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

Rear Window Defogger Controls


Object Number: 1464586  Size: FS
Master Electrical Component List
Rear Window Defogger Description and Operation
Control Module References
Defogger Grid and Control
BTSI, B/U LP, O2A, O2B, SEO IGN, TBC IGN 1, and TRL B/U Fuses
Ignition Switch - ACCY/RUN and RUN/START Busses, and IGN B Fuse
B+ Bus - 1 of 2
Power, Ground, DLC, and Splice Pack SP205
Defogger Grid and Control
Figure 2:

Defogger Grid and Ground


Object Number: 1464587  Size: FS
Master Electrical Component List
Rear Window Defogger Description and Operation
Control Module References
Rear Window Defogger Controls
Rear Window Defogger Controls
G410 1 of 3
G410 1 of 3
G410 1 of 3
G306
G306