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  1. #1

    Default need help asap! 2000 Silverado rear end clunking

    was picking up a friend from his house and all of a sudden leaving the last stop light before getting back to my apartment, i hear a horrible clunking sound from somewhere around my driveshaft.
    heres a video i shot real quick, let me know if you can help me diagnose it please, i dont think i should be driving my truck in this condition....





    i have had that notorious clunking sound in the rear end for a while now when you depart a stop light, but this continuous clunking literally popped out of nowhere, it happens in drive and reverse.
    2000 Chevrolet Silverado

    Powertrain:
    4.3L V6, 4L60E, 2WD, Single Cab
    Performance:
    Airaid CAI
    Poweraid TB Spacer
    Flowmaster 10-series exhaust (dumped)
    BLACKBEAR TUNED!!!
    Edge CS insight monitor
    4.10 gears
    Limited-slip differential
    LS-1 Dual Electric fans
    Corvette tranny servo swap

    Audio:
    Head Unit: Alpine
    Speakers: Alpine SPR-60C 6.5" component set, 4X6 Infinity Kappas
    Subs: 2-12" Kicker CVT's
    Amps: Alpine-M1000 (subs), Alpine MRX-F65 (Speakers)


    Tires/Wheels:
    305/70R16 NITTO Terra Grapplers
    16" PROCOMP 7089's
    Suspension:
    2" leveling kit
    3" Fabtech Spindle Lift Kit
    Front/Rear-Bilstein 5100 shocks

    Lighting:
    FRONT
    35W HID Low Beams
    RECON LED smoked roof cab lights
    REAR
    HELLA LED taillights and 3rd brakelight
    HELLA FF-75 Aux. Reverse Lamps
    RIGID dually D2, flush mount, wide beam
    Accessories:
    Hawk HPS Brake pads
    Russell braided steel brake lines
    Powerstop-red powdercoated brake calipers
    Powerslot Cryo brake rotors
    EGR in-channel window visors

  2. #2

    Default

    not sure dude. u joints or the rear end maybe....

    ring gear?

    im not a good person for this kind of stuff..

    Alex


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

  3. #3

    Default

    It sounds like the rear end to me. Can you put your hand on it and "feel the sound"? That is the only way I can describe it. Can you feel the clunking in the rearend? You can try putting a long prybar in between the yokes and see it you get any movement in the u-joints. I have also seen the bushing in the back of the trans (where the slip yoke slides in) go bad. When I have seen those bad they only clunk on stop and accel.

    - - - Updated - - -

    So, I listened to it multiple times. It could be a ujoint. It is really hard to tell in a video. Why don't you park it on level ground, block the tires and pull off the drive shaft. It will take you 5 minutes. That way you can manipulate the joints by hand and see if they feel crunchy. If it is a u joint it should be pretty obvious.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  4. #4

    Default

    Quote Originally Posted by Pikey View Post
    It sounds like the rear end to me. Can you put your hand on it and "feel the sound"? That is the only way I can describe it. Can you feel the clunking in the rearend? You can try putting a long prybar in between the yokes and see it you get any movement in the u-joints. I have also seen the bushing in the back of the trans (where the slip yoke slides in) go bad. When I have seen those bad they only clunk on stop and accel.

    - - - Updated - - -

    So, I listened to it multiple times. It could be a ujoint. It is really hard to tell in a video. Why don't you park it on level ground, block the tires and pull off the drive shaft. It will take you 5 minutes. That way you can manipulate the joints by hand and see if they feel crunchy. If it is a u joint it should be pretty obvious.
    its not the U-joints, i just pulled the driveshaft, and they are good...

    its inside that hole where the slipyoke slides in...

    heres a video



    i tried to have a steady hand, but you really cant see anything with it anyway, with my ears i can hear the clunking in there, and if you have good eyes, you can see that shaft in there not rolling PERFECT, though i do not know if a brand new one should roll perfect or have SOME play or not. but with my hand on the tranny, i feel the clunking.....

    :(

    sounds expensive.......

  5. #5

    Default

    *bump*
    to anyone who might have an idea, and also if it indeed does end up being a complete rebuild, does anyone have any suggestions for upgrades or anything to add while its being rebuilt, ive heard talk of servos and such, anything that might make it better and prolong the life of my transmission.
    thanks
    gotta wait till tomorrow morning before i can get anywhere near a transmission shop

  6. #6

    Default

    Sorry I listened to both, at the first video it appeared to me that you had no play in the front U joint. Second video...Sorry I don't even want to guess.
    What I would do is take a long handled screw driver hold it to my ear and with it in drive place the metal end on the Tranny case at the end clossest to the drive shaft and the plastic end firmly on your ear (I also find it works better if you have one of those foam ear plugs in). move the metal end around and listen to where it sounds the loudest and then you may gain an idea what may be an issue if you have a drawing of some sort you may have a better idea. Sorry I realize this isn't much help!

    Keep us posted!
    Finally a signature and Avatar! I also posted some pics in the Gallery.
    2011 2500HD Crew Cab 4X4 Z71 6Liter.
    2011 Outback Travel Trailer 260FL
    So Happy to not be on the edge of GVWR Over Load!!

  7. #7

    Default

    There should be a tail piece on the end of the tranny, it is removed when a transfer case is installed. If your lucky, the problem is in the tail piece and not the main body of the tranny.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  8. #8

    Default

    dropped my truck off at the transmission shop today, should be getting a call tomorrow!

  9. #9

    Default

    Yikes....

  10. #10

    Default

    they called back!
    they said they found evidence of a needle bearing in the planetary gear set that fell apart :/
    complete rebuild...


    they quoted $1953.24

    shop,labor,etc.

    with a 3-year, 75,000 mile warranty...

    is this a good price guys?

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