Buick 2004 Park Avenue - Manual (Page 227)

• Put on extra clothing or wrap a blanket around you.
If you have no blankets or extra clothing, make
body insulators from newspapers, burlap bags, rags,
floor mats — anything you can wrap around
yourself or tuck under your clothing to keep warm.
You can run the engine to keep warm, but be careful.
{ CAUTION:
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide)
gas to get inside. CO could overcome you and
kill you. You can not see it or smell it, so you
might not know it is in your vehicle. Clear away
snow from around the base of your vehicle,
especially any that is blocking your exhaust pipe.
And check around again from time to time to be
sure snow does not collect there.
Open a window just a little on the side of the
vehicle that is away from the wind. This will help
keep CO out.
Run your engine only as long as you must. This saves
fuel. When you run the engine, make it go a little faster
than just idle. That is, push the accelerator slightly.
This uses less fuel for the heat that you get and it keeps
the battery charged. You will need a well-charged battery
to restart the vehicle, and possibly for signaling later on
with your headlamps. Let the heater run for a while.
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