1999 Pontiac Montana Owner's Manual - Page 128

yellowblue CAUTION: It can be dangerous to drive with the liftgate 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 liftgate open or if electrical wiring or other cable connections must pass through the seal between the body and the liftgate: 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 bi-level (outside air button is pressed). 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. Theft Vehicle theft is big business, especially in some cities. Although your vehicle has a number of theft-deterrent features, we know that nothing we put on it can make it impossible to steal. However, there are ways you can help. Key in the Ignition If you leave your vehicle with the keys inside, it's an easy target for joy riders or professional thieves -- so don't do it. When you park your vehicle and open the driver's door, you'll hear a chime reminding you to remove your key from the ignition and take it with you. Always do this. Your steering wheel will be locked, and so will your ignition and transaxle. Also remember to lock the doors. 2-32