Diagnostic Aids

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

You must drive the vehicle in order to experience a condition.
DTCs P0741 and P0742 may be caused by any of the following:
- An internal problem with the TCC
- A stuck or sticking TCC regulator valve
- A stuck or sticking TCC valve
- The TCC solenoid