Testing the Alarm

To test the alarm:

1. From inside the vehicle, lower the driver side window, and open the driver door.

2. Press 3. Get out of the vehicle, close the door, and wait for the security light to go out..

3. Get out of the vehicle, close the door, and wait for the security light to go out.

4. Reach in through the window, unlock the door with the manual door lock, and open the door.

This should set off the alarm.

If the alarm does not sound when it should, but the headlamps flash, check to see if the horn works.

The horn fuse may be blown.

To replace the fuse, see Fuses and Circuit Breakers on page 10‑31.

If the alarm does not sound or the headlamps do not flash, see your dealer for service.

    See also:

    Exterior Lighting
    The exterior lamps control is located on the instrument panel to the left of the steering wheel. : Turns off the automatic headlamps and Daytime Running Lamps (DRL). Turn the headlamp control ...

    Remote Keyless Entry (RKE) System
    The RKE transmitter is used to remotely lock and unlock the doors from up to 60 m (195 ft) away from the vehicle. Press to unlock the driver door. Press again within five seconds to unlock a ...

    Engine Compartment Fuse Block
    If the vehicle has a diesel engine, see the Duramax Diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. The Engine Compartment Fuse Bl ...