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Thread: check engine w/ lt's

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  1. #1
    Join Date
    Mar 2009
    Location
    Romeoville, IL
    Posts
    90
    what is the code?
    1993 GMC Yukon GT, 6.0 vortec, head work, no cats, cai, HpTuned by me, jasper lvl2 4l65e, nbs brake conversion

  2. #2
    Join Date
    Oct 2009
    Location
    Stephenville,Tx
    Posts
    193
    i havent had a chance to check ill get the y on this afternoon then run up to autozone and see what they say
    2006 Chevy ECSB 5.3 - New L33 Motor,CAI, Descreened MAF, Nelson 93 tune, Transgo Shift Kit, servos, 3in exhaust, Borla, pacetter LT's, and ORY, Aeroforce Furture: stall, cam, 4.10's

  3. #3
    Join Date
    May 2009
    Posts
    149
    Did you plug in the tune before you started the truck? If so then you might need a crank relearn. Or another possibilty is if you didnt pull your plugs out when installing them you might have smacked a plug with the header and cracked it? That happend to me and it drove fine everywhere except light throttle where it would stumble which I had no idea what it was at first because I didnt realize I had a cracked plug. Maybe one of your plug wires isnt on all the way?

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