2018 Chevrolet Tahoe Power Train

Transmission is overheating and forcing the truck into limp mode

The contact owns a 2018 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the vehicle began to shake excessively, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was repaired, but the failure reoccurred. The manufacturer was not notified of the failure. The failure mileage was 80,000. The VIN was not available.

Transmission failure at 110,000 miles. No warning lights, no codes. The transmission was slipping during acceleration, random rpm bouncing at a steady speed, acting lost in gears, slow power up hills then takes off. Currently sitting at a chevy dealership.

Like every other GM vehicle from 2014 to 2021, the tongue converter has failed and ruined the crappy transmission.

On 7/27/2023, the transmission in my 2018 Chevy Tahoe failed. There was no warning, noise or lights I dicating a problem. I was trying to excelerate after turning at a stop light. There was a slight hesitation when shifting so I let off the gas. When I tried again, it didn’t do anything and I began losing speed. I had to have the vehicle towed to the dealership. Upon their inspection the tech determined internal failure inside transmission. I was told I was 3,000 miles out of warranty.

On July 29, 2022 my Tahoe broke down on me while driving home from work. It started to lose speed while on a busy highway during rush hour. I started losing speed and I kept giving it gas and it wouldn’t go. I kept trying to get speed to try and get off the highway to avoid getting into an accident or put someone else in danger. Somehow I managed to get off into a shopping center. I had come up to a stop sign and couldn’t even get the Tahoe to stop while there was a lot of traffic in the shopping center as well. I eventually got it to a safe spot and called a tow truck. I live almost an hour from home. The shop the Tahoe was towed too said the torque converter was contaminated with metal shavings that was caused by parts on the Tahoe grinding together and therefore contaminating the torque converter and then it ruined my transmission. I was also told this is a common thing they are seeing with Chevy Tahoes, but yet no recalls have been issued and I think something needs to be down about it. It put my life in danger as well as other drivers around me! And I couldn’t afford to fix it so I lost my vehicle and all the hard work and money I put into paying my vehicle since 2018! I also found a lawsuit regarding this issue too.

WE JUST HAD TO SPEND $1,000 TO HAVE THE RADIATOR REPLACED ON OUR 2018 CHEVROLET TAHOE BECAUSE IT WAS LEAKING WHICH ONLY HAS 32,050 MILES ON IT. THE TAHOE HAD A 3 YEAR 36,000 MILE BUMPER TO BUMPER WARRANTY, BUT WE WERE TWO (2) DAYS PAST THE 3 YEAR MARK SO THEY WOULD NOT COVER IT. THE TAHOE ALSO HAS A 5 YEAR 60,000 POWERTRAIN WARRANTY, BUT THE DEALERSHIP SAID THAT THE RADIATOR IS NOT CONSIDERED TO BE PART OF THE POWER TRAIN ONLY THE HOSES GOING FROM THE RADIATOR TO THE ENGINE WERE COVERED UNDER THE POWERTRAIN WARRANTY. IN JANUARY 2019 GM ISSUED SERVICE BULLETIN PI1513F (ATTACHED) FOR 2015-2016 TAHOES FOR THIS EXACT SAME LEAKING RADIATOR ISSUE WHICH STATES THAT THE RADIATOR REPLACEMENT SHOULD BE COVERED UNDER THE POWER TRAIN WARRANTY. THIS IS A KNOWN ISSUE FOR 2017 & 2018 MODELS ALSO, BUT GM HAS NOT ISSUED A RECALL, NOR WILL THEY COVER THE 2017-2018 MODEL UNDER THE 5 YEAR 60,000 MILE POWER TRAIN WARRANTY LIKE THEY DO WITH THE 2015-2016 MODELS.