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

Headlamp Controls


Object Number: 1470848  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Headlamps
Ambient Air Temperature Sensor, Sunload Sensor, Coolant Level Switch, and DIC
Class 2 Serial Data Bus (LHD) - 2 of 2
Fog Lamps - Front
G200
Headlamps
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Headlamps
Underhood Fuse Block B+ Bus - 1 of 2
Figure 2:

Headlamps


Object Number: 1470849  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Daytime Running Lamps (DRL) - Export w/T65
Headlamp Controls
Headlamp Controls
Headlamp Controls
Position, Park, and Tail Lamps - Export
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
G104 - 2 of 2
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
G104 - 2 of 2
Position, Park, and Tail Lamps - Export
Figure 3:

Daytime Running Lamps (DRL) - Export w/T65


Object Number: 1470851  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Daytime Running Lamps (DRL) - Domestic
Headlamps
Headlamp Controls
Headlamp Controls
Underhood Fuse Block B+ Bus - 1 of 2
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Figure 4:

Daytime Running Lamps (DRL) - Domestic


Object Number: 1470852  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Daytime Running Lamps (DRL) - Export w/T65
Underhood Fuse Block B+ Bus - 2 of 2
G104 - 1 of 2
G104 - 1 of 2
Underhood Fuse Block - WASH NOZ, STRG CTLS, and IGN MOD/MAF Fuses
Underhood Fuse Block - WASH NOZ, STRG CTLS, and IGN MOD/MAF Fuses
Class 2 Serial Data Bus (LHD) - 2 of 2
G104 - 1 of 2
G200
G104 - 1 of 2