GM Service Manual Online
For 1990-2009 cars only
Makes
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GMC_Truck
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2003
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Sonoma Pickup - 2WD
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Body and Accessories
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Stationary Windows
🢒 Defogger Schematics
Master Electrical Component List
Rear Window Defogger Description and Operation
Ign ACC, RUN and RAP Bus Bar
HVAC I Fuse
ILLUM Fuse 12
G203 and G204 - Pickup
G203 and G204 - Pickup
G203 and G204 - Utility w/Manual A/C
G420, G450 and S427 - Utility and Crew Cab
IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays
B+ Bus Bar
ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays