Chevrolet 4500 HD 2023 Manual page 14

The remote control unit works within a 10 m
(33 ft) radius of the cab center as indicated
in the figure. The actual distance over which
the unit operates may vary depending on
conditions.
Unlocking and Locking the Doors
Remote Control Unit
Unlocking
Press the unlock button (2) of the remote
control unit for 1 second or longer. The
vehicle's keyless entry system causes the
right and left turn signal lights to
simultaneously flash twice upon receiving
the signals from the remote control unit.
Locking
Press the lock button (1) of the remote
control unit for 1 second or longer. The
vehicle's keyless entry system causes the
Keys, Doors, and Windows
right and left turn signal lights to
simultaneously flash once upon receiving
the signals from the remote control unit.
Should you lose the remote control unit,
please contact your dealer.
After locking the doors using the remote
control unit, be sure to check that they are
locked by pulling the door handles.
Avoid getting water on the remote control
unit, dropping it, hitting it against another
object, or stepping on it; otherwise, the
remote control unit could malfunction.
Do not leave the remote control unit on the
dashboard or any other surface where the
unit might be exposed to high temperatures
(exceeding 60°C/140°F). Doing so may result
in shorter battery life or malfunction of the
remote control unit.
If the keyless entry system fails to operate
normally, lock and unlock the doors using
the key and have the system inspected by
your dealer.
The lock or unlock buttons on the remote
control unit must be fully pressed for more
than 1 second to work.
13