GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Sonoma Pickup - 4WD 🢒 Body and Accessories 🢒 Keyless Entry 🢒 Keyless Entry System Operation

Unlocking the Doors
  1. Press the UNLOCK button on the transmitter once in order to unlock the driver's side door.
  2. Press the UNLOCK button on the transmitter a second time, within 3 seconds, in order to unlock the remaining doors.

    3. This second press of the unlock button also unlocks the liftgate on utility vehicles equipped with this feature.

Locking the Doors
  1. Press the LOCK button on the transmitter in order to lock all of the vehicle doors at once.

    2. This press of the lock button also locks the liftgate on utility vehicles.

  2. Press the LOCK button a second time, within 3 seconds, and the horn will chirp.

Rear Window Release (Utility Models Only)
  1. Press the REAR 2X button twice, within 3 seconds, in order to unlatch the rear window.
  2. On vehicles equipped with a manual transmission, the parking brake must be set in order for the rear window release feature to operate.

Remote Panic Alarm
  1. Press the button with the horn symbol, located on the key transmitter, in order to set the remote panic alarm.

    2. The following steps will occur in order to indicate that the remote panic alarm is ON:

    1.1. The horn will sound for up to 30 seconds.
    1.2. The park lamps will flash for up to 30 seconds.
    1.3. The taillamps will flash for up to 30 seconds.
  2. In order to turn the remote panic alarm OFF, perform any one of the following:
    3. • Press the horn button on the transmitter.
    • Wait 30 seconds.
    • Start the vehicle.