GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon XL - 4WD 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Secondary Air Injection Shutoff Valve Replacement

Removal Procedure

    Object Number: 353967 Size: SH
  1. Release the clamp (4) securing the AIR hose to the AIR pump assembly base.
  2. Release the clamp (5) securing the AIR hose to the AIR pump shut-off valve.

    3. Object Number: 390304 Size: SH
  3. Remove the AIR hose from the AIR pump shut-off valve outlet port (3).
  4. Remove the vacuum line (5) from the vacuum port (4) of the AIR pump shut-off valve.
  5. Release the AIR pump shut-off valve inlet port (1) from the AIR pump outlet hose.

Installation Procedure

    Object Number: 390304 Size: SH
  1. Install the AIR pump shut-off valve inlet port (1) to the AIR pump outlet hose.
  2. Install the vacuum line  (5) to the AIR pump shut-off valve vacuum port (4).
  3. Install the AIR hose to the AIR pump shut-off valve inlet port (3).

    4. Object Number: 353967 Size: SH
  4. Install the clamp (5) securing the AIR hose to the AIR pump shut-off valve.
  5. Install the clamp (4) securing the AIR hose to the AIR pump assembly base.