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Thread: the swap begins

  1. #61
    Join Date
    Nov 2007
    Location
    phoenix az
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    247
    the sending unit on the 98 comes off at least the one i have does lol. if not use a big hammer lol
    1998 chevy 1500 with 6.0/4l80e comp cam, tune, exhaust,

  2. #62
    Join Date
    May 2004
    Posts
    2,120
    I think you're right beater6.0, a lower resistor might work.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  3. #63
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    If you add any resistors inline to the 98 sender its just going to make the situation worse. Replacing the resistor is your only option if you don't have the original PCM handy.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #64
    Join Date
    Mar 2003
    Location
    San Marcos Texas
    Posts
    4,393
    Try grafting on an old sending unit to the new unit. You would have to add the resistor across the sending unit, not inline to lower the resistance.
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  5. #65
    Join Date
    May 2004
    Posts
    2,120
    Greg, I meant to change the signal from the PCM using a variable resistor of some sort. My neighbor did his and he said it works but I'll need to get the information from him to see exactly what he did. The only resistor I know of is the variable on the unit itself because there's nothing else except for the pcm in between. I know changing the sending unit would be the best option but if we can find out what the PCM conversion signal is we might be able to add something up by the cluster to mock the pcm. I won't give up on this one just yet.
    Last edited by NITROUS; 07-26-2008 at 05:53 PM.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  6. #66
    Join Date
    Jun 2007
    Location
    maine
    Posts
    1,458
    Quote Originally Posted by NITROUS View Post
    Greg, I meant to change the signal from the PCM using a variable resistor of some sort. My neighbor did his and he said it works but I'll need to get the information from him to see exactly what he did. The only resistor I know of is the variable on the unit itself because there's nothing else except for the pcm in between. I know changing the sending unit would be the best option but if we can find the out what the PCM conversion signal is we might be able to add something up by the cluster to mock the pcm. I won't give up on this one just yet.

    lol please dont! i dont have a fuel pump at the moment. for a 96-97 lol and dont really feel like buying one haha. keep me posted with what you find. its the only thing not really working yet... speedo and tach work so thats good.
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

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