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Thread: Best factory ECU?

  1. #1
    Join Date
    Jun 2009
    Location
    Cocoa, FL
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    Best factory ECU?

    Im going to go get a "new" ecu from LKQ today, and there are several choices. Are any better than any others? I am running a 2002 5.3/4L60E out of a silverado.

    2002 Suburban
    2002 Tahoe
    2002 Silverado
    2002 Yukon XL1500
    2002 Escalade
    2000 Silverado 2500

    Do any of these have benefits over the others?

  2. #2
    Join Date
    Nov 2006
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    Mesquite, TX
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    Nope they should all be the same...the 2500hd wont work though cause it's prob a 80e trans file
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  3. #3
    Join Date
    May 2007
    Location
    Oak Forest, Illinois
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    276
    You need PCM number 12200411. It doesn't matter what it is out of. You will have to have it tuned anyway.

    Jeff
    98 GMC RCSB 2wd, 100% internally stock 305, w/twin T-3 junkyard turbos,Ramjet intake w/42lb inj,12200411 PCM. 4675lbs w/me in it. Best time in 5 passes 13.01@110

  4. #4
    In the trail blazer ss pcm is ready for boost. That could be a plus.

  5. #5
    Join Date
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    Quote Originally Posted by 6.0vortecchevy View Post
    In the trail blazer ss pcm is ready for boost. That could be a plus.
    wont fit his harness...
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  6. #6
    Join Date
    Aug 2008
    Location
    North Texas
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    +1 completely different.

  7. #7
    Join Date
    Nov 2003
    Location
    Denton Texas
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    You really should have your factory program loaded into the PCM by a TechII or something similar. Just writing over what is in there with HPTuner software won't be the same as a new load. It won't matter if it had a 80e in it that way, just get the 411 PCM and you'll be good to go.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  8. #8
    How do you know if the pcm are able to fit or not.

  9. #9
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
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    there will be a label on the PCM and the part number on the PCM will end with 411. It will also have labels on the connectors that say red on one side and blue on the other. It embossed into the connector on the PCM if I remember correctly.
    Last edited by RedHeartbeat; 10-24-2009 at 12:26 AM.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  10. #10
    Join Date
    Jun 2009
    Location
    Cocoa, FL
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    not embossed, just stamped, but yeah, red and blue.

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