C Yukon 2WD V8-5.7L VIN R (1999)
Air Injection Control Valve: Service and Repair
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
1. Disconnect the negative battery cable.
2. Remove the inlet and outlet hoses from the air shut off valve.
3. Disconnect the vacuum hose from the air shut off valve.
4. Remove the air shut off valve retainer screw.
