1993 GMC Sonoma Owner's Manual - Page 78

Engine Exhaust I CAUTION Engine exhaust can kin. I A which you can't see It contains the gas carbon monoxide (CO), or smell. It can cause unconsciousness and in if: death, You mighthaveexhaustcoming Your exhaust system sounds strange or different. Your vehiclegets rusty underneath. * Your vehiclewasdamaged in a collision. * Your vehiclewasdamagedwhendrivingoverhighpoints road or over road debris. m on the Repairs weren'tdonecorrectly. Your vehicle a or exhaustsystemhadbeenmodified improperly. I you ever suspect exhaust is coming into your vehicle: f m Drive it onlywith all thewindowsdown to blow outany CO; and * Have it fixed immediately. Running Your Engine While You're Parked (Automatic Transmission) It'sbetternot to parkwiththeenginerunning.Butifyoueverhaveto,here aresomethingstoknow. CAUTION I A ' Idling the engine with the air system control off could allow dangerous exhaust into your vehicle. (See the earlier Caution under "Engine Exhaust.") Also, idling in a closed-in place can let deadly carbon monoxide (CUI into your vehicle even if the fan switch is at the highest setting. Ona place thiscanhappen is a garage. Exhaust-with C h n come easily. NEVER parkin a garagewith the enginerunning. Another closed-inplacecan be a blizzard. (See "Bliuard'~ in the Index.) . 2-26