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Q: security system immobilizer system anti theft on 1994 Buick Roadmaster

car will not crank by key something to do with anti theft system what could the promblem is there a sensor and where is it location
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Sometimes the chip located on the key goes bad and or the ignition switch itself fails, same thing happened to my 96 Cad. The dealer had to repair it.
I had this problem. There is a rather large plastic tab in the lower part of the dashboard right by your right leg when you are driving. The dog knocked it out and my mechanic found it on the floor. I'm glad I didn't find it because I probably would have thrown it out. It really looks like nothing that belongs on the car.
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