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  1. #1

    Default Transmission Swap

    Will a New Process transmission and transfer case from a 97' fit directly, and work, in a 99' Suburban, without any problems or mods?

  2. #2


    Is it a new process transmission? Also, what model NP transfer case is it? Common GM transmission that went in the Suburban were 4L60E for 1/2 ton trucks and 4L80E for 3/4 and 1 ton trucks. I'm not sure what transfer case was used in 99, I think it was either an NP241 or an NV transfer case for the half ton trucks.

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half

    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  3. #3


    It is an NP246GM 272 Ratio. the build date stamp looks to be March/April 98'

  4. #4


    I don't think the '97 transfer case will be direct replacement, as I believe the NV246 was first introduced for the '98 model year. If you do it, I would try to get all of the transfer case stuff (switches, control module, lever [if applicable], and so on).

    I believe, since the '99 suburban was still the old body style (OBS), the transmission should swap ok (assuming you are swapping from 1500 to 1500 or 2500 to 2500). Are the donor and recipient both half ton? or both 3/4 ton?
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  5. #5


    Good to hear. I will try and talk the guy into seperating the trans and the transfer. yes K1500 to K1500

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