Transmission control module failure strands vehicle
POWER TRAIN
2 NHTSA complaints · 2025-02 → 2025-07
“I stopped to get gas and put the car in park. Turned the car off and when I started it back up the car thought it was in drive but was in park still. The gas pedal won’t not work and the car is now stuck in park. The Chevy Caddilac dealership said it is a failed TCM. Part is on”
“Escalade would experience loss of acceleration 15-20mph under light/moderate throttle, appear to go in to neutral when going from 3rd to 4th (best I can tell,) and then slam in to gear. While doing 50-55mph Escalade would have a converter shudder or go in and out of neutral”