Remote Vehicle Start - GMC Chevrolet Silverado 2500HD 2021 Owner's Manual

20 Keys, Doors, and Windows

Remote Vehicle Start

If equipped with the remote start feature,
the climate control system will come on
when the vehicle is started remotely,
depending on the outside temperature.
The rear defog and heated and ventilated
seats, if equipped, may also come on. See
Heated and Ventilated Front Seats 0 49 and
Vehicle Personalization 0 126.
If equipped, the automatic heated steering
wheel may also come on. See Heated
Steering Wheel 0 96.
Laws in some communities may restrict the
use of remote starters. Check local
regulations for any requirements on remote
starting of vehicles.
Do not use remote start if the vehicle is low
on fuel. The vehicle may run out of fuel.
The vehicle cannot be remote started if:
The RKE transmitter is inside the vehicle
or if the key is in the ignition.
The hood is not closed.
There is an emission control system
malfunction and the lamp is on.
The ignition is in any mode other
than off.
The hazard warning flashers are on.
Two remote starts or a remote start with
an extension have been used.
The vehicle is not in P (Park).
The engine will turn off during a remote
vehicle start if:
The coolant temperature gets too high.
The oil pressure gets low.
The RKE transmitter range may be reduced
while the vehicle is running.
Other conditions can affect the performance
of the transmitter. See Remote Keyless Entry
(RKE) System 0 10.
Starting the Engine Using Remote Start
1. Press and release .
2. Immediately press and hold
turn signal lamps flash or for at least
four seconds.
When the vehicle starts, the parking
lamps will turn on. The doors will be
locked and the climate control system
may come on.
The engine will continue to run for
15 minutes. After 30 seconds, repeat
Steps 1 and 2 for a 15-minute time
extension.
Turn the ignition on to operate the vehicle.
Extending Engine Run Time
The engine run time can be extended by
15 minutes, for a total of 30 minutes,
if during the first 15 minutes Steps 1 and 2
are repeated while the engine is still
running. An extension can be requested
30 seconds after starting.
A maximum of two remote starts, or a
single start with an extension, is allowed
between ignition cycles.
The vehicle's ignition must be turned on and
then back off to use remote start again.
Canceling a Remote Start
To cancel a remote start, do one of the
following:
until the
Press and hold
turn off.
Turn on the hazard warning flashers.
Turn the ignition on and then off.
until the parking lamps