GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 873540  Size: SH
  1. Remove the nuts from the combination valve studs.
  2. Remove the air hose.
  3. Remove the vacuum hoses.
  4. Remove the bolt and separate air pump solenoid from the combination valve.
  5. Remove the combination valve and gasket from the rear air compressor bracket.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 873547  Size: SH

    Important: Ensure the gaskets are installed correctly or a leak will occur. If the gaskets are removed from the studs, replace with new gaskets.

  1. Install the combination valve studs into the rear air compressor bracket through the air pipe flange holes.
  2. Install and torque the nuts.
  3. Tighten
    Tighten the combination valve studs to 7 N·m (62 lb in).

  4. Install the air pump solenoid.
  5. Install and torque the bolt.
  6. Tighten
    Tighten the air pump solenoid bolt to 3.4 N·m (30 lb in).

  7. Install the vacuum hoses.
  8. Install the air hose.