1995 Buick Roadmaster Security (horn) Alarm

1995 BUICK ROADMASTER
134,954 MILES • V8 • 2WD • AUTOMATIC
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EASTSIDEAUTOREPAIR
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My horn alarm sounds (activates) at unexpected times. I have disconnected one side of the stering wheel horn contact, but alarm still activates unespectedly. There may be 2,3 or more days between activations. Sometimes during hot days it will activate (steering wheel air bag "expands" causing contact ??). What can be activating the alarm? Can I disconnect the system where only the horn will be active; how? Thank you.
Mar 2, 2009 at 9:24 AM
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DAVE H
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Hello .. thanks for the donation .. much appreciated

I have checked all the wiring diagrams for all models of Buick Roadmaster made in 1995 .. none of the models have a factory fit alarm connected to the horn .. your alarm must be an aftermarket modification ... you need to have an autoelectrician have a look at the vehicle .. your car IS fitted with a factory(buick) fit immobolizer which disables fuel function if the correct key is not used !!! hope this helps .. let me know

DESCRIPTION & OPERATION
Personal Automotive Security System (PASS-Key II(R)) is designed to prevent vehicle theft by disabling engine unless an ignition key assembly with a specific electrical resistance is used in ignition cylinder assembly. System components include ignition key assembly, ignition cylinder assembly, theft deterrent module assembly, theft deterrent relay assembly, and Powertrain Control Module (PCM).
Mar 3, 2009 at 5:33 AM