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

Module Power, Ground, Serial Data, MIL


Object Number: 1257886  Size: FS
Master Electrical Component List
Engine Data Sensors - Pressure and Temperature
Underhood Fuse Block - I/P Fuse, I/P Fuse Block - Horn, Stoplamp, Meter Hazard, Door Lock RKE, ECM TCM, and Clock Audio Fuses
Underhood Fuse Block - I/P Fuse, I/P Fuse Block - Horn, Stoplamp, Meter Hazard, Door Lock RKE, ECM TCM, and Clock Audio Fuses
DLC - 1.4L, 1.5L, 1.6L
Module Power, Ground, Malfunction Indicator Lamp (MIL), Hold Lamp and Serial Data
Figure 2:

Engine Data Sensors - Pressure and Temperature


Object Number: 1257887  Size: FS
Master Electrical Component List
Ignition Controls - Ignition System
Module Power, Ground, Serial Data, MIL
Vehicle Speed Sensor
Figure 3:

Ignition Controls - Ignition System


Object Number: 1358346  Size: FS
Master Electrical Component List
Ignition Controls - Sensors
Engine Data Sensors - Pressure and Temperature
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Instrument Panel Gages (1.5L)
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Figure 4:

Ignition Controls - Sensors


Object Number: 1257888  Size: FS
Master Electrical Component List
Fuel Controls - Fuel Pump Controls and Fuel Injectors
Ignition Controls - Ignition System
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Engine Data Sensors - Pressure and Temperature
G103 (HV-240)
Figure 5:

Fuel Controls - Fuel Pump Controls and Fuel Injectors


Object Number: 1257889  Size: FS
Master Electrical Component List
EVAP and Device Controls
Ignition Controls - Sensors
Instrument Panel Gages (1.5L)
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 1 Fuse, Ignition Switch, I/P Fuse Block, - CIGAR JACK, AUDIO CLOCK, METER CLOCK, TSIG, BACKUP LAMP, and AIR BAG Fuses
Figure 6:

EVAP and Device Controls


Object Number: 1257890  Size: FS
Master Electrical Component List
Controlled/Monitored Subsystem Referances
Fuel Controls - Fuel Pump Controls and Fuel Injectors
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Underhood Fuse Block - IGN 2 Fuse, Ignition Switch, I/P Fuse Block, - DIS INJECTOR, ECM TCM, WIPER WASHER, and HVAC BLOWER Fuses
Figure 7:

Controlled/Monitored Susbsystem References


Object Number: 1456603  Size: FS
Master Electrical Component List
EVAP and Device Controls
Multifunction Alarm Module
Instrument Panel Gages (1.5L)
Single Cooling Fan - 1.4L SOHC, 1.5L
HVAC Manual - Blower Controls