GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Optra 🢒 Body 🢒 Data Link Communications 🢒 Theft Deterrent Module Replacement

Removal Procedure

    Object Number: 1248378 Size: SH
  1. Remove the instrument panel lower cover.

    2. Object Number: 1252101 Size: SH
  2. Disconnect the electrical connector from the immobilizer control unit.

    3. Object Number: 1252102 Size: SH
  3. Remove the immobilizer control unit.

Installation Procedure

    Object Number: 1252101 Size: SH
  1. Install the immobilizer control unit.
  2. Connect the electrical connector to the immobilizer control unit.

    3. Object Number: 1248378 Size: SH

    Important: After replacing the immobilizer, the keys must be re-authorized using the key coding procedure. Refer to Programming Additional Keys .

  3. Install the instrument panel lower cover