Chevrolet Silverado: Engine Exhaust / Running the Vehicle While Parked
It is better not to park with the engine running.
If the vehicle is left with the engine running, follow the proper steps to be
sure the vehicle will not move. See Shifting Into Park and Engine Exhaust.
If parking on a hill and pulling a trailer, see Driving Characteristics and Towing
Tips.
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:
The vehicle idles in areas with poor ventilation (parking garages,
tunnels, deep snow that may block underbody airflow or tail pipes)...
Other information:
If equipped, the ignition is on or in ACC/ACCESSORY and the power door lock switch
is pressed with the driver door open, all the doors will lock and only the driver
door will unlock.
If the vehicle is off and locking is requested while a door is open, when all
doors are closed the vehicle will check to the Keyless Access function (if equipped)...
Follow these rules for everyone's protection.
There are additional things to know about seat belts and children, including
smaller children and infants. If a child will be riding in the vehicle, see Older
Children or Infants and Young Children. Review and follow the rules for children
in addition to the following rules...
Categories

Rear-Facing Infant Restraint
A rear-facing child restraint provides restraint with the seating surface against
the back of the infant.
read more