GM Service Manual Online
For 1990-2009 cars only

Object Number: 883066  Size: FS
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