1998 Pontiac Bonneville Owner's Manual - Page 90
1998 Pontiac Bonneville Manual
Page 90 highlights
Parking Over Things That Burn Engine Exhaust Things that can burn could touchhot exhaust parts under yourvehicle and ignite.Don't park over papers, leaves, grass or other thingsthat dry can burn. Engine exhaust can It contains the gas kill. carbon monoxide (CO),which you can't see or smell. It can cause unconsciousness death. and You might have exhaust coming if: in Your exhaust system sounds strange or different. 0 Your vehicle gets rusty underneath. 0 Your vehicle was damaged in collision. a Your vehicle was damaged when driving over high p t on the roador over road debris. i s n Repairs weren't done correctly. Your vehicle or exhaust systemhad been modified improperly. If you ever suspect exhaust is coming into your vehicle: 0 Drive it only with all the windows down to blow out anyCO; and 0 Have your vehicle fixed immediately. 2-33