GMC 2003 Safari Owner's Manual page 93

To fully open the rear
doors, push in on the
clip and lift the check
assembly up off the
mounting bracket.
Do this on each door. Replace the check assemblies on
the mounting brackets before closing the doors.
It can be dangerous to drive with the rear
glass open because carbon monoxide (CO)
gas can come into your vehicle. You can't see
or smell CO. It can cause unconsciousness
and even death. If you must drive with the rear
glass open or if electrical wiring or other cable
connections must pass through the seal
between the body and the rear glass:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See "Climate Controls"
in the Index.
instrument panel, open them all the way.
If you have air outlets on or under the
See "Engine Exhaust" in the Index.
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