GM Service Manual Online
For 1990-2009 cars only

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

Keyless entry allows you to operate the following components:

    • The door locks
    • The rear compartment lid release
    • The illuminated entry lamps
    • The panic alarm (instant alarm)

The keyless entry system has the following main components:

    • The transmitters
    • The remote control door lock receiver (RCDLR)

When you press a button on a transmitter, the transmitter sends a signal to the remote control door lock receiver. The RCDLR interprets the signal and activates the requested function via a class 2 message over the serial data line.

Unlock Driver's Door Only

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

    • Unlock the driver door only.
    • Illuminate the interior lamps when the ambient light is low for approximately 30 seconds or until a door is opened.
    • Illuminate the exterior lights for approximately 30 seconds or until a door is opened (if selected ON in personalization).
    • Disarm the content theft deterrent (CTD) system (if equipped).
    • Recall the memory seat, the memory mirror, and the telescopic steering column (if equipped) positions for that driver.
    • Recall the temperature, the fan speed, and the mode settings for the comfort control for that driver.
    • Recall the radio presets, tone volume, playback mode (AM/FM, tape or CD), last displayed station, compact disc position, and tape direction for that driver.

Unlock All Doors (Second Operation)

Momentarily press the UNLOCK button a second time (within 2 seconds of the first press) in order to perform the following functions:

    • Unlock the remaining doors.
    • Illuminate the interior lamps when the ambient light is low for approximately 30 seconds or until a door is opened.
    • Illuminate the exterior lights for approximately 30 seconds or until a door is opened (if selected ON in personalization).
    • Disarm the content theft deterrent (CTD) system (if equipped).

Lock All Doors

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

    • Lock all of the doors.
    • Immediately turn off the interior lamps.
    • Flash the park lamps (if selected ON in personalization).
    • Chirp the horn (if selected ON in personalization).
    • Arm the content theft deterrent (CTD) system.

Rear Compartment Lid Release

If the vehicle transaxle is in PARK or NEUTRAL and the ignition is in the OFF position, a single press of the rear compartment release button will open the rear compartment lid. The interior lamps will not illuminate.

Alarm

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

    • Illuminates the interior lamps.
    • Flashes the headlamps (if turned ON in personalization).
    • Pulses the horn for 30 seconds or until one of the following conditions is met:
       - The panic button is pressed again.
       - The ignition switch is turned to the RUN position with a valid key.
       - The vehicle is unlocked with the key.

Keyless Entry Personalization

The exterior lamps and the horn chirp may be personalized as part of the remote activation verification feature. The headlamps may be personalized as part of the keyless entry alarm feature. For mode descriptions and programming instructions, refer to Driver Personalization in Personalization.

Rolling Code

The keyless entry system uses rolling code technology. Rolling code technology prevents anyone from recording the message sent from the transmitter and using the message in order to gain entry to the vehicle. The term "rolling code" refers to the way that the keyless entry system sends and receives the signals. The transmitter sends the signal in a different order each time. The transmitter and the RCDLR are synchronized to the appropriate order. If a programmed transmitter sends a signal that is not in the order that the RCDLR expects, then the keyless entry system will not function.