GM Service Manual Online
For 1990-2009 cars only

Emission Hose Routing Diagram


Object Number: 661620  Size: SH
(1)Vacuum Solenoid Switch-over Valve
(2)To Brake Booster
(3)To HVAC
(4)AIR Solenoid Valve
(5)AIR Control Valve
(6)Variable Control Vacuum Solenoid
(7)Variable Intake Manifold Vacuum Actuator
(8)Vacuum Reservoir
(9)Throttle Body Assembly
(10)Intake Manifold
(11)EVAP Canister Purge Solenoid Valve
(12)To EVAP Canister
(13)Crankcase Ventilation Primary
(14)Crankcase Ventilation Secondary
(15)Intake Plenum Switch-over Valve