2003 Pontiac Sunfire Owner's Manual - Page 98
2003 Pontiac Sunfire Manual
Page 98 highlights
Parking Over Things That Burn '-lgine Exhaust - Engine exhaust can kill. It contains the gas carbon monoxide (CO), which you can't see or smell. It can causeunconsciousness and death. You might have exhaust coming in if: 0 Your exhaust system sounds strange or different. Your vehicle gets rusty underneath. 0 Your vehicle was damaged in a collision. Your vehicle was damaged whendriving over high pointson the road or over road debris. 0 Repairs weren't done correctly. 0 Your vehicle or exhaust system had been modified improperly. If you ever suspect exhaust is cominginto your vehicle: 0 Drive it only with all the windows down to blow outany CO; and Have your vehicle fixed immediately. II that can burn could touch hotexhaust parts under your vehicle and ignite. Don't park over papers, leaves, dry grass or other things thatcanburn. -- ...ngs 2-31