GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Express 🢒 Engine 🢒 Engine Controls - 8.1L 🢒 Secondary Air Injection Shutoff Valve Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove shut-off valve outlet hose from shut-off valve.
  3. Remove vacuum line from shut-off valve.
  4. Remove pump outlet hose from the shut-off valve.
  5. Remove the shut-off valve.

Installation Procedure
  1. Install the shut-off valve to the pump outlet hose.
  2. Install the vacuum line to the shut-off valve.
  3. Install the shut-off valve outlet hose to the shut-off valve.
  4. Lower vehicle.