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Thread: 03 sierra 4.3 to 5.3 swap(i need help)

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  1. #1
    Ok well it didn't work. As soon as I turn the key to the Acc position the starter engages, and won't stop til I turn the key off. No spark, no fuel. What the hell? help please!!!!
    Last edited by sonnychills; 09-22-2011 at 08:02 AM.

  2. #2
    Join Date
    Nov 2007
    Location
    THE MEAN STREETS OF OKLAHOMA
    Posts
    11,120
    Might wanna edit that post no cursing allowed man, anyways we had the same problem on a buddies truck with the truck starting in acc pos. Ill ask him what we did to fix it cus i dont remember.
    THEY CALL ME G.

    AZRAEL

    2017 RZR 1000 2 SEATER
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    The difference between winning and losing, is having a 2nd stage.

  3. #3
    Is the block from the harness that goes into the fuse box different From 99-02 and 03+? it doesn't make since that I'm not even getting spark or fuel!!

  4. #4
    Join Date
    Aug 2007
    Location
    Honeywood, Ontario
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    6,994
    You have to use an 03+ harness, because yes, there is differences.
    2006 Silverado
    Little Black Bitch

  5. #5
    I repined the plug as pictured at the beginning of this thread to match each other. I also had to put a neutral safety switch plug on the harness since it had been cut off. So basically I have to get an 03+ harness and dbw stuff as well?

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