2015 Chevrolet Tahoe: complete transmission failure

Filed Jan 21, 2026 · Transmission · SC

My transmission just randomly went out. I had my car evaluated in December of 2025 and nothing was reported on the transmission at all and as Jan 2026 my transmission went out.

Filed Apr 6, 2025 · Transmission · CA

Transmission delays in shifts. Whine coming from transmission as well. New torque converter and thermal bypass installed with new transmission fluid and filter. Truck was diagnosed and it’s okay in Chevrolets computers. This is a scary and unsafe way of feeling scared if transmission will fail.

Filed Dec 13, 2024 · Brakes, Engine · 5,000 miles · MI · 1 injury

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving from a complete stop and while driving at various speeds, the vehicle made an abnormal whining sound. There was no warning light illuminated. The vehicle was taken to the local dealer, where the transmission was replaced. The contact stated that after retrieving the vehicle from the dealer while driving 10-15 MPH, the brake pedal was depressed but was significantly firm and failed to respond. The contact drove into a curb and struck a parking sign pole. The air bags did not deploy. The contact stated that the failure exacerbated pre-existing injuries. The dealer was contacted and advised the contact to restart the vehicle and depress the brake pedal to verify whether the brake pedal was operable. The contact followed the dealer's instructions, and the brake pedal responded as needed; however, the vehicle was towed to the residence because the contact was concerned about driving the vehicle. The vehicle was then towed to the dealer, where it was diagnosed and determined that the vacuum pump needed to be replaced. The dealer replaced the vacuum pump; however, the failure recurred while driving. The check engine warning light was illuminated. The vehicle was taken back to the dealer, where it was diagnosed and determined that the lifters had failed. The vehicle was not repaired. The vehicle was taken to a second dealer, Midway Chevrolet Plainwell Auto Dealer (381 12th St, Plainwell, MI 49080), where it was diagnosed that the fuel pump wires, the transfer case oil and seal, the engine oil coolant hose, the valve cover gasket, and other unknown parts needed to be replaced. Additionally, the dealer determined that the ball joints needed to be replaced, and an alignment needed to be performed. The dealer also determined that the air ride compressor was noisy. The vehicle was not repaired. The vehicle was then taken to a third dealer, Heritage Chevrolet, Inc. (350 W Dickman Rd, Battle Creek, MI 49037), where it was diagnosed with an oil leak.

Filed Mar 5, 2024 · Transmission · NC

While driving on the highway I notice the rpm’s were high and the vehicle wasn’t going anywhere so I had to pull over from the middle lane to the side of the road I. Busy traffic gladly I mad it over safely without getting hit. After I pulled over the service engine light come on and the transmission temperature was high. After the vehicle cooled down and I was able to me the shifting was terrible it would jerk while shifting. So I called aamco transmission and they said I needed a transmission replacement. This is not the first Chevrolet Tahoe I have had that done this my 2010 Chevrolet Tahoe done the same thing and needed a transmission. The repair cost is at $5500.00.

Filed Aug 25, 2023 · Transmission · TX

The torque converters for the 2015 Chevy Tahoe’s or the 6L80 transmission are failing at a rate not seem on a newer vehicle. Chevy dealerships in my area are backed up for 2 to 3 weeks just to look at the possible problem. The failure appears to be due to poor design of the transmission torque converters. Safety is at risk due high failure rate that could occur at highway speeds and thus making the vehicle stop without brake lights and possible fail in the middle of the highway. At highway speeds this failure could cause serious damage and possible death. Due to the 2 to 3 weeks for the transmission to be looked at by Chevy, I chose to take my vehicle to a private repair shop. Prior taking my vehicle to the shop the shop knew based on the high failure rate that my transmission failure was based on the torque converter but the total damage was not known until the transmission was rebuilt. The transmission torque converter problem was reproduced and confirmed by an independent service center. The Transmission was inspected by AAAA transmission located in Fort Worth. The only warning I had of the failure of the transmission torque converter was accelerating to access the highway and the vehicle started to lose power and shutter due to the lack of acceleration. The luck for me was the highway was not crowded and I did not merge on the highway with the loss of power and possibly getting hit from behind by another vehicle. There were no warning signs of the failure the vehicle just started showing signs of the failure that day. The failure first appeared on June 30, 2023. Attached is the copy of the repair bill and pictures of the metal shavings due to the failure of the torque converter which destroyed the transmission pump. The shavings are steel and aluminum particles.

