GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Vacuum Modulator

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REMOVAL & INSTALLATION



  1. Raise and safely support the vehicle
  2.  
  3. Locate and remove the modulator retaining bolt. Disconnect the vacuum line.
  4.  
  5. Pull the modulator straight back from the case.
  6.  
  7. Installation is the reverse of removal. Lube the O-ring with petroleum jelly and torque the retaining bolt to 20 ft. lbs.
  8.  

 
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