Recent content by Blue93cube

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    4L80E 1993 6.2 no 1-2 shift

    Following up on early versus updated connector. Anyone know?
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    4L80E 1993 6.2 no 1-2 shift

    I haven’t tried the jumper since I replaced tcm, I thought ESS failure would throw SES? I really hope that’s not it given the prices of that piece..
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    4L80E 1993 6.2 no 1-2 shift

    Do they still service the 1993 plug? All of the case side kits I saw have a different pin setup that what’s on the truck currently and notes kept coming up about an updated plug. I don’t mind splicing in new truck side wiring if I have to.
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    4L80E 1993 6.2 no 1-2 shift

    Well, possible issue found when unplugging connector, it was full of trans fluid. That being said, unplugging had second gear only and no slipping. Tried cleaning and drying out both sides of connector, no change in behavior.
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    4L80E 1993 6.2 no 1-2 shift

    10-4, thank you!
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    4L80E 1993 6.2 no 1-2 shift

    After the TPS swap and adjustment and before the TCM swap, the truck only had second gear and CEL.
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    4L80E 1993 6.2 no 1-2 shift

    Almost every lap, it refused to upshift, I would say that if I jumped in it right now ended a lap around the block that would be the behavior. Every once in a while it would upshift the rpm would drop and the van would still accelerate, but then it would rev up, and if I slowed down a little...
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    4L80E 1993 6.2 no 1-2 shift

    By never getting that far, I mean I end up getting the RPMs so high up in first because it won’t even try to upshift most of the time that I just back out.
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    4L80E 1993 6.2 no 1-2 shift

    It never gets that far (3rd / 4th). Is there any test in limp mode to check owc? Would the owc failure still have engine braking in manual low?
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    4L80E 1993 6.2 no 1-2 shift

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    4L80E 1993 6.2 no 1-2 shift

    One thing that concerned me was the solenoids looked different from the replacements but I read that they have been updated over time.
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    4L80E 1993 6.2 no 1-2 shift

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    4L80E 1993 6.2 no 1-2 shift

    This is all under light throttle as the 6.2 gets to uncomfortable sounding rpms quickly in first. Shifts into 2nd with no flare or hesitation, holds for a second, just long enough to think it might be ok, then feels like a downshift (revs go up quickly) but no engine braking when I let off the...
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    4L80E 1993 6.2 no 1-2 shift

    Will a snap-on brick work or what other options are there aside from Tech2 for a 1993 diesel? Diy options seem to favor the 6.5td.
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    4L80E 1993 6.2 no 1-2 shift

    New to the forum but have been reading a ton. 1993 G30 van, ex air force, 6.2/4L80E. Problems started with dead TCU, limp mode, CEL, was run this way for a while (off road only maintenance support vehicle). Replaced TCU, swapped chips. Now have 1st, no CEL, but no upshift. Not in od, d, or...
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