Testing the Alarm
To test the alarm:
1. Lower the driver window and open the driver door.
2. Press lock on the RKE transmitter.
3. 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 10‑47.
If the alarm does not sound or the headlamps do not flash, see your dealer for service.
See also:
How to Check Lubricant
2500HD with 6.0 L
All Other Series and Engines
To get an accurate reading, the vehicle should be on a level surface.
• For all 4.3 L, 4.8 L and 5.3 L 1500 Series applications, the proper leve ...
Privacy
The complete OnStar Privacy Statement may be found at www.onstar.com. Privacy-sensitive
users of wireless communications are cautioned that the privacy of any information
sent via wireless cellula ...
Universal Remote System Operation
Press and hold the appropriate button for at least half of a second.
The indicator light will come on while the signal is being transmitted. ...