GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1617984  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the steering column covers. Refer to Steering Column Trim Covers Replacement .

  3. Object Number: 1617986  Size: SH
  4. Slide the immobilizer control unit toward the steering wheel until it slides off its mounting bracket.
  5. Disconnect the electrical connectors from the immobilizer control unit.

Installation Procedure


    Object Number: 1617987  Size: SH
  1. Connect the electrical connectors to the immobilizer control unit.
  2. Slide the immobilizer control unit onto its mounting bracket.

  3. Object Number: 1617988  Size: SH
  4. Install the steering column covers. Refer to Steering Column Trim Covers Replacement .
  5. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  6. Reauthorize the keys. Refer to Programming Additional Keys .
  7. Reset the electronic control module (ECM) identification code. Refer to Programming Theft Deterrent System Components .