1997 GMC Savana Van Owner's Manual - Page 93

Rear Swing-Out Window To close the window, pull the latch toward you and push down on the latch to lock it. Your rear swing-out windows work the same way, but the latch is at the bottom edge of the window. It can be dangerous to drive with the rear swing-out windowsor reardoor(s) 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 swing-out windows or reardoor(s) open or if electrical wiring or other cable connectionsmust pass through the seal betweenthe body and therear swing-out windows or reardoor(s): 0 Make sure all windows are shut. Turn the fan on your heatingor cooling system to its highest speed with the setting on VENT, HEAT, BLEND or DEF. Additionally, on vehicles withheatingair conditioning systems, NORM A/C or BI-LEV A/C can be used. That will force outsideair into your vehicle. See "Comfort Controls" inthe Index. I you have air outlets on or under the f instrument panel, open them all the way. See "EngineExhaust" in the Index. 2-31