clunk when i accelerate

Discussion in 'General Chevy & GM Tech Questions' started by rick88122, Dec 4, 2009.

  1. rick88122

    rick88122 New Member

    09 silverado ltz 1800 miles. makes a clunking sound when i start from dead stop. Almost feels like a broken motor mount only its in the rear. like something is lifting up. weird.
  2. dsfloyd

    dsfloyd Epic Member 5+ Years ROTM Winner 1000 Posts

    shouldnt be at this mileage but check ujoints, or since it is under warranty have them look at it.
  3. lube70

    lube70 Member


    The slip yoke on the driveshaft is what is making the noise...nothing wrong...You wan eliminate it by bringing it to chevy and telling them to do the TSB on the driveshaft noise.

    Then no more noise!!!

  4. rick88122

    rick88122 New Member

    they had to loosen and retorque all leaf spring mounting bolts. noise all gone . tried slip yoke didnt work
  5. jaridd

    jaridd New Member

    do you know what the bolts on the leaf springs are supposed to be torqued to?
  6. Big6ft6

    Big6ft6 Rockstar 100 Posts

    look closely at your leaf spring pack, they can crack and cause clunking, but when sitting in the driveway crack can be hard to see. Seems unlikely on such a new truck, but along with other good suggestions thought it'd be worth looking.
  7. Project Reaper

    Project Reaper Rockstar 100 Posts

    ya i have a 97 z71 4x4 and i have all kinds of clunking noises lol. i really wish it was warm enough and more light in the day to check everything out...
  8. 2010SSRS

    2010SSRS New Member

    mine did this too..........they had to replace the output shaft.

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