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  1. 1

    Tempermental Allison

    Thanks Mike, 03dmax, and Colt. It's been so cold that I hv'nt dropped a little oil out of trans, it's a strong 1'' above max hot line when trans is barely warm and if that don't do it I'll drop filters and oil, hopefully I will not need to get it reflashed. Thanks again !:thumb::)
  2. 1

    Tempermental Allison

    Previous owner said he had it flushed 2 yrs ago, I didn't get particulars on it and I feel he is honest. I would think they would have dropped pan and changed internal filter but then I have read that Allison doesn't recomend it till overhaul. They say just change the external spin-on. Think I...
  3. 1

    Tempermental Allison

    Thanks guys for the input :thumb: On another diesel forum I had guy say his truck started out doing this, then more often, then started throwing a code, and finally rebuilt trans because of a clutch pack slipping. I'm pretty sure my trans is fine mechanically, my blip is to crisp to be coming...
  4. 1

    Tempermental Allison

    No, this truck has never had a programmer on it according to the previous owner of 7 years when he purchased it at 15,000 miles. I haven't had it scanned yet but what you say makes sense, maybe a glitch in programming.
  5. 1

    Tempermental Allison

    1stDiesel here again. One more thing in trying to pinpoint the issue. Like I say, when it shifts into 3rd, it shifts firm and snug but at the completion of the shift there is a very short rev-up and instantly rpm settles back down. I refer to it like you could blip the throttle while making the...
  6. 1

    Tempermental Allison

    Bought 2002 HD 2500 Duramax, there are no codes listed for trans, what happens occasionally is when it shifts to 2nd or 3rd when driving normal, there is a very short rev-up of engine rpm when making the shift. You can hear and feel a definate blip in the throttle when it shifts. It works...
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