Geo 1995 Prizm Owner's Manual page 105

Overdrive Off Light
Rear Window Defogger Light
If you have an automatic
transaxle with
OVERDRIVE, this amber
light appears on your
instrument cluster. The light
will come on whenever you
turn off the OVERDRIVE.
This amber light will come
on whenever the rear
window defogger is on. See
"Rear Window Defogger"
in the Index.
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