GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 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 AIR Pump Shut Off Valve vacuum port (4).
  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 (5) line 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.