GM Service Manual Online
For 1990-2009 cars only

Cause

Action

The automatic transmission shift interlock system is damaged.

Repair or replace as required. Refer to Automatic Transmission Shift Lock Control Disassemble - Off Vehicle or Automatic Transmission Shift Lock Control Assemble - Off Vehicle .

The housing assembly is damaged.

Replace the housing assembly. Refer to Steering Column Jacket - Assemble - Off Vehicle .

The shaft assembly is damaged.

Replace the shaft assembly.

The park lock cable is not adjusted properly.

Adjust the park lock cable. Refer to Park Brake Cable Service/Adjustment in Park Brake.