, just like in August of 2025 during the Recall inspection, the mechanics there were unable to find any problems with their work or the new engine. They simply erased the stored P0300 engine diagnostics codes and ignored my evidence video, which showed the check engine light blinking at highway speeds. Despite the repair attempts, the issues have not been resolved, and the vehicle continues to pose a safety hazard.

I purchased a 2023 Chevy Tahoe in Oct 2025. Since then, I have been trying to figure out how to set up the myChevrolet app. The OnStar button doesn’t work so I called OnStar. After multiple calls, they told me that the account is linked to the previous owner and can’t be transferred because of a faulty telematics communications module. The faulty module is also causing the clock to run slow, which indicates battery drain is beginning. The OnStar module failure poses a huge safety and privacy risk. Safety concerns include battery failure that can cause me to be stranded and the fact that the previous owner has the ability to start my vehicle at any time, even while parked in my garage posing a risk to my family’s health/life with trapped carbon monoxide building up. Privacy concerns include the previous owners ability to track my vehicle, lock and unlock doors, access my contacts, call log, location, and more. This is a significant risk. The dealership should not have sold me a vehicle with a defective module without repairing it and now refuse to fix it. This should have been included in GMs factory recall for 2023 Tahoe TCU’s or a new recall should be issued. Consumers should not bear the burden to fix a widely known safety, health, and privacy risk.

On several occasions while operating the vehicle during inclement weather the windshield wipers intermittently stopped working. Restarting the vehicle several times did not remedy the problem. Once the vehicle was parked for a while the wipers started working again. This vehicle has been to the dealership regarding this issue numerous times and sent back in service with a message from the technician, could not duplicate the complaint.

The engine in my vehicle has experiences major failures in valve flap adjusters, multiple valve failures, valve cover issues, and over consumption of oil by over a quarter in a week and a half of average driving. My safety was put at risk because the engine failure resulted in traction control malfunctions while going 70 mph up hill on a major interstate. This led to extreme shaking which did not stop until slowing down to below 15 mph. Luckily I was a mile from an exit and was able to coast off the road quickly; it was decent enough weather, and I was less than 5 miles from my destination so I could creep between 15-30 mph to not exacerbate traction control alarms. That slow mph did back up traffic behind me. As far as I am aware the problem was likely reproduced by the dealership service tech, which led to their recommendation to replace the whole engine. They do not consider it to be covered by any warranty anymore. The engine may be in their possession still, but I am unsure. There were zero warning lights/prompts from the vehicle that anything was going wrong prior to the shaking and loss of traction control at high speed. The dealer service team suggested that my high miles led to the engine failure. I do highway driving with it and have followed all manufacturer recommendations for oil changes, and even more frequent changes with OEM oil since about 80k miles. I do not think this engine should have failed at this amount of mileage. I made note of oil consumption around 95k miles and measured oil loss regularly. It was a little less than a quart every 2K to 3k miles which manufacturer states is within spec so I would top off oil. A year ago it had a TCM wire replaced after burning in half. 3 weeks ago I also had to replace the entire turbo. The wire rendered my car unable to go in gear. The turbo failure put me into limp mode. I think the turbo failure was a sign of a deeper issue that went undiagnosed.

At a stoplight vehicle wanted to stall out Motor was shaking

The sounds from the radio works only 10% of the time, the radio sound also is what produces the turn signal blinking sound. Additionally there is a scratching noise coming from the speakers almost like a bad signal from the tuner. This is very distracting and a safety concern, especially when the turn signal does not audible make a sound. When I call Chevy they say it will be $300 to diagnose, and if you look online this is a known issue amongst newer model Chevy.

Repeated issues with the infotainment system had to be replaced 3 times to date. The motor blew at 49,000 miles 3 weeks ago. The replacement motor is on back order and it is very difficult to get a loaner vehicle, not to mention having to make a payment on the vehicle that I don’t have to use.

