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

Power, Ground, Serial Data, MIL


Object Number: 2077618  Size: FS
Figure 2:

Engine Data Sensors - Pressure and Temperature


Object Number: 2077645  Size: FS
G103, G105, G108 (Diesel), G201
Figure 3:

Engine Data Sensors - Pedal Position, EGR, Exhaust Gas Temperature Sensors


Object Number: 2077650  Size: FS
Figure 4:

Engine Data Sensors - Glow Plug Controls, CKP and CMP Sensors, Clutch Start Switch


Object Number: 2077653  Size: FS
Figure 5:

Fuel Pump Controls


Object Number: 2077655  Size: FS
Figure 6:

Fuel Controls - Fuel Injectors, Water in Fuel/Temperature Sensors


Object Number: 2077657  Size: FS
Figure 7:

PTC Heater


Object Number: 2077659  Size: FS
Figure 8:

Controlled/Monitored Subsystem References


Object Number: 2077660  Size: FS