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

Headlights and Power Distribution


Object Number: 505935  Size: FS
Lighting Systems Components
Headlamps Control
FOG RLY, F/PMP RLY, DLR/EXT LTS, EXT LTS, A/C RLY (CMPR), PCM and HORN RLY Fuses
AIR PMP RLY, FUEL INJ, TRANS SOL, A/C RLY (Coil), OXY SEN, DFI MDL, ENG DEVICES, FAN CONT #1, FAN CONT #2 & #3 Fuses, and IGN and Air Pump Relays
Headlamps Control
G101 (2 of 2)
Headlamps Control
Headlamps Control
Headlights/Daytime Running Lights (DRL) Circuit Description
Figure 2:

Headlamps Control


Object Number: 505936  Size: FS
Lighting Systems Components
Headlights/Daytime Running Lights (DRL) Circuit Description
Headlights and Power Distribution
Handling ESD Sensitive Parts Notice
Power, Grounds and RAP Relay
Headlights and Power Distribution
Headlights and Power Distribution
Headlights and Power Distribution
G201 (1 of 2)
LH HTD ST/BCM, DR LK, PWR MIR and CLSTR/BCM Fuses, HEADLAMP and RETAINED ACCSRY PWR Relays, and RETAINED ACCSRY PWR Circuit Breaker