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International Automotive Technicians Network
Re: Buick No Start, security light
Posted to Technical Discussion Forum on 10/8/2016

I would suspect a short to power or ground in the wiring or passlock module. Get a wiring diagram & locate the module & see what makes the light come on. It may be as simple as cutting a wire.

The module may also control the starter relay(which is buried in ... Login to read more.