GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Monte Carlo 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Ignition Switch Lock Cylinder Replacement

Removal Procedure

    Important: Perform the body control module (BCM) theft deterrent relearn procedure whenever you replace the ignition switch lock cylinder.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the instrument panel (I/P) cluster trim plate. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .

    3. Object Number: 1180361 Size: SH
  3. Insert the key and turn the ignition lock cylinder to the ON/RUN position.
  4. Using a small curved tool or an L-shaped hex wrench, depress and hold the detent on the ignition lock cylinder. Access the detent by placing the tool through the I/P opening to the right of the ignition switch. If you cannot locate the detent with the tool, lower the ignition switch away from the I/P. Refer to Ignition and Start Switch Replacement .

    5. Object Number: 1177259 Size: SH
  5. Using the key as an aid, pull to remove the lock cylinder from the switch.
  6. Remove the key from the lock cylinder.
  7. If the cylinder does not rotate or is seized, follow the procedure in the ignition switch replacement. Refer to Ignition and Start Switch Replacement .

Installation Procedure

    Object Number: 1055856 Size: SH
  1. Code the ignition lock cylinder, if necessary. Refer to Key and Lock Cylinder Coding in General Information.
  2. Insert the key and turn the lock cylinder to the ON/RUN position.
  3. Position the lock cylinder to the ignition switch. Press the cylinder into place. If you turned the key slightly while removing the lock cylinder, you may have to align the white colored ignition switch rotor (1) with the lock cylinder (2). You can rotate the ignition switch rotor (1) with your finger.
  4. Turn the key to the OFF position and remove the key.
  5. Install the I/P cluster trim plate. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
  6. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  7. If you installed a new lock cylinder, perform the BCM theft deterrent relearn procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.