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

Power, Ground, Serial Data, and MIL


Object Number: 862117  Size: FS
Master Electrical Component List
Service Programming System (SPS) Description
Engine Data Sensors - 5 Volt and Low Reference
OBD II Symbol Description Notice
B+ Bus - Underhood Fuse Block
ACCY/RUN and RUN/START Bus Bars
ACCY/RUN/START, RUN, and START Bus Bars
COILS, RIDE, ECAS, IPC/DIC, FLASH, TBC 1, and PCM B Fuses
PCM I Fuse
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
IGN 0, TBC IG, TBC ACC, FRT WPR, and RAIN Fuses
PCM I Fuse
IGN E, TBC IGN1, BACK UP, BTSI, and TRLR B/U Fuses
Indicators
IGN 0, TBC IG, TBC ACC, FRT WPR, and RAIN Fuses
G107 and G108
DLC and SP205
Figure 2:

Engine Data Sensors - 5 Volt and Low Reference


Object Number: 862125  Size: FS
Master Electrical Component List
Service Programming System (SPS) Description
Engine Data Sensors - Pressure and Temperature
Power, Ground, Serial Data, and MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors - Pressure and Temperature


Object Number: 862126  Size: FS
Master Electrical Component List
Air Intake System Description
Engine Data Sensors - Oxygen Sensors
Engine Data Sensors - 5 Volt and Low Reference
OBD II Symbol Description Notice
Figure 4:

Engine Data Sensors - Oxygen Sensors


Object Number: 862127  Size: FS
Master Electrical Component List
Service Programming System (SPS) Description
Engine Data Sensors - Electronic Throttle Controls and VSS
Engine Data Sensors - Pressure and Temperature
OBD II Symbol Description Notice
ACCY/RUN and RUN/START Bus Bars
Figure 5:

Engine Data Sensors - Electronic Throttle Controls and VSS


Object Number: 862129  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) System Description
Ignition Controls - Ignition Systems
Engine Data Sensors - Oxygen Sensors
OBD II Symbol Description Notice
Vehicle Speed Sensor
Indicators
Figure 6:

Ignition Controls - Ignition Systems


Object Number: 862130  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Ignition Controls - Sensors
Engine Data Sensors - Electronic Throttle Controls and VSS
OBD II Symbol Description Notice
ACCY/RUN and RUN/START Bus Bars
PCM I Fuse
G102, G104, G105, and G109
G102, G104, G105, and G109
G102, G104, G105, and G109
G102, G104, G105, and G109
G102, G104, G105, and G109
G102, G104, G105, and G109
Indicators
Figure 7:

Ignition Controls - Sensors


Object Number: 862133  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Fuel Controls - Fuel Pump Controls and Fuel Injectors
Ignition Controls - Ignition Systems
OBD II Symbol Description Notice
Figure 8:

Fuel Controls - Fuel Pump Controls and Fuel Injectors


Object Number: 862135  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Controls - Evap Controls
Ignition Controls - Sensors
OBD II Symbol Description Notice
ACCY/RUN and RUN/START Bus Bars
B+ Bus - Underhood Fuse Block
G107 and G108
COILS, RIDE, ECAS, IPC/DIC, FLASH, TBC 1, and PCM B Fuses
PCM I Fuse
PCM I Fuse
G201 - 2 of 2, G305 and G306
Figure 9:

Fuel Controls - EVAP Controls


Object Number: 862139  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Controlled/Monitored Subsystem References
Fuel Controls - Fuel Pump Controls and Fuel Injectors
OBD II Symbol Description Notice
ACCY/RUN and RUN/START Bus Bars
Figure 10:

Controlled/Monitored Subsystem References


Object Number: 862141  Size: FS
Master Electrical Component List
Service Programming System (SPS) Description
Transmission Control References - A/T
Fuel Controls - Evap Controls
OBD II Symbol Description Notice
A/C Compressor Controls and Pressure Sensors
A/C Compressor Control and Pressure Sensors
Cruise Control Switch
Starting System
Charging System
Power, Ground, Serial Data, and Gages
Power, Ground, Serial Data, and Gages
Power, Ground, Serial Data, and Encoder Motor
Engine Cooling Schematics
Module Power, Ground, Serial Data, Indicator, Torque and Vehicle Speed Signals
Figure 11:

Transmission Control References - A/T


Object Number: 862143  Size: FS
Master Electrical Component List
Service Programming System (SPS) Description
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
Internal Controls
Internal Controls
Internal Controls
Internal Controls
Automatic Transmission Inputs and Indicator