shift issue

Discussion in 'General RVing' started by Dale1948, Dec 18, 2003.

  1. Dale1948

    Dale1948 New Member

    Hello AllisonMan,

    I'm new to this site and tried to see if this had been asked before but could not find anything. I tried to send you an e-mail but do not know if it got thru (not real computer literate).

    I have a new (2004) chevy 2500HD (8.1 w/Allison 1000) that I bought to pull a 32ft. gooseneck. I'm loaded most of the time near the max Chevy allows (20,000lbs). On the maiden voyage I noticed when pulling "grapevine" in CA, that during the down-shifts RPMs would initially increase by about 1000 (from 2000 to 3000) but would then drop 500 of that (back to 2500) after a few seconds. Transmission temp never went above 180 and it did not appear to slip.

    I stopped at an Allison Dealer in Sparks, NV - they said that this was not normal but said they could not do the warranty work on a pickup. I had them change it over to TranSynd and put on a new spin on filter. Did not make any diff. My Chevy dealer said they didn't know what it was. Any thought? I am going to have Allison put the deep pan on. Is it possible to change the shift points? I don't care so much about smooth as I do about the transmission lasting. Thanks in advance. Dale
  2. icrman

    icrman New Member

    shift issue

    You need to go to page one and find the main Allison transmission discussion. That is where he posts.

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