2023 CHEVROLET TAHOE Complaints

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving approximately 60 MPH, the vehicle suddenly decelerated to 5 MPH. The message "Deceleration - Warning" was displayed. The contact was able to pull over to the side of the road. The contact turned off and restarted the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the transmission valve had failed and needed to be replaced; however, the part was not available to repair the vehicle. The dealer advised the contact that the vehicle was unsafe to drive. The vehicle was not repaired and remained at the dealer for more than two months. The manufacturer was notified of the failure and confirmed that the part was not available. The failure mileage was approximately 35,000.

Engine replacement at 13,260 miles due to thrown rods in cylinders 7 and 8 in September 2023. The vehicle is currently at the dealership again at 32,000 miles due to transmission issues. No ETA on replacement parts. Up to date on all maintenance and oil changes.

The contact owns a 2023 Chevrolet Tahoe. The contact stated while driving 25 MPH, the transmission unexpectedly downshifted with the check engine warning light illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the transmission valve body had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 30,000.

We were driving on the highways, we had to break and the car shut off, we barely made it to the side of the road and the car would not turn over, start, or go in to neutral, which was very unsafe. Had to have it drug on the tow truck since it wouldn’t go to neutral and at the dealer it had 17 codes. The engine seized and they are having to order a new engine.

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.

Engine: Power lost and engine shut down. Yes, it is available for inspection. Warning Lamps: Engine lamp came on: [XXX] [XXX] Engine shut down while driving. While bring my Grandson, home from school. I was on the ramp to exit the interstate, at the stop sign I lightly touched my brakes because I was going very slow, nothing was coming when I accelerated the engine totally shut down in between both lanes on a state highway. All of the warning lamps on the dashboard were lighting up and blinking, all of the alerts were making noises, no power and I had no control of the vehicle, then the “press start signal” came on, I had to quickly place from drive to park, and then press the start button to crank the vehicle. While this was going on my Grandson asked me in a startled voice “what’s happening”. Scary is not the word “I saw my life and his life flash before my eyes” with my Grandson in the vehicle. That’s a [XXX] of a feeling that you never want to experience. Then he said “this is nothing but a tin can ”. All of my family calls this vehicle a “Tin Can”! This was a very dangerous situation that could have been life-threatening or death. The problem has not been reproduced. Dealership sent a GM Field Service Engineer to inspect vehicle on 3/18/25. I have had many problems with this vehicle that cannot be diagnosed. Engineer test drove twice and scanned for codes before and after test drives. His findings: no codes found, was unable to reproduce power loss, and loose negative terminal on battery post tightened. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The engine stoped running at about 50mph. Beatty Chevrolet in Knoxville TN has car Suddenl deceleration no brake lights and stuck on curvy [XXX] Engine is lockedup and Beaty ordered a new engine with gm approval Beaty Chevrolet inspected the engine The only message was push start again. The service dept rep said this is rare but had 5 6.2l engines affected at his shop. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

At approximately 19.000 miles when the car sits for an extended period of time, at the first start up, blue smoke comes from the exhaust tail pipe. Brought it to the dealer and they said that, that was normal. With the issues they are having with the engines, I wanted this to be noted, because blue smoke is indicative of either bad piston rings or bad valve seals. This should not be happening on a vehicle with 19,000 miles and have oil changes at every 3000 miles.

We were driving on a busy interstate in Knoxville, TN on a Sunday. We were 2 hours from home and my 2023 Tahoe basically went into limp mode while I was in the fast lane and the check engine light came on. No warning in advance. The speed reduced, which backed traffic up, and put me and my 4 children in danger. We finally got off the interstate and the vehicle had to be towed in to the nearest dealership. I had a friend drive us to enterprise where they put us in a Jeep Grand Wagoneer. On Monday, I received a call from the dealership stating they had good and bad news. The good news was the repair is covered by warranty but the bad news was it will be 2-3 months before they can get the part. The part is on back order and several people are waiting ahead of me. The said part is a valve body for the engine/transmission. The dealership also informed me that warranty will not cover a non-GM vehicle and that they will only pay for a rental up to 44.00/day. It’s not my fault the part is on back order, nor that enterprise gave me a non-GM vehicle. Also, I have a family of 6, which is why I have a Tahoe and I cannot be put in a small sedan. My children play sports, we have upcoming vacation, and quite frankly, I didn't pay 90,000.00 for a vehicle to be placed in a vehicle that I don’t feel is safe for my family. If I had wanted a sedan, I would have bought one. GM should take better care of their customers, especially when something is like this is not the customers fault!!! I have contacted GM and have been told I will be called back by a supervisor each time I talk to someone. This is unacceptable!!

vehicle shutters when downshifting/slowing. Most commonly at cruising speeds between 40 and 50 mph, but does occur at lower speeds as well. Vehicle can be felt vibrating/shaking consistently every time it is driven. Was taken into a dealership, was not adequately diagnosed as it was only test driven 1 mile per the paperwork and they could not duplicate the issue and was told they were "in the business of making money to repair vehicles" and this was a warranty repair. While leaving a gentleman was walking in and happened to have the same type of vehicle and asked my husband what we were there for, turns out he was having the same issues. The vehicle shuttered the entire drive home after leaving the dealership and has continued since.