GM Service Manual Online
For 1990-2009 cars only
Figure 1:
Object Number: 520917  Size: SH
(1)To Rocker Arm Cover
(2)EVAP Service Port
(3)To EVAP Canister (At Rear of Vehicle)
(4)Air Intake Duct
(5)Throttle Body
(6)PCV Valve
(7)Fuel Pressure Regulator
(8)To Transaxle
(9)Intake Manifold
(10)To Accessory
(11)To Vacuum Brake Booster
(12)MAP Sensor
(13)EVAP Canister Purge Valve
Figure 2:

EVAP System Overview


Object Number: 678941  Size: LF
(1)EVAP Canister Purge Solenoid
(2)EVAP Canister
(3)Fuel Fill Neck/Fill Cap
(4)Rollover Valve/Fuel Tank Pressure (FTP) Sensor
(5)Fuel Tank
(6)EVAP Canister Vent Solenoid
(7)Vent Hose/Pipe
(8)EVAP Vapor Pipe
(9)EVAP Purge Pipe
(10)EVAP Service Port