Security system identification

56073

56074Can somebody help me figure out what this security device is? Who made it, was it stock? I only have one of the keys and want to get a new one but I can find any markings on it to begin looking. It is installed in a 2004 chevy blazer 2WD.

It is probably just some kind of immobilizer, its definitely not stock. You'll probably not have much luck finding additional keys for it.

Yeah, the manual talks about PassLock. Basically just a lock cylinder security feature. The radio is sto k and it has a red light that blinks to indicate the alarm is armed. I just dont want to be in a situation where it stops working or I lose the only key.