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  1. #11
    Super Member tcreeley's Avatar
    Join Date
    Feb 2011
    Posts
    6,526
    Location
    New England Yankee living in Central Maine
    Tractor
    NH TC30

    Default Re: GM 6 speed auto- Clunky?

    My 2003 2500HD auto 6 liter has never clunked 2wd, towing or not. I'll get that when I go into 4wd and out sometimes at a stop.. Must be something new.
    2003 NH TC30, 5' International Agritech Bushog, Hiller/Bedder, + miscellaneous and sundry items of use.

  2. #12
    Platinum Member
    Join Date
    Apr 2012
    Posts
    743
    Location
    pa
    Tractor
    kubota 7040sud

    Default Re: GM 6 speed auto- Clunky?

    i have a 2011 3500hd mine doesnt clunk at all a bad u joint on the rear driveshaft maybe it doesnt happen when going in to 4wd i hear a clicking that it i have a floor mounted shifter

  3. #13
    Veteran Member deerefan's Avatar
    Join Date
    Aug 2005
    Posts
    1,571
    Location
    louisiana
    Tractor
    1952 8N, 2005 JD 5103

    Default

    Quote Originally Posted by case245
    i have a 2011 3500hd mine doesnt clunk at all a bad u joint on the rear driveshaft maybe it doesnt happen when going in to 4wd i hear a clicking that it i have a floor mounted shifter
    You have the allison correct? Mine is a 1/2 ton.

  4. #14
    Super Star Member Diamondpilot's Avatar
    Join Date
    Jan 2007
    Posts
    14,533
    Location
    Daleville, IN
    Tractor
    Jinma 254/284 Ford 861 Powermaster at work

    Default

    I would check your U Joints and Carrier Bearings if equipped. I have done quite a few in GM trucks as of late. Don't bother letting the dealership fix it under warranty. They just put in the same crap part and you will be doing it again in 25,000 miles. I know of a truck that is on its 4th in 80,000 miles. This last one I did with a aftermarket Moog.

    One other though is the transfer case. They have a pump rub issue. Could the noise be coming from it?

    Chris
    Last edited by Diamondpilot; 02-20-2013 at 10:10 PM.

  5. #15
    Veteran Member deerefan's Avatar
    Join Date
    Aug 2005
    Posts
    1,571
    Location
    louisiana
    Tractor
    1952 8N, 2005 JD 5103

    Default

    Quote Originally Posted by Diamondpilot
    I would check your U Joints and Carrier Bearings if equipped. I have done quite a few in GM trucks as of late. Don't bother letting the dealership fix it under warranty. They just put in the same crap part and you will be doing it again in 25,000 miles. I know of a truck that is on its 4th in 80,000 miles. This last one I did with a aftermarket Moog.

    One other though is the transfer case. They have a pump rub issue. Could the noise be coming from it?

    Chris
    Not real sure. It is not a ujoint, had those checked by local mechanic. It is coming from the trans, not all the time, almost like I catch it between gears. Done it since new with 7 miles on it.

  6. #16
    Gold Member Bigkrank's Avatar
    Join Date
    Jan 2009
    Posts
    281
    Location
    NW Ohio

    Default Re: GM 6 speed auto- Clunky?

    Pump rub issue only on older than 2007.5.
    Several garden tractor pullers
    Kubota B2630
    Kubota ZD28
    Ford 655D backhoe
    Bobcat T190, various attachments
    Numerous Farmalls

  7. #17
    Platinum Member Ryan03's Avatar
    Join Date
    Feb 2006
    Posts
    650
    Location
    Chardon Ohio
    Tractor
    Farmtrac DTC270, Kubota G5200hydro, Honda recon 250, Suzuki King Quad 450 4x4, 2003 2500 DMax/Allison 4x4

    Default Re: GM 6 speed auto- Clunky?

    Quote Originally Posted by Diamondpilot View Post
    I would check your U Joints and Carrier Bearings if equipped. I have done quite a few in GM trucks as of late. Don't bother letting the dealership fix it under warranty. They just put in the same crap part and you will be doing it again in 25,000 miles. I know of a truck that is on its 4th in 80,000 miles. This last one I did with a aftermarket Moog.

    One other though is the transfer case. They have a pump rub issue. Could the noise be coming from it?

    Chris
    I beleive the pump rub is a 2007 and earlier issue.

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