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

High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher


Object Number: 538743  Size: FS
Lighting Systems Components
Exterior Lights Circuit Description
Instrument Cluster Turn Signal Indicators
Power and Grounding Connector End Views
B+ Bus Bar
STOP LP, HAZ LP, TURN Fuses and Turn and Hazard Switch
B+ Bus Bar
IGN C, IGN A Fuses and Ignition and Start Switch
Cruise Control Module and PCM/VCM
Inside Rear View Mirror and Visor Vanity Mirror Lamps
G102
G202
Instrument Cluster Turn Signal Indicators
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
G205 and G206
G205 and G206
Figure 2:

Instrument Cluster Turn Signal Indicators


Object Number: 538747  Size: FS
Lighting Systems Components
Exterior Lights Circuit Description
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher
LT TURN, RT TURN Fuses and Instrument Cluster
Power
Handling ESD Sensitive Parts Notice
G203 and G204
Figure 3:

Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)


Object Number: 538753  Size: FS
Lighting Systems Components
Exterior Lights Circuit Description
Park, Marker, License and Turn Signal Lamps (Rear)
Instrument Cluster Turn Signal Indicators
Instrument Cluster Turn Signal Indicators
Instrument Cluster Turn Signal Indicators
High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher
High Mount Stoplamp, Multifunction Switch (Turn Signal Switch) and Turn Signal Flasher
Power and Grounding Connector End Views
Park and Marker Lamps (Front)
Park and Marker Lamps (Front)
Horns Schematics
Park, Marker, License and Turn Signal Lamps (Rear)
Park, Marker, License and Turn Signal Lamps (Rear)
Figure 4:

Park, Marker, License and Turn Signal Lamps (Rear)


Object Number: 538755  Size: FS
Lighting Systems Components
Exterior Lights Circuit Description
Park and Marker Lamps (Front)
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
B+ Bus Bar
Power and Grounding Connector End Views
FR PRK, LR PRK, and RR PRK Fuses
Power and Grounding Connector End Views
Headlamp Switch
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Headlamp Switch and HDLP SW, PARK LP Fuses
G402, G422 and G475
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
G402, G422 and G475
Figure 5:

Park and Marker Lamps (Front)


Object Number: 538760  Size: FS
Lighting Systems Components
Exterior Lights Circuit Description
Park, Marker, License and Turn Signal Lamps (Rear)
B+ Bus Bar
Power and Grounding Connector End Views
Power and Grounding Connector End Views
FR PRK, LR PRK, and RR PRK Fuses
Headlamp Switch
Body Control System Connector End Views
Handling ESD Sensitive Parts Notice
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)
Horns Schematics
Turn Signal Lamps (Front) and Turn Signal Fuses (Rear)