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Thread: v6 to v8 need help please

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  1. #1
    Join Date
    Jan 2008
    Posts
    8

    has any one tried this

    MOMENTARY & PERMANENT IMMOBILIZER BYPASS SOLUTIONS FROM:
    I'm questioning this because I just swapped engines I have a 1997 Step Side 4.3 changed it to 5.7 out of a 1999 Tahoe. I'm having the same issue, it cracks up and shuts right down. A guy I that I work with use to work for a auto alarm installation company sent this link to me.

  2. #2
    Join Date
    Jan 2008
    Location
    Texas
    Posts
    49
    Quote Originally Posted by dogparish View Post
    MOMENTARY & PERMANENT IMMOBILIZER BYPASS SOLUTIONS FROM:
    I'm questioning this because I just swapped engines I have a 1997 Step Side 4.3 changed it to 5.7 out of a 1999 Tahoe. I'm having the same issue, it cracks up and shuts right down. A guy I that I work with use to work for a auto alarm installation company sent this link to me.
    that would only work if you tested the vehicle that to new pcm came from. Otherwise you're still just putting in the sae resistance that the key would, which is for the old pcm
    none

  3. #3
    Join Date
    Jan 2008
    Posts
    8

    During Swap

    When I took the engine & transmission from the Tahoe I pull & plugged the entire wiring harness & computer from under the hood. Dropped it into the 1997 P/U! Should pulling the steering column from the Tahoe and intall into the P/U help any? I still have the Tahoe! Is there anything that I can pull would help?

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    You're going to want a tune in the future, anyhow, so just break out the credit card and order the NelsonPerformance tune and have him disable VATS.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Jan 2008
    Posts
    8

    Disable VATS?

    Quote Originally Posted by RedHeartbeat View Post
    "order the NelsonPerformance tune and have him disable VATS."
    If I have the VATS System disabled with that solve the issue?

  6. #6
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,067
    yes
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

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