issues with new body silverado 6.0

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  • Hod913
    Junior Member
    • Mar 2013
    • 2

    issues with new body silverado 6.0

    Got a customer with the 2007 new body silverado getting these codes P0230, P1682, U0101, U0109, U0121 AND U0140. The truck has a really short crank cycle and when it does start it does not always shut off it will stay running with key turned off.
    The customer had a really small battery in the truck so I went there first cause everything points to loss of voltage and loss of communication. That did not change the issues. I'm drawing a blank could it be bad BCM? Or maybe wiring to BCM? I have upgraded the power and ground wires for the truck as well. HELP
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