When we first purchased our 2023 Tahoe the engine was making a tiking noise we took it back and they told us it was because it was brand new time past engine always needs oil when we drive it u have to press gas pedal it also has electrical problems back camera turns on and off . Brake sensors don’t work . I almost had a bad car accident due to the engine that it had stop because it said reduced power while I was on a highway . I lost my son 3 yrs ago in a car wreck . I don’t want no more accidents so please help me figure some out with my Tahoe . I also went to dealership and they directed me to a manager . Manager never help never called back or nothing we bought truck at friendly Chevrolet

Traveling on the interstate late at night in the winter with my family, which includes small children, a clicking noise began but then went away. No diagnostic lamps came on, everything seemed fine, vehicle responded appropriately. Moments later, on a remote stretch of interstate, we lost power and the engine shut down. The vehicle would not turn back on. We were stranded in the dark on a freezing night.

While driving, without warning my brake system failed and vehicle did not stop when I applied my foot on the breaks. In addition to while driving up a steep incline the engine failed as I was actively applying my foot to the gas pedal causing vehicle to roll backwards. Most importantly i do not feel confident using this vehicle any further knowing that the brakes are Not operating as they should, risking my life and my children’s life is nonnegotiable. Someone help please.

On several occasions while operating the vehicle during inclement weather the windshield wipers intermittently stopped working. Restarting the vehicle several times did not remedy the problem. Once the vehicle was parked for a while the wipers started working again. This vehicle has been to the dealership regarding this issue numerous times and sent back in service with a message from the technician, could not duplicate the complaint.

Onstar Telematics Module failure. Part is on backorder with no ETA. This module failure removes the navigation, Onstar services including safety notifications, clocks can stop working, Android auto/Apple Carplay services are not functional or intermittently working. My vehicle has stalled out at a red light. GM is refusing to cover the replacement saying it is out of the bumper to bumper to warranty but they have so many of these needing replaced they can't say when they will get the parts. Module has been confirmed dead by a mechanic at a private shop and by the dealership. GM states this is under the bumper to bumper to warranty even though it controls parts of the power train and should be covered under powertrain warranty as well.

The contact owns a 2023 Chevrolet Tahoe. The contact stated that soon after purchasing the vehicle, the vehicle's lane assist feature would be active with no other vehicles in the contact vehicle's vicinity. The contact also stated that multiple other electrical defects would occur such as the backup camera activating while in drive(D), the instrument panel intermittently going blank, and various other defects. The vehicle was taken to the dealer on multiple occasions where they failed to duplicate the failure. The contact then stated that while driving at 80 MPH, the instrument panel went blank. The contact attempted to pull the vehicle over; however, an unknown turn-off of the vehicle warning message appeared on the instrument panel as a warning chime was also emitted from the vehicle. The contact then stated that the vehicle then came to an abrupt stop where the engine and brakes seized, while traveling at 34 MPH. Due to the failure, the contact was taken to the hospital where they were treated for whiplash, inflammation in the neck and spine, 7 bulging discs in the spine, and pain in various parts of the body. The vehicle was towed to a dealer where it was diagnosed with engine failure; the vehicle's engine was replaced under warranty. Despite the repair, the contact refused to take possession of the vehicle as they did not feel safe driving the vehicle. The manufacturer was notified of the failure and a case was filed; the contact had yet to receive any assistance from the manufacturer. The failure mileage was approximately 15,000.

