Chevrolet Tahoe owners have reported 1 problem related to automatic transmission fluid/lubricant valves/valve body (under the power train category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Tahoe based on all problems reported for the Tahoe.
The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving at various speeds uphill, the vehicle made a loud clunking sound while downshifting. While driving 70 mph on one occasion, and while driving 20 mph on another occasion, the vehicle made a loud clunking sound while downshifting and lost motive power, prompting the driver to pull over to the side of the road. The message "reduced acceleration - drive with care" was displayed, and the check engine warning light illuminated following the failure. The vehicle was restarted but the warning light remained illuminated. The vehicle was taken to a local dealer, where it was diagnosed and determined that the transmission control valve body and a separator plate or spacer needed to be replaced. The contact associated the failure with TSB: 22-na-258; however, the VIN was not included. The vehicle was being repaired. The manufacturer was notified of the failure by phone and offered partial financial assistance. The failure mileage was approximately 76,000.
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