GM Service Manual Online
For 1990-2009 cars only

Problem

Action

The ignition switch is incorrectly set.

    • Adjust the switch as needed.

The linkage is improperly adjusted.

    • Adjust the linkage as needed.
    • Replace the components as needed. Refer to Electric Park Lock Module - Disassemble - Off Vehicle or Electric Park Lock Module - Assemble - Off Vehicle or Linear Shift Assembly - Disassemble - Off Vehicle or Linear Shift Assembly - Assemble - Off Vehicle .

The lock cylinder is damaged.

Replace the lock cylinder as needed. Refer to Coolant Heater Replacement or Steering Column Lock Cylinder Set - Disassemble - Off Vehicle or Steering Column Lock Cylinder Set - Assemble - Off Vehicle or Electric Park Lock Module - Disassemble - Off Vehicle or Electric Park Lock Module - Assemble - Off Vehicle .