GM Service Manual Online
For 1990-2009 cars only
Figure 1:

LD9 With EGR


Object Number: 103631  Size: LF
(1)Located at Rear of Vehicle
(2)EVAP Canister Vent Valve
(3)EVAP Service Port
(4)Fuel Pressure Regulator
(5)Throttle Body
(6)MAP Sensor
(7)To Intake Manifold
(8)Accessory Vacuum
(9)To Brake Booster
(10)To Intake Pre-Plenum
(11)Oil Separator Mounted On Block
(12)To Engine Timing Chain Housing
(13)EVAP Canister Purge Valve
(14)To Fuel Tank
(15)EVAP Canister
Figure 2:

LD9 Without EGR


Object Number: 409332  Size: SF
(1)Throttle Body
(2)MAP Sensor
(3)To Intake Manifold
(4)To EVAP Canister (at the rear of vehicle)
(5)To Intake Pre-Plenum
(6)Oil Separator Mounted (on engine block)
(7)To Engine Timing Chain Housing
(8)EVAP Canister Purge Solenoid Valve
(9)Fuel Pressure Regulator