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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