GM Service Manual Online
For 1990-2009 cars only

Causes

Action

1-2/3-4 or 2-3 Shift Solenoid Valves are defective or the On-Off Valve in the Valve Body Assembly is locked.

Refer to DTC P0753 1-2/3-4 Shift Solenoid Circuit Electrical and DTC P0758 2-3 Shift Solenoid Circuit Electrical .