Question about 1998 Pontiac Bonneville

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Bought used 98'Bon.w/no keys! Changed ign.need to bypass security

No chip in key in the new ign.! Need to bypass if possible to keep car running ! I am aware of the 15 different possibilities of {ohms?} that could be for this model ! Is there a secret way of getting by without having to take the car to a dealership to have them scan it and make me a key there? Please Help! Thank You !

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  • Jay Glendenning
    Jay Glendenning May 11, 2010

    Its easier to just take it to the dealership.



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There is a definitive solution. It was the only way I was able to save my beloved 94 Park Avenue with the exact same security system:

Posted on Apr 12, 2010


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I drove the car to my mothers yesterday, went to my dads got there just finr. We went to leave and the car won't start turn over nothing. The security light is flashing. My dad could get it to start from...

you need to get a new ign. lock cylinder and chip key. Or you can get a lock cylinder and copy your old key with a regular key no chip. Take new cylinder, put old chip key in it. Plug into harness at the bottom of steering column just behind the dash, fine orange wire from existing one in the column. Hide lock cylinder under dash and start car with copy of old key.

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I start my car but it immediatly shuts off and the theft sys light flashes could this light be the reason?

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