2009 Hummer H3T Alpha Owner's Manual - Page 97

Features and Controls 2-31 Parking the Vehicle (Manual Transmission) If the vehicle has a manual transmission, before you get out of the vehicle, move the shift lever into R (Reverse), and firmly apply the parking brake. Once the shift lever has been placed into R (Reverse) with the clutch pedal pressed in, turn the ignition key to LOCK/OFF, remove the key and release the clutch. If you are parking on a hill, or if the vehicle is pulling a trailer, see Towing a Trailer on page 4-42. Engine Exhaust CAUTION (Continued) { CAUTION Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. Exposure to CO can cause unconsciousness and even death. Exhaust may enter the vehicle if: • The vehicle idles in areas with poor ventilation (parking garages, tunnels, deep snow that may block underbody airflow or tail pipes). • The exhaust smells or sounds strange or different. • The exhaust system leaks due to corrosion or damage. (Continued) • The vehicle's exhaust system • has been modified, damaged or improperly repaired. There are holes or openings in the vehicle body from damage or after-market modifications that are not completely sealed. Parking Over Things That Burn If unusual fumes are detected or if it is suspected that exhaust is coming into the vehicle: • Drive it only with the windows completely down. • Have the vehicle repaired immediately. Never park the vehicle with the engine running in an enclosed area such as a garage or a building that has no fresh air ventilation. { CAUTION Things that can burn could touch hot exhaust parts under the vehicle and ignite. Do not park over papers, leaves, dry grass, or other things that can burn.