Conditions for Running the DTC
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The engine is running.
- The TCM temperature is less than 150°C (302°F) for greater than 5 seconds.
- DTC P0634 is not set.