Vehicle make/model = 2001 pontiac grand prix se Mileage = 101250 Engine size = 3.1 dash lights = security light codes = EGR Valve work done prior = none work done to repair = none tech = JK question = My 2001 pontiac grand prix will start and die after 3 seconds. Some one told me to have the battery checked and it was bad. Ran good for 3 days and started up again. I noticed after all this started my security light is flashing on my dash. Any tips or suggestions I am lost.
JK: The most common cause for this problem is the "passlock ignition cylinder". This ignition cylinder has the sensor for the security system in it, and it sends the signal to the body control module(BCM) . The bcm should be scanned for codes to be sure. There may a codes B2960, or B2958. This is a telltale sign of the cylinder being bad. Once the cylinder is replaced, it will have to be programmed. That cylinder is approx $175 at the dealer. Leaving the key on until the light quits blinking or goes out is esentially re-learning the theft system, then it will usually start. Eventually this will not work, and the car will not start even after waiting. Expect to pay approx. 2 hrs. labor for replacement, whether it be the dealer, or any repair facility
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