Question about 2002 Chevrolet Cavalier Coupe

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Pcm I put a new pcm in a 2002 chev cavalier. The car will not start with that pcm in it. When the stock pcm is put back in it the car starts up. How do I get the car to start after I install the new pcm Lee

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Dealer only ,factory immobiliser

Posted on Jun 22, 2009

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I installed a new pcm into my 2002 chevy cavalier and it will not start. What is wrong?


When you purchased the new PCM did you or was it "flashed" to your VIN (vehicle identification number) If it was used or the new one was not flashed to your VIN it will not work for your vehicle until it is. I hope this helps and good luck.

Aug 01, 2011 | Chevrolet Cavalier Cars & Trucks

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Service light, headlights blink 5 times on start


sounds like there is a problem with the day time running lights my does the same thing but because i installed HID light so i no long have day time lights try changing headlight bulbs if not then its a short

Jul 17, 2009 | 2002 Chevrolet Cavalier Coupe

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I think it's under the dash- driver's side, behind the fuse panel

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1989 Z24, 2.8v6 intermittent stalling while driving. Sometimes will restart, but not go far, sometimes will not restart at all. Usually starts fine the next day, may run OK several days before acting up...


the pcm may have a cracked board, i had an 88 cavalier z24 with the same problem, replced the ecu and it ran fine, the problem is that the boards inside the pcm crack and lose connection, the next time it acts up open the glove box and try tapping on the pcm, if the car responds at all, the pcm is bad

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1 Answer

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Check the crankshaft position sensor. If the plug is loose or the sensor itself is bad it will cause similar problems

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