panic mode

2003 Chevrolet Tahoe

trying to select an after-market alarm and interface module, to retain, as much as possible, the stock operation of things like door locks; I would also like to interface the after-market alarms panic output to the interface module so that the factory panic function is activated and lights and horn happen automatically, with the after-market remote being used

my questions:

• which alarms have a discrete panic output
• does the interface module need a constant on this panic output or can it be pulsed to activate, pulsed again to deactivate (this could allow for going with an aftermarket alarm that does not have a discrete panic output and just use an aux output)

any further information, in helping which parts to get to have it perform as I would like, would be greatly appreciated

David

None but you should be able to pick up on the siren output.

The interface module will not give you horn or lights for panic or even the alarm itself. These you need to get separately at the BCM behind the knee bolster under the steering column. Most aftermarket alarms have a panic feature that activate the horn when holding the arm button for 5 seconds.Mike M2

Tech Manager

CS Dealer Services

You have two options for how you want to do this: 1. Install a remote starter that has a horn output. You'd connect it to the BLACK / YELLOW horn wire in the steering column harness. It easy---you'll already be in the same area of the car to connect all your other ignition wires. However, every remote starter on the market has its own (usually quirky) way of operating the car horn. For example, the Audiovox units I install can beep the horn once with lock, and twice with unlock..........you can turn both things on, or both things off, but that's your choice----all or nothing. You can't have "honk only on second lock" like your factory Tahoe. Also, Audiovox units as default, honk the horn upon remote starting. If I turn this off for my customer, the Audiovox panic feature doesn't work either. So anyway, you get the idea. Hook up your car starter to the horn, and learn to use whatever panic feature the car starter offers. 2. Hunt around and find yourself a GM-DLBP from Trilogix. This is the databus module that'll control your doorlocks and Passlock II bypass. There are many companies making these modules, but only the GM-DLBP has a panic input. So anyway, you take a straight negative output from your remote starter, like, for example, the power-trunk-release output, and connect it to the panic input of the module. Then you would just hit the power-trunk button on your remote starter, and the OEM General Motors panic function would work just as it does now. I forget, but I'm pretty sure that OEM panic doesn't function with the ignition on............that means that if you remotely start your engine, then your panic feature won't work until you shut the engine off again.