GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2001
🢒
Sonoma Pickup - 4WD
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Body and Accessories
🢒
Stationary Windows
🢒 Scan Tool Data Definitions
HVAC Control Module
Rear Defog Switch:
The scan tool displays On or Off. When the rear defogger switch is pressed, the scan tool will display On. When the switch is released, the scan tool displays Off.