Used the key to unlock door and alarm started going off. put key in ignition to start, but wouldn't. removed battery cable, do to neighbors, and the alarm keeps sounding. how can I shut it off? just replaced batteries in remote, haven't tried it yet.

With the drivers window down, and the doors closed. and locked connect the battery and lock and unlock the tailgate with the key, you need to unlock it twice to unlock the doors and turn off the alarm. If the locks are working like thier supposed to the drivers door will be unlocked and opening it won't set off the alarm. the truck should be back to normal. If not disconnect the battery again. Drivers window down. Put the key in the switch and turn the key on to the run position. With all the doors closed connect the battery. connect it good and don't bounce it around. If the battery casbles aren't clean clean them good so it'll connect good. If it still is alarming then the doors switches are likly. Or the door locking motors. You should be able to lock all the doors ( including the hatch) by hand and get the system to reset. Try it all again using a different door to double unlock as a lock switch might be sticking. If the system can't verify that all the doors are closed and locked it won't reset. If you connect the battery wihg the key turned on the system thinks it's already running and appeares to be in the unset mode.