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

Power, Ground, Serial Data, Malfunction Indicator Lamp (MIL)


Object Number: 1346270  Size: FS
Master Electrical Component List
Engine Data Sensors
Underhood Fuse Block-Battery Feeds
Underhood Fuse Block-Battery Feeds
Relay Ignition Fuse
TCM, ECM
LHD
Figure 2:

Engine Data Sensors


Object Number: 1346272  Size: FS
Master Electrical Component List
Oxygen Sensors
Power, Ground, Serial Data, MIL
Vehicle Speed Sensor (MR 140)
Underhood Fuse Block-Battery Feeds
Cluster, Air Bag, Turn Signal and Cruise Fuses (LHD)
Figure 3:

Oxygen Sensors (O2S)


Object Number: 1346274  Size: FS
Master Electrical Component List
Ignition Controls, Ignition System
Engine Data Sensors
Engine Main and Fuel Pump Fuses (ITMS)
Figure 4:

Ignition Controls - Ignition System


Object Number: 1346276  Size: FS
Master Electrical Component List
Ignition Controls-Sensors
Oxygen Sensors
Engine Main and Fuel Pump Fuses (ITMS)
Underhood Fuse Block-Battery Feeds
Relay Ignition Fuse
Figure 5:

Ignition Controls - Sensors


Object Number: 1507850  Size: FS
Master Electrical Component List
Fuel Controls-Fuel Pump Controls and Fuel Injectors
Ignition Controls, Ignition System
Engine Main and Fuel Pump Fuses (ITMS)
Engine Main and Fuel Pump Fuses (ITMS)
Engine Data Sensors
Figure 6:

Fuel Controls - Fuel Pump Controls and Fuel Injectors


Object Number: 1507851  Size: FS
Master Electrical Component List
Fuel Controls-EVAP Controls and Device Controls
Ignition Controls-Sensors
Underhood Fuse Block-Battery Feeds
Engine Main and Fuel Pump Fuses (Sirius)
Engine Main and Fuel Pump Fuses (Sirius)
Cluster-ITMS-6F Odmeter, Speedometer, Tachometer, Temperature, Fuel, Fuel Warning Lamp, Illumination Lamp
G301
Figure 7:

Fuel Controls - EVAP Controls and Device Controls


Object Number: 1507856  Size: FS
Master Electrical Component List
Controlled/Monitored Subsystem References
Fuel Controls-Fuel Pump Controls and Fuel Injectors
Underhood Fuse Block-Battery Feeds
Underhood Fuse Block-Battery Feeds
Figure 8:

Controlled/Monitored Subsystem References


Object Number: 1507857  Size: FS
Master Electrical Component List
Fuel Controls-EVAP Controls and Device Controls
ABS
Dual Fans (MR-140)
Compressor Control (Sirius D4)
Compressor Controls (Sirius D4)
Cluster-Alternator, Brake Switch, ABS Warning Lamp Module, SDM, TCM, ECM, DRL