GM Full Size Vans 1967-1986 Repair Guide

Adjustments

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DRUM BRAKES



These brakes are equipped with self-adjusters and no manual adjustment is necessary, except when brake linings are replaced. Please refer to the shoe replacement procedures.

DISC BRAKES



These brakes are inherently self-adjusting and no adjustment is necessary or possible.

BRAKE PEDAL



The stop light switch provides for an automatic adjustment for the brake pedal when it is returned to its stop. With pedal in fully released position, the stop light switch plunger should be fully depressed against the pedal shank. Adjust the switch by moving in or out as necessary.

  1. Make certain that the tubular clip is in brake pedal mounting bracket.
  2.  
  3. With brake pedal depressed, insert switch into tubular clip until switch body seats on clip. Audible clicks can be heard as the threaded portion of the switch is pushed through the clip toward the brake pedal.
  4.  
  5. Pull brake pedal fully rearward against pedal stop until audible clicking sounds can no longer be heard. Switch will be moved in tubular clip providing adjustment.
  6.  
  7. Release brake pedal and then repeat Step 3 to assure that no audible clicking sounds remain.
  8.  

 
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