GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 815258  Size: SH
  1. Loosen the hose clamp and remove the vacuum hose from the check valve.
  2. Remove the check valve from the booster (5).

Installation Procedure


    Object Number: 815258  Size: SH
  1. Install the check valve to the booster (5).
  2. Install the vacuum hose to the check valve.
  3. Install the hose clamp in order to retain the vacuum hose to the check valve.