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Thread: need help asap DBW-DBC conversion

  1. #1
    Join Date
    Aug 2013
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    Clarksville, tn
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    56

    need help asap DBW-DBC conversion

    ok so ive looked and read all over the net and lt1swap, either im not understanding or just totally confused. Im tryin to convert my dbw to dbc. reason is because when i bought motor the dbw was takin off the intake and i didnt get the pedal or tac. the guy i bought it fromfelt bad because someone had jacked my throttle body pedal and tac so he lowered the price to 400 and gave me a dbc TB. so now im tryin to figure out how in the world to convert it. I have the 12200411 pcm red and blue plugs so i know that pcm can be flashed for dbc. I just need to understand how to plug my dbw harness to the dbc TB. something about tps to oil pressure, or 02 sensors and thats where i get confused. pictures, diagrams, anything to help me figure this out would be greatly appreciated.

  2. #2
    Join Date
    May 2007
    Location
    Oak Forest, Illinois
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    Connector C1 is Blue and C2 is Red.
    C1-8 Gray is TPS 5 Volt Reference.
    C1-60 Blk is TPS Low Reference.
    C2-24 Dk.Blu is TPS Signal.

    C2-76 Lt.Grn/Wht is IAC Coil "B" High.
    C2-77 Lt.Grn/Blk is IAC Coil "B" Low.
    C2-78 Lt.Blu/Blk is IAC Coil "A" Low.
    C2-79 Lt.Blu/Wht is IAC Coil "A" High.

    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

  3. #3
    Join Date
    Aug 2007
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    Honeywood, Ontario
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    6,994
    If you're swapping this into an 03+ truck, I'm going to stop you right now.
    2006 Silverado
    Little Black Bitch

  4. #4
    Join Date
    Aug 2013
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    Clarksville, tn
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    The engine is goin in a 94 c1500. Its an 01-02 engine.

  5. #5
    Join Date
    Nov 2007
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    THE MEAN STREETS OF OKLAHOMA
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    11,120
    Then it should have had a dbc to start with
    THEY CALL ME G.

    AZRAEL

    2017 RZR 1000 2 SEATER
    2023 RZR 1000 XP 4
    2008 LTZ DURAMAX 3500
    2023 300S 5.7
    2023 BUICK ENCORE[/B]

    The difference between winning and losing, is having a 2nd stage.

  6. #6
    Join Date
    Aug 2013
    Location
    Clarksville, tn
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    It came out of a Tahoe, it was the higher end one fully loaded it has dbw. I'm really not makin this stuff up lol. I know my pcm works I looked it up on lt1 swap its a 411 computer and I compared computer boards so I know that it will work and need flash I just want to know how to convert it.

  7. #7
    Join Date
    Nov 2007
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    THE MEAN STREETS OF OKLAHOMA
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    Youd be better off changing harnesses.
    THEY CALL ME G.

    AZRAEL

    2017 RZR 1000 2 SEATER
    2023 RZR 1000 XP 4
    2008 LTZ DURAMAX 3500
    2023 300S 5.7
    2023 BUICK ENCORE[/B]

    The difference between winning and losing, is having a 2nd stage.

  8. #8
    Join Date
    Jan 2012
    Location
    DFW, TEXAS
    Posts
    594
    if you already have a dbw harness, find a tac module and pedal. swap with someone who has a dbc harness.
    or find the male-end connectors for throttle position and idle air control; and wire in with the diagram lextech gave ^

  9. #9
    Join Date
    May 2007
    Location
    Oak Forest, Illinois
    Posts
    276
    Quote Originally Posted by dickwiley View Post
    I just want to know how to convert it.
    OK, So was your question answered?

    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

  10. #10
    Join Date
    Aug 2013
    Location
    Clarksville, tn
    Posts
    56
    I only have harness, and I have a dbc TB that was givin to me. So id need dbw TB pedal and tac. Thats more money than I wanna spend just for that when could be used for something else.

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