GM Astro/Safari 1985-1996 Repair Guide

Brake Light Switch

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See Figures 1 and 2



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Fig. Fig. 1: Plunger type brake light switch



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Fig. Fig. 2: Box type brake light switch

REMOVAL & INSTALLATION



Plunger Type
  1. Disconnect the negative battery terminal from the battery.
  2.  
  3. Disconnect the electrical connector from the brake light switch.
  4.  
  5. Turn the brake light switch retainer (to align the key with the bracket slot), then remove the switch with the retainer.
  6.  
  7. To install, reverse the removal procedures. Adjust the brake light switch.
  8.  

Box Type
  1. Disconnect the negative battery terminal from the battery.
  2.  
  3. Disconnect the electrical connector from the brake light switch.
  4.  
  5. Release the brake pushrod retainer, then remove the switch with the retainer.
  6.  
  7. To install, reverse the removal procedures.
  8.  

ADJUSTMENT



Only the plunger type of brake light switch needs to be adjusted. The box type is self adjusting.

  1. Depress the brake pedal and press the brake light switch inward until it seats firmly against the clip.
  2.  

As the switch is being pushed into the clip, audible clicks can be heard.

  1. Release the brake pedal, then pull it back against the pedal stop until the audible click can no longer be heard.
  2.  
  3. The brake light switch will operate when the pedal is depressed 13mm (0.53 in.) from the fully released position.
  4.  

 
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