Need Help! Auction Car, No Key, Now No Start! - Chevy Impala Forums
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post #1 of (permalink) Old 10-02-2017 Thread Starter
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Need Help! Auction Car, No Key, Now No Start!

Hello everyone, new to this forum. Thanks for the wealth of information on here. Please forgive me if I'm bringing up a common issue...

I purchased a 2002 Impala (I believe it is a base). It is a 3.4L. I purchased it at auction with "no key". I was able to go to the Chevy dealer with proof of purchase and have a key made up. The dealer said it did not have a chip, but when i tried to start the vehicle, the key did not operate the ignition lock. It was either the wrong key, or the ignition lock was jammed up. The car was impounded in 2012. I changed the lock cylinder with a used junk-yard lock cylinder from a different GM vehicle that matches up exact. It was basically plug-n-play. Both lock cylinders had the PASS 3-wire harness, which I cut and spliced from the new one to the current vehicle. I did all of this with the vehicle off and the battery dead.

The current situation: The vehicle turns on, the key works in the new (used) lock cylinder, but the car does not start. The message center displays the image "SECURITY" and a few other messages like low battery, low engine oil, no seatbelt, etc. When I try to start the vehicle, all of the lights shut off on the dash, and when I release the key, they all come back on. I do not hear any noises on the outside of the vehicle, like the starter engaging, etc. To insure that it wasn't a charging issue, I tried using two jump boxes.

What I've tried so far: I tried the 10-minute time-out process. I waited at least ten-twelve minutes, shut the vehicle off, waited five seconds, turned the vehicle back on and attempted to start. Same problem. The old lock cylinder is no longer available and did not operate.

Any info is appreciated. Thank you for your time!
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post #2 of (permalink) Old 10-05-2017
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I believe you have to program to the BCM? So you replace the lock cylinder that has the chip in it right? it's the part the actual tumblers for the key slide into. Then you follow the BCM reprogram procedure (look it up). Then it should start. Look at my thread on here, if you have bad BCM it will go nuts and not accept the reprogramming
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