GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 2070639  Size: SH
  1. Place the ignition switch in the OFF position.
  2. Apply and release the brake pedal several times until the pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
  3. Disconnect the power brake booster vacuum sensor electrical connector.
  4. Remove the power brake booster vacuum sensor (1).

Installation Procedure


    Object Number: 2070639  Size: SH
  1. Install the power brake booster vacuum sensor (1).
  2. If necessary, a small amount of denatured alcohol may be used as a lubricant to ease installation. Do not use soap.

  3. Connect the power brake booster vacuum sensor electrical connector.