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Thread: 2004 Silverado cant connect to PCM

  1. July 6th, 2007 #1
    99Silver6.0
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    Default 2004 Silverado cant connect to PCM

    I have a 2004 Silverado, FlashScan V1 and a new VIN lock I just bought. WHen I try to connect... EFI says it cannot locate the vehicle? What is the deal here??

    EDIT: Pardon my premature posting... Cig lighter fuse was popped.
    Last edited by 99Silver6.0; July 6th, 2007 at 03:02 PM.
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  2. July 6th, 2007 #2
    Chevy366
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    Turn the key to the second click just before the start position .
    You can't connect Scan Tool and Flash Tool at same time , in other words if using Scan Tool you have to Stop it first .
    2005 1500 HD , Custom OS3 SD tune .
    2006 Trailblazer
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