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

Module Power, Ground, Serial Data, Blower Motor, and Coolant Bypass Valve


Object Number: 876474  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Compressor Controls
G101, G103, G106 and G110
G102, G104, G105 and G107
G201 - 1 of 2
Data Link Connector and SP205
O2, ETC, ENG I, SIR, HVAC, 4WD Fuses
HVAC I, BRAKE, and TBC RUN Fuses
HVAC I, BRAKE, and TBC RUN Fuses
LGM/DSM, OH BATT/ONSTAR, RADIO, HVAC B
LGM/DSM, OH BATT/ONSTAR, RADIO, HVAC B
TRAILER, ABS, ATC, BLOWER, ELEC BRK, CIGAR, ST/LP, VEH CHMSL, and VEH STOP fuses
Figure 2:

Compressor Controls


Object Number: 899306  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Air Delivery/Temperature Actuators
Module Power, Ground, Serial Data, Blower Motor, and Coolant Bypass Valve
G102, G104, G105 and G107
Data Link Connector and SP205
G101, G103, G106 and G110
IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses
IGN E TBC IGN 1, BACK UP, BTSI, and TRLR B/U Fuses
B+ Bus - Underhood Fuse Block
Figure 3:

Air Delivery/Temperature Actuators


Object Number: 876481  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Air Temperature Sensors
Compressor Controls
O2, ETC, ENG I, SIR, HVAC, 4WD Fuses
HVAC I, BRAKE, and TBC RUN Fuses
Figure 4:

Air Temperature Sensors


Object Number: 876482  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Ambient Light/Sunload Sensor
Air Delivery/Temperature Actuators
G302 - 1 of 2, G303 and G304
Figure 5:

Ambient Light/Sunload Sensor


Object Number: 876485  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear Mode Control and Blower Motor Aux - Body Type VIN 3
Air Temperature Sensors
Figure 6:

Rear Mode Control and Blower Motor Aux - Body Type VIN 3


Object Number: 876492  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC with RSA - Body Type VIN 6
Ambient Light/Sunload Sensor
G201 - 1 of 2
G201 - 1 of 2
Data Link Connector and SP205
LGM/DSM, OH BATT/ONSTAR, RADIO, HVAC B
LGM/DSM, OH BATT/ONSTAR, RADIO, HVAC B
O2, ETC, ENG I, SIR, HVAC, 4WD Fuses
HVAC I, BRAKE, and TBC RUN Fuses
HVAC I, BRAKE, and TBC RUN Fuses
Traction Control Switch, Olds
Figure 7:

Rear HVAC with RSA - Body Type VIN 6


Object Number: 876451  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Steering Wheel Controls
Rear Mode Control and Blower Motor Aux - Body Type VIN 3
Data Link Connector and SP205
G401, G402 and G403
G201 - 1 of 2
SUNROOF, AUX PWR2, RR HVAC, AUX PWR1, TBC2, TBC3, TBC4 Fuses
LGM/DSM, OH BATT/ONSTAR, RADIO, HVAC B
Figure 8:

Steering Wheel Controls


Object Number: 876470  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC with RSA - Body Type VIN 6
SIR Caution for Zoning
Steering Wheel Controls