Ignition Lock Cylinder

REMOVAL & INSTALLATION

Functional Lock

The following procedure is for vehicles with functioning lock cylinders. Ignition keys are available for these vehicles or the ignition key numbers are known and the proper key can be made.

1. Disconnect the negative battery cable. If equipped, properly disarm the air bag system; refer to Section 6.
2. On 1989 vehicles, remove the trim shroud halves by removing the attaching screws. Remove the electrical connector from the key warning switch.
3. Turn the ignition to the RUN position.
4. Place a ¹⁄₈ in. diameter wire pin or small drift punch in the hole in the casting surrounding the lock cylinder and depress the retaining pin while pulling out on the lock cylinder to remove it from the column housing.

   To install:

5. To install the lock cylinder, turn it to the RUN position and depress the retaining pin. Insert the lock cylinder into its housing in the lock cylinder casting.
6. Make sure the cylinder is fully seated and aligned in the interlocking washer before turning the key to the OFF position. This action will permit the cylinder retaining pin to extend into the hole in the lock cylinder housing.
7. Using the ignition key, rotate the cylinder to ensure the correct mechanical operation in all positions.
8. Check for proper start in P or N. Also make sure the start circuit cannot be actuated in D or R positions and that the column is locked in the LOCK position.
9. Attach the key warning buzzer electrical connector and install the trim shrouds, if required.

Non-Functional Lock

The following procedure is for vehicles with non-functioning locks. On these vehicles, the lock cylinder cannot be rotated due to a lost or broken key, the key number is not known, or the lock cylinder cap is damaged and/or broken, preventing the lock cylinder from rotating.

1. Disconnect the negative battery cable.
2. If equipped, properly disarm the air bag system; refer to Section 6.
3. Remove the steering wheel; refer to the procedure in this section.
4. On 1989 vehicles, remove the trim shroud halves by removing the attaching screws.
5. Remove the electrical connector from the key warning switch.
6. On 1989–90 vehicles, drill out the retaining pin using a ¹⁄₈ in. diameter drill, being careful not to drill deeper than ¹⁄₂ in. Position a chisel at the base of the ignition lock cylinder. Strike the chisel with sharp blows, using a hammer, to break the cap away from the lock cylinder.
7. On 1991–98 vehicles, use channel lock or vise grip type pliers to twist the lock cylinder cap until it separates from the lock cylinder.
8. Drill approximately 1 ³⁄₄ in. down the middle of the ignition key slot, using a ³⁄₈ in. diameter drill bit, until the lock cylinder breaks loose from the breakaway base of the lock cylinder. Remove the lock cylinder and drill shavings from the lock cylinder housing.
9. Remove the snapring or retainer, washer and steering column lock gear. Thoroughly clean all drill shavings and other foreign materials from the casting.
10. Inspect the lock cylinder housing for damage and replace, as necessary.

    To install:

11. Install the ignition lock cylinder and check for smooth operation.
12. Attach the electrical connector to the key warning switch and install the trim shrouds, if necessary.
13. Install the steering wheel and connect the negative battery cable.