While driving on the highway at high speed, my vehicle suddenly shut down and went into neutral. After a few minutes of trying to start it, it started and I was able to drive it home. The following day, on my way to the dealership for an inspection, while driving on a busy street, it shut down again. This time, it wouldn't restart, and I had to call the police and a tow truck to have it towed to the dealership. I was freaking out as I had my daughter inside the car with me. At that point, the vehicle had around 26,000 miles. The dealership inspected it and determined the engine was faulty and needed to be replaced. After the engine was replaced, the vehicle seemed fine, but recently, I've been experiencing problems again. The car struggles to start when it shuts off during stops, using the auto shut-off feature, and there's an intermittent hard shifting issue. It feels like the engine is failing again or maybe the transmission, but I've been told that unless the dealership can replicate the issue when I bring it in, they can't do anything. I'm concerned about being stranded on the road again, especially since my daughter is always with me. The vehicle’s engine and mechanical components don’t seem reliable, and I no longer feel safe driving it. However, I have no other option as it is my daily car for work and everything else. I’ve asked for an extended warranty from the dealership after the engine replacement, but I was told GMC doesn’t offer one for this issue. I’ve seen others on social media report similar problems, and I want to share my experience, as I’m just one of many customers facing this issue.

I've had my 2023 Tahoe for 15 months, purchased Dec. 2023 Issue #1. Dash message on start up " Restraint System Needs Service". I noticed small lights overhead (buttons for tail gate, sun roof, reading lamps) were off. I pressed some of them, and dash message went away, and lights came on. Everything worked fine. I've narrowed it down to the passenger side reading light. When dash warning comes on, I press reading light, and whalla! all works fine. This has happened about 6 times over the last year. Issue #2. After driving many hours (9 hr drive, then a 2hr drive, then 4hr hr drive on different days/nights) in rain with wipers in auto mode, using defrost on and off as needed. Suddenly, wipers stop working as well as headlights in auto mode! Scary. Pulled over and waited with engine off. Restarted and still nothing. I was able to use headlights in full ON mode. I turned the wiper switch all the way from top-pulse to the full-on 4-6 times really quick back and forth, and like magic, everything worked again! This has happened 3 times in the last 2 months (always during several hours of rainy weather driving). Dealer says they can't fix what they can't witness. I suppose my only recourse is to video tape it and then show dealership.

I am writing to express my deep frustration with a recent issue I have encountered with my brand new 2023 Chevrolet Tahoe (VIN: [XXX] ). Following the expiration of my complimentary OnStar subscription, I discovered that all voice-activated and Bluetooth functions are inoperable unless I purchase a separate wireless plan at $25 / month which I cannot afford. This is a stark contrast to my previous six Chevrolets, all of which allowed hands-free phone calls and navigation functionalities via Bluetooth without requiring an additional subscription. I have contacted two Chevrolet dealerships, spoken with numerous employees, and reached out to OnStar, spending a total of nearly two hours on the phone attempting to resolve this issue. Unfortunately, no solution has been found. My primary concern is safety. Manually operating my phone while driving is unacceptable, and in some states illegal, putting myself and others at risk. Additionally, the lack of hands-free navigation significantly detracts from the convenience and value of the vehicle. While I appreciate the technological advancements in the 2023 Tahoe, the current system feels restrictive and potentially detrimental to customer safety. I understand the potential for additional revenue through data plans, but I believe the potential for unsafe driving and safety concerns outweighs this consideration. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Bought new and there was a brake pad sensor message immediately that we took it to the dealer several times for and nothing was done other than clearing the code and giving it back. Was in accident 1/24 and it was found that there was a frayed/damaged wire in the break module and break pad sensor that I feel could have led to the accident

This is a brand new vehicle with a known problem to GM yet they keep selling them and admit they cannot fix it. The audio system, including the blinker sound, is warning systems and hands free phone capabilities do not work properly, if at all. This is a distraction while driving - especially when it comes to phone use. It is deceptive and putting public safety at risk, not to mention costing consumers thousands of dollars. Their built in safety system (onstar) cannot be accessed due to lack of audio rendering it useless in a crash/emergency which is a selling point they tout. I do have video of this occurring. Dealership says they cannot repair and that consumers are just stuck with expensive vehicles they cannot rely on.

Vehicle electronics fail leaving Vehicle in a dead state with no ability to lock or unlock doors