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Prolock security system

How do you disable the prolock security system on a 1997 Buick Lesabre? he car has both the PASS key and the prolock system, twice before it would not start for my daughter, but started right up when I tried, now the car does not turn over with both the chip and key in place. I believe the prolem is the prolock security sysrem and want to deactivate it.


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