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Thread: VCM / OS compatibility question

  1. 03-06-2016 #1
    2000_SS
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    VCM / OS compatibility question

    I have a 2003 4.3 Silverado with the stock P59 VCM, service number 12576106, HDW NO. 12570558. The OS is 12579405.


    Ive swapped in an LS1 from a 2000 Camaro with the P01 & OS 9381344.

    Can i take the Camaro file and do a write entire to the '03 VCM, or is it not compatible? I'm assuming that it is not, and i need to do a lot of copy/paste stuff, but i wanted to ask first to be sure.

    Thanks.
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  2. 03-07-2016 #2
    2xLS1
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    Blue/red connector files are not compatible with blue/green connector pcms and vice versa. Compare the file sizes of the two.
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  3. 03-07-2016 #3
    2000_SS
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    That's what I thought, just had to be sure. Thanks.
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  4. 03-11-2016 #4
    2000_SS
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    Truck wouldn't crank hardly at all, acted like a bad battery. Spark plugs were soaked and only 1 looked like it had fired.....tried a lot of unsuccessful remedies and diagnostics. Finally got it to work when I took a 2003 V8 truck file and did a write entire. Apparently taking the V6 file and setting it up for 8-cylinder operation doesn't work. Anybody have any reason why? I wondered how the ignition would work going from a single coil & distributor to 8 coils
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