GMC 1995 Jimmy Owner's Manual page 71

NOTICE:
After you've used the coolant heater, be sure to store the cord as
it was before to keep it away from moving engine parts. If you
don't, it could be damaged.
How long should you keep the coolant heater plugged in? The answer
depends on the weather, the kind of oil you have, and some other things.
Instead of trying to list everything here, we ask that you contact your
GM
dealer in the area where you'll be parking your vehicle. The dealer can give
you the best advice for that particular area.
Automatic Transmission
There are several
different positions for
your shift lever.
If your vehicle is equipped with automatic transmission, it now features an
electronic shift position indicator within the instrument cluster. This display
must be powered anytime the shift lever is capable of being moved out of
the PARK (P) position. This means that if your key is in the OFF position,
but not locked, there will be a small current drain on your battery which
could discharge your battery over a period of time. If you have a need to
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