GMC SIERRA 2020 Owner's Manual page 24

To start the vehicle:
Transmitter Pocket without Bucket
Seats (Lower Compartment)
Transmitter Pocket with Bucket
Seats
1. Place the transmitter in the
transmitter pocket/insert.
2. With the vehicle in P (Park) or
N (Neutral) press the brake
pedal and ENGINE
START/STOP.
Replace the transmitter battery
as soon as possible.
Keys, Doors, and Windows
Battery Replacement
Warning
Never allow children to play with
the RKE transmitter. The
transmitter contains a small
battery, which can be a choking
hazard. If swallowed, internal
burns can occur, resulting in
severe injury or death. Seek
medical attention immediately if a
battery is swallowed.
Warning
To avoid personal injury, do not
touch metal surfaces on the RKE
transmitter when it has been
exposed to extreme heat. These
surfaces can be hot to the touch
at temperatures above 59 °C
(138 °F).
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