2002 GMC Savana Van Owner's Manual - Page 87

Rear Doors CAUTION: It can be dangerous to drive with the rear door(s) or rear swing-out windows 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. CAUTION: (Continued) CAUTION: (Continued) If you must drive with the rear door(s) or rear swing-out windows open or if electrical wiring or other cable connections must pass through the seal between the body and the rear door(s) or rear swing-out windows: D Make sure all other windows are shut. D Turn the fan on your heating or cooling system to its highest speed with the setting on VENT, HEAT or DEFOG. Additionally, on vehicles with heating/air conditioning systems, MAX A/C or BI-LEVEL A/C can be used. That will force outside air into your vehicle. See "Comfort Controls" in the Index. D If you have air outlets on or under the instrument panel, open them all the way. See "Engine Exhaust" in the Index. 2-16