Chevrolet Silverado: Starting and Operating / Extended Parking
It is best not to park with the vehicle running. If the vehicle is left running,
be sure it will not move and there is adequate ventilation.
See Shifting Into Park and Engine Exhaust.
If the vehicle is left parked and running with the RKE transmitter outside the
vehicle, it will continue to run for up to half an hour.
If the vehicle is left parked and running with the RKE transmitter inside the
vehicle, it will continue to run for up to an hour.
The vehicle could turn off sooner if it is parked on a hill, due to lack of available
fuel.
The timer will reset if the vehicle is taken out of P (Park) while it is running.
If equipped, Active Fuel Management allows the gasoline engine to operate on
either all of its cylinders, or a reduced number of cylinders, depending on the
driving conditions...
Other information:
Adding accessories that change the vehicle's frame, bumper system, height, front
end, or side sheet metal, may keep the airbag system from working properly.
The operation of the airbag system can also be affected by changing, including
improperly repairing or replacing, any parts of the following:
Airbag system, including airbag modules, front or side impact sensors, sensing
and diagnostic module, or airbag wiring
Front seats, including stitching, seams, or zippers
Seat belts
Steering wheel, instrument panel, overhead console, ceiling trim, or pillar
garnish trim
Inner door seals, including speakers
Your dealer and the service manual have information about the location of the
airbag modules and sensors, sensing and diagnostic module, and airbag wiring along
with the proper replacement procedures...
If the vehicle is equipped with OnStar and has an active service plan, additional
data may be collected and transmitted through the OnStar system. This includes information
about the vehicle’s operation; collisions involving the vehicle; the use of the
vehicle and its features, including infotainment; and the location and approximate
GPS speed of the vehicle...