GM Blazer/Jimmy/Typhoon/Bravada 1983-1993 Repair Guide

Ignition Switch

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For anti-theft reasons, the ignition switch is located on top of the steering column assembly and is completely inaccessible without first lowering the steering column. The switch is actuated by a rod and rack assembly. A gear on the end of the lock cylinder engages the toothed upper end of the actuator rod.

REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the lower column trim panel, then remove the steering column-to-instrument panel fasteners and carefully lower the column for access to the switch.
  4.  
  5. Place the ignition switch in the OFF-LOCK position.
  6.  

If the lock cylinder was removed on vehicles through 1991, the actuating rod should be pulled up until it stops, then moved down one detent; the switch is now in the Lock position.



Click image to see an enlarged view

Fig. Fig. 1: Adjusting the ignition switch

  1. Remove the ignition switch-to-steering column retainers, then remove the assembly.
  2.  

To install:
  1. Before installing the ignition switch, place it in the OFF-LOCK position, then make sure that the lock cylinder and actuating rod are in the Locked position (1st detent from the top or 1st detent to the right of far left detent travel).
  2.  

Most replacement switches are pinned in the OFF-LOCK position for installation purposes. If so, the pin MUST be removed after installation or damage may occur.

  1. Install the activating rod into the ignition switch and assemble the switch onto the steering column. Once the switch is properly positioned, tighten the ignition switch-to-steering column retainers to 35 inch lbs. (4.0 Nm).
  2.  


CAUTION
When installing the ignition switch, use only the specified screws since over length screws could impair the collapsibility of the column.

  1. Raise the column into position and secure, then install any necessary trim plates.
  2.  
  3. Make sure the ignition is OFF , then connect the negative battery cable.
  4.  

 
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