The most common symptom of a faulty Transmission Control Module is “LIMP MODE”. This is a safety feature specifically designed to disable the transmission’s ability to shift gears and causes it to default to a single usable gear to prevent further damage to your transmission.
Other common signs of a faulty Transmission Control Module include:
- No upshift or downshift
- Harsh reverse or drive engagement
- No kick down
- Stuck in neutral / park
- Loss of power while driving
- Warning lights on dashboard
Click here for more extensive details on Transmission Control Module repairs.