GM Service Manual Online
For 1990-2009 cars only

The keyless entry system is a supplementary vehicle entry device. Radio frequency interference or discharged batteries may disable the system.

Keyless entry allows you to operate the following features:

    • The door locks.
    • The illuminated entry lamps.
    • The panic alarm.

The keyless entry system has the following main components:

    • The transmitters.
    • The remote function actuator (RFA) module -- When you press a button on the transmitter, the transmitter sends a signal to the RFA module. The RFA module receives the signal and sends a GMLAN serial data message requesting the appropriate function.

Unlock Driver Door Only

Momentarily press the UNLOCK button in order to perform the following functions:

    • Unlock the driver door only.
    • Illuminate the interior lamps for approximately 20 seconds or until the ignition is turned ON.
    • Flash the turn signal lamps (if the ignition is turned OFF and the doors are closed).
    • Identify the driver to the driver information centre (DIC). The DIC will then revert to the station presets, the last station, the last volume settings, and the last playback mode used by that driver.

Unlock Front Doors - Second Operation

Momentarily press the UNLOCK button a second time, within 5 seconds of the first press, in order to perform the following functions:

    • Unlock the passenger door.
    • Illuminate the interior lamps for approximately 20 seconds or until the ignition is turned ON.

Lock Front Doors

Press the LOCK button in order to perform the following functions:

    • Lock the front doors.
    • Immediately turn OFF the interior lamps.
    • Flash the turn signal lamps (if the ignition is OFF and the doors are closed).
    • Chirp the horn (if the ignition is OFF and the doors are closed).

Panic Alarm Function

A single press of the panic button performs the following functions:

    • Illuminates the interior lamps.
    • Pulses the horn.
    • Flashes the daytime running lamps for 2 minutes or until the following conditions occur:
       - The panic button is pressed again.
       - The ignition switch is turned to the RUN position with a valid key.

Press and hold the panic button performs the following functions:

    • The horn will sound continuously.
    • The turn signal lamps will flash.

This will continue until the button is pressed again or until the key is placed in the ignition.