theft detterrent

Use your GM keyless remote to unlock the doors by pressing the "Unlock" button. This button looks like an opened lock. The other option is to unlock the doors with the GM key, and turn the car ignition on. These are the only two options for manually deactivating the alarm, and trying to unlock the doors in any other way will not work. Exit the car and leave the door open. Press the lock switch from inside the car to lock the doors. Be sure all other doors, trunk, hood and lift gate are also closed. If anything else is open, the alarm will not be reset. Close the door and wait for the security light to stop flashing from inside the car. Another option is to close the doors first, and then press the "Lock" button on the keyless remote. This will also pre-arm the theft-deterrent alarm system. If you do not open the doors or press the unlock button on the keyless remote for 10 seconds, the theft-system will go into armed stage.

have 2008 silverado lt tried the 10 min. in on position and 10 second wait period, also the engine starts every time. all I did was change battery. will not reset, any options? alarm stays activated, any options?

My 2011 gmc 2500 duramax diesel anti theft system is on and won't let me start the truck is there anyway I can fix that at home to start the truck

Change the ecm in my 2009 duramax tyres the pass key 3 about 10 time still will not let the theft detector to come off dont now what to do

Just by looking the door the Alarm is set

Just by locking my door the Alarm is set