Filed Jul 14, 2023 · Transmission · MI

Transmission issue 2015 Tahoe: When accelerating when entering freeway to merge, or similar, vehicle sometimes experiences a sudden loss of power and lurch sensation -- almost feels like the truck was hit. Speed doesn't increase when needed in crash avoidance maneuver or when accelerating during general driving. Eventually transmission failed. Rebuilt. Has the same issue now. Appears this is part of GM class action lawsuit for transmissions and torque converter issues. Very disappointing.

Filed Apr 3, 2023 · Electrical, Engine · MA

The car was bucking on the highway it was losing power without notice. There was no prior notice from Onstar system either of any mechanical issues . There was No prior indications or check engine light before this instance. I was coming home in the dark on the highway which was a dangerous position to be in. The car's transmission Failed out of no where! I have had the car 22 months and was purchased from the Chevrolet Dealer.

Filed Mar 31, 2022 · Engine, Fuel system · SC

I was driving down the road at 65mph, when My transmission blew. I believe the correct term is that my torque converter went out. I basically came to a dead stop in traffic, endangering my life and my children's. My understanding is that this is a common issue with this type of transmission. Chevrolet should be ashamed of themselves for not recalling this item.

Filed Sep 10, 2021 · Transmission · DC

While accelerating from a green light the truck felt as if it shifted into neutral leaving me stranded in the middle of a 4 lane highway there was no indication or warning light or sign until after the incident. Only then did the check engine light come on. There was a slight vibration before the transmission failed at 85000 miles. The truck is in the shop having the transmission replaced. I lost total drive control in the middle of a busy highway the out come could have been very bad.

Filed Jan 24, 2020 · Brakes, Transmission · WA

Since purchasing my vehicle in 2016 I have had multiple issues. I have always noticed a drip of oil in my garage that wasn't consistent and when telling my dealership about it they stated they would look into it and found nothing. I was driving down the road and the side door black fascia flew off, the dealership replaced 3 stating it was still under the 34k warranty. I had requested they replace/secure the 4th and was told it was fine and didn't need replacing. I returned for an oil change about 6 months later and reported the one that was not replaced is now loose and was told by the dealership I was out of my warranty period and would be charged an hour labor as well as parts, costing roughly $120.00. I then had my AC go out in summer of 2019 and had that replaced supposedly a recall. When I took my car to the dealership for an oil change in fall 2019 I mentioned my car was not stopping properly while braking and they informed me there was a current recall that would fix the issue and that was performed. I was still noticing the braking issues. In nov.2019 I started to experience misfiring with the transmission and not shifting correctly. I made an appointment with the dealership and on the way to the dealership it worsened and I had to get it towed. I was informed I would not get a loaner car as all of theirs were out to people with parts required without an eta from gm. I was called 4 days later as I had not heard back and was told my car needed a replacement transmission as well as a new vacuum pump as this had failed and is the reason for the hard braking. The transmission was replaced and I was told to pick up my vehicle because the vacuum pump is on back-order without an eta and "I still have my ABS that will assist with stopping".

Filed Nov 15, 2019 · Transmission · 107,000 miles · NC

My 2015 tahoe began hesitating when I pressed the gas pedal leading me to believe I had purchased some bad gasoline. This continued for two weeks without any warning lights coming on. I decided to take the vehicle to be checked by an automotive place and as I was driving a warning light finally came on. They hooked it to computer and referred me to a transmission specialist located three miles away. The car broke down in a construction zone on the way to the transmission shop. My 2015 tahoe only had 107,000 miles on it and the transmission had to be replaced. The transmission shop stated that they had seen about four other tahoes of the same year that had to have transmissions replaced. It ended up costing me $3300.00 to replace the transmission. I think had a warning light been activated two weeks before I may could have taken it to the shop earlier and had it repaired instead of replaced. This seems to me way too soon to have to replace a transmission in an automobile.

Filed Aug 5, 2019 · Brakes, Engine · 104,000 miles · AR

Transmission completely went out at 104,000 miles, requiring new transmission. Entire air conditioning system had to be replaced today the brakes stopped working suddenly- waiting for diagnosis. Vehicle had to be towed. Almost in three different accidents trying to get somwhere and get stopped. Catylatic convertor needs to be replaced and currently has three codes related to it showing. This vehicle has been problem after problem since day one.