Colorado 4WD V8-5.3L (2010)
Keyless Entry: Description and Operation
Keyless Entry System Description and Operation
The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the door locks to unlock the vehicle. Keyless
entry will lock/unlock the doors when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending
a radio frequency to the body control module (BCM). The BCM interprets the signal and activates the requested function. A low transmitter or vehicle
battery or radio frequency (RF) interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system
malfunction. High RF traffic areas may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following
components:
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Door locks
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Vehicle locator/panic alarm
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Illuminated entry lamps
The keyless entry system has the following components:
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Keyless entry transmitters
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BCM
Keyless Entry Transmitters
The keyless entry transmitters are used to lock and unlock the vehicle door while away from the immediate are of the vehicle. Transmitters will operate
at a distance of up to 20 m (65 feet), except Japanese and South Korean vehicles, which are limited to 4 m (13 feet). Up to 4 transmitters may be
programmed to a single vehicle.
Body Control Module (BCM)
The BCM is a multifunction module that operates both the keyless entry system. When an RF message is received from a keyless entry transmitter, the
BCM interprets this signal performs the specific function, i.e. door lock, door unlock, or vehicle locate.
Unlock Driver Door Only
Momentarily press the transmitter UNLOCK button in order to perform the following functions:
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Unlock only the driver door
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Illuminate the interior lamps for a determined length of time, or until the ignition is turned ON
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Flash the exterior lights, if enabled through personalization
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Disarm the content theft deterrent (CTD) system, if equipped
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Deactivate the CTD system when in the alarm mode
Unlock All Doors - Second Operation
Momentarily press the transmitter UNLOCK button a second time, within 5 seconds of the first press, to perform the following function:
Unlock the remaining doors.
Lock All Doors
Press the transmitter LOCK button to perform the following functions:
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Lock all vehicle doors
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Immediately turn OFF the interior lamps
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Flash the exterior lights, if enabled through personalization
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Chirp the horn, if enabled through personalization
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Arm the content theft deterrent (CTD) system, if equipped
Vehicle Locator/Panic Alarm
A single press of the panic button performs the following functions:
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Pulses the horn three times
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Flashes the parking lamps three times
A press and hold of the panic button performs the following functions:
