GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2007 🢒 Grand Prix 🢒 Safety and Security 🢒 Immobilizer 🢒 Theft Deterrent Module Replacement

Removal Procedure

    Object Number: 639144 Size: SH
  1. Remove the ignition switch lock cylinder. Refer to Ignition Switch Lock Cylinder Replacement .
  2. Disengage the retainers (1, 2) from the theft deterrent reader module.
  3. Remove the theft deterrent module (3) from the lock cylinder housing.

Installation Procedure

    Object Number: 639144 Size: SH
  1. Slide the theft deterrent module (3) onto the ignition lock cylinder housing. Verify that the retainers (1, 2) are engaged.
  2. Install the ignition switch lock cylinder. Refer to Ignition Switch Lock Cylinder Replacement .