1998 GMC Jimmy Owner's Manual - Page 82

Endgatekiftgate Endgate-Mounted Spare If your vehicle has an endgate-mounted spare tire arm carrier, you must move the carrier out of the way to open the glass. It can be dangerous,to drive the rear with window, endgate or liftgate open because carbon monoxide (CO)gas can come into yourvehicle. You can't see or smell CO. It can cause unconsciousness and even death. If you must drivewith the rear window, endgate or liftgate open or if electrical wiring or other cable connections must pass through theseal between the body and therear window, endgate or liftgate: Make sure allwindows are shut. h fan on your heating or cooling the system to its highest speed withthe setting on V N . That wforce outsideair into your ET l i vehicle. See "Comfort Controls" the Index. in If you have air outlets on or underthe instrument panel, open them all the way. See "Engine Exhaust''in the Index. Here's how to move the arm: 1. Squeeze the release handle to free the carrier arm. 2. Swing the carrierarm away from the endgate.You may need to give it a slight tug. 3. To latch the carrierarm, swing it toward the endgate. 2-9