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

Turn Signal/Hazard Flasher Module


Object Number: 1470860  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Underhood Fuse Block B+ Bus - 2 of 2
G104 - 1 of 2
G104 - 1 of 2
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block - WASH NOZ, STRG CTLS, and IGN MOD/MAF Fuses
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Class 2 Serial Data Bus (LHD) - 2 of 2
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Indicators
G200
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Power, Ground, and Serial Data - 1 of 2
G200
Figure 2:

Turn Signal Lamps - Domestic and Export, Repeataer Lamps - Export w/T9D


Object Number: 1589588  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Turn Signal/Hazard Flasher Module
Turn Signal/Hazard Flasher Module
Turn Signal/Hazard Flasher Module
G104 - 1 of 2
Turn Signal/Hazard Flasher Module
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Headlamps
G104 - 1 of 2
Turn Signal/Hazard Flasher Module
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Headlamps
Turn Signal/Hazard Flasher Module
Turn Signal/Hazard Flasher Module
G402 - 2 of 2
G401
G402 - 2 of 2
G401
Figure 3:

Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)


Object Number: 1589716  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
License Lamps, Rear Marker Lamps, and Tail Lamps
Turn Signal Lamps - Domestic and Export, and Repeator Lamps - Export w/T90
Headlamp Controls
Underhood Fuse Block B+ Bus - 1 of 2
Underhood Fuse Block - PARK LAMP Relay/Fuses and DIMMING Fuse
License Lamps, Rear Marker Lamps, and Tail Lamps
License Lamps, Rear Marker Lamps, and Tail Lamps
Class 2 Serial Data Bus (LHD) - 1 of 2
G200
G104 - 1 of 2
G104 - 2 of 2
Headlamps
Turn Signal/Hazard Flasher Module
License Lamps, Rear Marker Lamps, and Tail Lamps
G104 - 1 of 2
Headlamps
G104 - 2 of 2
Figure 4:

License Lamps, Rear Marker Lamps, and Tail Lamps


Object Number: 1470865  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Position Lamp Controls - Export w/T79
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
G402 - 2 of 2
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
G402 - 2 of 2
G402 - 2 of 2
Front Marker Lamps (TT7) and Front Park Lamps (w/o TT7)
G401
G401
Figure 5:

Position Lamp Controls - Export w/T79


Object Number: 1470867  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Position, Park, and Tail Lamps - Export
License Lamps, Rear Marker Lamps, and Tail Lamps
Headlamp Controls
Underhood Fuse Block - PARK LAMP Relay/Fuses and DIMMING Fuse
Underhood Fuse Block - PARK LAMP Relay/Fuses and DIMMING Fuse
Class 2 Serial Data Bus (LHD) - 2 of 2
Position, Park, and Tail Lamps - Export
Position, Park, and Tail Lamps - Export
Position, Park, and Tail Lamps - Export
Headlamp Controls
G200
Position, Park, and Tail Lamps - Export
Position, Park, and Tail Lamps - Export
Position, Park, and Tail Lamps - Export
Left Rear Fuse Block B+ Bus
Figure 6:

Position , Park, and Tail Lamps - Export


Object Number: 1470868  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Stop Lamps, BPP Sensor, and BAS Fuse/Relay - Domestic and Export
Position Lamp Controls - Export w/T79
Position Lamp Controls - Export w/T79
Position Lamp Controls - Export w/T79
G402 - 2 of 2
G402 - 2 of 2
Position Lamp Controls - Export w/T79
Position Lamp Controls - Export w/T79
G401
G401
Position Lamp Controls - Export w/T79
Position Lamp Controls - Export w/T79
Headlamps
G104 - 2 of 2
Headlamps
Figure 7:

Stop Lamps, BPP Sensor, and BAS Fuse/Relay - Domestic and Export


Object Number: 1470870  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Backup Lamps
Position, Park, and Tail Lamps - Export
Left Rear Fuse Block B+ Bus
G402 - 2 of 2
BPP Sensor, Switches, and Indicators - 2.8L/3.6L (LP1/LY7)
G402 - 2 of 2
G402 - 2 of 2
G402 - 2 of 2
G402 - 2 of 2
G401
G401
G401
Figure 8:

Backup Lamps


Object Number: 1470873  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Control Module References
Stop Lamps, BPP Sensor, and BAS Fuse/Relay - Domestic and Export
Left Rear Fuse Block B+ Bus
Class 2 Serial Data Bus (LHD) - 2 of 2
G140, G141, and G142 (LS2)
Inside Rearview Mirror (VEI)
G402 - 2 of 2
G402 - 2 of 2