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    BULLMASTIFF's Avatar
    BULLMASTIFF Posts: 2, Reputation: 1
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    #1

    Aug 2, 2011, 08:28 AM
    P0440 andp0452 on 02 silverado how can I repair this what voltage should the pcm carr
    Have replced pcm once
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Aug 2, 2011, 10:21 AM
    Quote Originally Posted by BULLMASTIFF View Post
    P0440 ANDP0452 ON 02 SILVERADO HOW CAN I REPAIR THIS WHAT VOLTAGE SHOULD THE PCM CARR

    HAVE REPLCED PCM ONCE
    Guess what... you will be replacing it again too. You won't be repairing the PCM yourself. I'm an electronic engineer and have a lot of test equipment and I couldn't do it at home.

    You do need to check for bad or corroded electrical connections in the truck harness that may have caused the failure.
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