GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Astro - 2WD 🢒 Body and Accessories 🢒 Body Control System 🢒 Ignition Lock Cylinder Replacement - On Vehicle

Removal Procedure
  1. Disable the SIR system. Refer to Disabling the SIR System in SIR.
  2. Roll back the shift lever seal from the upper and the lower steering column trim covers.
  3. Remove the lower steering column trim cover. Refer to Steering Column Trim Covers Replacement - On Vehicle .
  4. Remove the 2 TORX® screws from the upper steering column trim cover.
  5. Lift the upper steering column trim cover to gain access to the lock cylinder access hole.

    6. Object Number: 375310 Size: SH
  6. Using a bent tip awl, insert the tip into the ignition lock cylinder access hole.

    7. Object Number: 375316 Size: SH
  7. Turn the ignition lock cylinder to the START position.

    8. Using the bent tip awl, push down on the ignition lock cylinder retaining pin.

  8. Release the ignition lock cylinder to the RUN position.

    9. Object Number: 375305 Size: SH
  9. Remove the ignition lock cylinder from the lock module assembly by pulling the ignition lock cylinder away from the steering column.

Installation Procedure

    Object Number: 375309 Size: SH
  1. Insert the ignition lock cylinder through the upper shroud.
  2. Install the ignition lock cylinder to the lock module assembly by doing the following procedure:
    3. 2.1. Align the positioning slot and locking tab slot on the lock module assembly to the positioning tab and locking tab on the ignition lock cylinder.
    2.2. Push the ignition lock cylinder into the lock module assembly until the locking tab locks against the lock module.

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the 2 TORX® screws to the upper steering column trim cover.

    4. Tighten
    Tighten the screws to 1.5 N·m (31 lb in).

  4. Install the lower steering column trim cover. Refer to Steering Column Trim Covers Replacement - On Vehicle .
  5. Install the shift lever seal to the upper and the lower steering column trim covers.
  6. Enable the SIR system. Refer to Enabling the SIR System in SIR.
  7. Perform the Passlock learn procedure. Refer to PASSLOCK Reprogramming Auto Learn in Theft Deterrent.