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Thread: question

  1. #11

    Default

    how do u know which tranny u got? only thingi was told was if i had a heavy duty tranny it would be 2 humps on the pan which is what i have. its a 98 yukon

  2. #12

    Default od good for highway

    Well, itīs true, od off kill mpg specially at town. The system "OD" consist in "metaforically" order to on board computer to change the shifts (or gears, i donīt know the difference) quickly to arrive a "D" position as soon as possible. Homever the transmission will do an excesive use a long of life and itīs probably to fault or bad fuction. In resume, for my experience and friends with gm trucks recommend me that i must to use at town the truck with od off.
    OD was builded with the mission to grow up the mpg in usa trucks.

    Well, is my inexperienced opinion. I hope to help somebody.

    From the south of Cancer trophy...

    Viva Chile Mier....
    Chev1997

    pd: 84fiero123 you are working in a mine?

  3. #13

    Default

    I notice my 95 burb hunts for gears in overdrive but I have no drive. 3 would be a different story all together correct?
    Dan
    1999 GMC Sierra 2500 350 vortec
    1967 Jeep M725 ambulance 230 tornado
    1990 Cherokee Limited- 3 inch lift on 33's
    ...and every one of em has issues

    If you have any questions or problems don't hesitate to send me or any other GMTC moderators a PM

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