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clunk shifting from reverse to drive and back

Discussion in 'Chevy Trucks' started by bison1973, Oct 28, 2006.

  1. bison1973

    bison1973 Member
    Messages: 69

    '99 chevy 2500 116,000 mi- has a lound clunk when shifting from reverse to drive and drive to reverse. It is annoying. U joints look fine. What's the problem with it?

  2. jcesar

    jcesar Senior Member
    from Mi
    Messages: 492

    Did you Check to see if there is any play in the ujoints? I have had them be almost new, but still have play.
  3. bison1973

    bison1973 Member
    Messages: 69

    well, just by getting under the truck and using my hands to see if there is play I don't find any.

  4. jcesar

    jcesar Senior Member
    from Mi
    Messages: 492

    Not to sound redundant, but maybe there is play in the rear yolk?
  5. bison1973

    bison1973 Member
    Messages: 69

    I'm getting it checked by a mechanic later this week. Any info from anyone I can get before then will be helpful.

  6. dlcs

    dlcs 2000 Club Member
    Messages: 2,160

    My '99 Chevy Silverado 2500 has made that noise for at least 2 years. I have had a Chevy mechanic and independant mechanics tell me that its not uncommon. They said its most likely back lash in the rear end. Mine only does it going from drive to reverse or reverse to drive. i can lessen the clunking noise by putting the truck into neatral for a couple of seconds, before changing to reverse or drive. The Chevy mechanic said that it always sounds worse on a extended long bed truck cause of the length of drive shaft. Basically the longer the driveshaft the louder it sounds, kinda of like a big tuning fork. I thouhgt thatmaybe the idle was too high and that it was slamming in gear but I was told that isn't causing it. Since mine started making this noise, I hear about this problem alot with the Silverados. Do a search and see the thread I started on it.
  7. DBL

    DBL PlowSite.com Addict
    Messages: 1,310

    our 91 dodge does the same thing i hope this isnt serious
  8. jcesar

    jcesar Senior Member
    from Mi
    Messages: 492

    If you figure out what it is, please let us know.
    Hope it isnt serious. Good Luck
  9. lawnmedic

    lawnmedic Senior Member
    Messages: 703

    If your truck has a carrier bearing make sure it is getting lubed. Had same problem cured by greasing carrier bearing assembly.
  10. scaper27

    scaper27 Member
    Messages: 48

    It is the rear housing. It is expanded and there is play in the housing. It will do it for years and thousands of miles. Don't worry about it. I have it in both 99's and I know have 86,000 on one and 100,000 on the other, No problems. You have to replace the whole rear housing to get rid of it. Good luck. I deal with mine
  11. imdawrlus

    imdawrlus Member
    Messages: 71

    try greasing the slip yoke where the driveshaft connects to the tranny.

    sometimes they stick and clunk when they free themselves.
  12. Mark13

    Mark13 PlowSite Fanatic
    Messages: 5,796

    my 98 k1500 does it to, so its a fairly common problem i guess but it doesnt seem like its worth worrying to much about
  13. Proscapez LLC

    Proscapez LLC Senior Member
    Messages: 293

    I just took mine in about that same problem on my 04. He told me the rear Yokes are the problem and there is a TSB on it they fixed it in a few hours and even replace my rear end fluid.

    It sounds like a brand new truck again now......
  14. rcpd34

    rcpd34 Senior Member
    from MD
    Messages: 688

    I had a similar clunk and even though the U joints looked fine, I replaced them all at the same time and it went away. It will eventually fail if you let it go long enough. Probably at the worst time.
  15. JeffNY

    JeffNY Senior Member
    Messages: 484

    My '94 1/2 ton was doing this for about 4 months....U-joints were new. After the 4mo, the tranny self distructed. Now its a lawn ornimate for a while.
  16. Brian Young

    Brian Young PlowSite Veteran
    Messages: 3,394

    You have to take pressure off of the drive line in order to check play in u-joints. Jack it up then see if there is any play.
  17. Rcgm

    Rcgm Senior Member
    Messages: 613

    I had same problem it was a lound clunk in my 04 silverado I replaced u joints it was fine after that.I didn't thin u joints were bad but dealer said they were.

  18. RYDER

    RYDER Senior Member
    Messages: 281

    It is most likely the U-Joints. If you jack up the rear-end than get under the truck and rotate the drive shaft back and forth you should be able to tell witch one it is, But the truck wheels need to be off the ground!!!!!!!!wesport
  19. bison1973

    bison1973 Member
    Messages: 69

    '99 Chevy shift clunck

    I'm the one who originally started this disscusion. I had the truck looked at and the mechanic said the u joints are fine. Sure dosen't sound fine though. He said this is something that happens on GM trucks and there's not much one can do about it. I mean it's a MAJOR clunk on my truck. Although it dosen't do it nearly as badly in 4WD. Anyone out there have this problem and have it fixed? What was done and what did it cost?
  20. rcpd34

    rcpd34 Senior Member
    from MD
    Messages: 688

    Find another mechanic. That's the wrong answer. U joints fixed mine.