2015 Buick Regal Owner Manual - Page 206

Driving and Operating slope. On a level surface or an uphill slope, use 1 (First) gear. Firmly apply the parking brake. Turn the wheels toward the curb for a downhill slope, or away from the curb for an uphill slope. Once the shift lever has been placed into gear with the clutch pedal pressed in, turn the ignition key to LOCK/OFF, remove the key, and release the clutch. 9-25 Engine Exhaust Warning (Continued) . { Warning 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: . There are holes or openings in the vehicle body from damage or aftermarket modifications that are not completely sealed. If unusual fumes are detected or if it is suspected that exhaust is coming into the vehicle: . Parking over Things That Burn { Warning 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... 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. The vehicle exhaust system has been modified, damaged, or improperly repaired. (Continued) 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. .