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Thread: Engine light again...third time

  1. #11
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    Well i just disable the P0751 and P0757 and its still happening. I cant even drive like this everytime reflashing and turning off the codes.

    We had remove the 4wd kit, installed 4.10 ring pinion on the rear and upgrade the trans w/ yank converter
    2002 4.2L I6 Trailblazer LTZ

  2. #12
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    Post up your current tune now and Ill take a look at it tomorrow if I have a sec or saturday when Im done with finals.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  3. #13
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    Quote Originally Posted by goldbergv95 View Post
    I just got my truck back and on sunday the engine light came on talking about Shift Selonid B Stuck on "On". I removed the engine light and it didnt show up until this morning again.

    Now i had this light pop out right before i had my trans tc, and gear ratio (3.73 to 4.10) swapped so im thinking its something w/ the tune. My friend thinks it something with the gear ratio. I checked my tune and it looked fine for 4.10. Does anybody know what else could be the problem?

    Here are the files.
    Attachment 5292
    Attachment 5293

    Heres whats on the trans right now
    Wait4Me Tune Original OS Part 6 4.11 No TCC - Copy.tun

    and here is the orinial tune from wait4me
    Wait4Me Tune Original OS.tun
    2002 4.2L I6 Trailblazer LTZ

  4. #14
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    Ive read one of your old post from 07 and I think I have a similar situation you use to have Erik, with the P0757.
    2002 4.2L I6 Trailblazer LTZ

  5. #15
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    Does it have to do with my high stall yank 3600? If so what do i have to change to fix the problem?
    2002 4.2L I6 Trailblazer LTZ

  6. #16
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    I never got P0757...I had P0442 that wouldnt turn off for the longest time but has since magically disappeared (so I dont have it turned off anymore).

    Its not a TCC issue it seems like, sounds to me like one of the solenoids inside the trans is shot and might require a shop to replace it. If you were having lockup issues with your TCC then Id say its related. BTW Ill makes some little lockup changes you might like tomorrow or this weekend. Im using forums as an excuse for a study break...
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  7. #17
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    Quote Originally Posted by ScarabEpic22 View Post
    I never got P0757...I had P0442 that wouldnt turn off for the longest time but has since magically disappeared (so I dont have it turned off anymore).

    Its not a TCC issue it seems like, sounds to me like one of the solenoids inside the trans is shot and might require a shop to replace it. If you were having lockup issues with your TCC then Id say its related. BTW Ill makes some little lockup changes you might like tomorrow or this weekend. Im using forums as an excuse for a study break...
    lol i have my last 2 exams on the following monday so i know how you feel.

    But like i said this happened before i swapped in an upgrade trans. so this problem apprearing at both times with with my old and upgrade trans something is wrong with the tune. replacing the selenoid is a waste of money. Like most people when they install a higher stall found sythoms similar to mine, also get a slipage around 40-50 mph which started after i got the yank tc installed.

    ive read something about oem tc wanted to lock and aftermarket tc not wanted to lock which may be the cause for the slippage or the selenoid malfuction. I heard that on the Tc selenoid min i might have to keep it 90% and at TC selenoid Max at 100% but i dont know
    2002 4.2L I6 Trailblazer LTZ

  8. #18
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    Quote Originally Posted by ScarabEpic22 View Post
    Honestly I think a bunch of the DTC disable flags dont work in the P10, or at least we're missing another table because Ive turned a few off before and they eventually come back...
    i second that.....

  9. #19
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    Now its getting worst. Just this afternoon when the P0757 light lighted up i started to hear im rear differential making loud noises.

    I just looked at the error codes and I see 3 p0757 (2 red and one yellow engine icons). Can anyone help me??
    2002 4.2L I6 Trailblazer LTZ

  10. #20
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    2002 4.2L I6 Trailblazer LTZ

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