GM Service Manual Online
For 1990-2009 cars only

Cause

Action

The shaft system is damaged.

Replace the shaft assembly.

The housing assembly is damaged.

Replace the housing assembly.

The brake transmission shift interlock (BTSI) system is damaged.

Repair or replace the BTSI as required.

The key is incorrect, bent, or twisted.

Replace the key.

The park lock cable is not adjusted properly.

Adjust the park lock cable.