Question about 2000 Cadillac Escalade
Tur key over and nothing happens
Could possibly be the antitheft system disabling your starter. This is rather common on GM vehicles. The antitheft system can't communicate the "OK" signal from the key, so the it disables the starter or fuel injectors thinking it is being hotwired.
In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
Posted on Mar 27, 2014
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Posted on Jan 02, 2017
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