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  1. #1
    Member barryz's Avatar
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    white
    2000 transam ram air WS6

    banging noises in the back

    Hey guys if i hit a good dip in the road i hear a big bang in the back sometimes on the left some times on the right.

    I have kyb adjustable shocks and ground control eiback lowering kit never had problems before



    thankss greetings barry

  2. #2
    Veteran 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    I would crawl under the car and see if you see any metal on metal contact anywhere. The metal will be shiny. The problem areas are the exhaust where is goes over the axle, the torque arm, and possibly your bump stops since you are lowered.

  3. #3
    Member barryz's Avatar
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    2000 transam ram air WS6

    is it maybe better to take the bump stops out? i did look under the car i think it is the frame hitting the car but i am not sure

  4. #4
    Veteran 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    The bump stops are there to improve your ride quality while protecting your vehicle's suspension. You should not be bottoming out. I only mentioned that because you mentioned you had lowering springs. What setting is your shocks on? Maybe try stiffening them up some if you are contacting there. Or, perhaps your bump stops are deteriorated and need to be replaced. Maybe the sound you are hearing is metal on metal contact.

  5. #5
    expensive tires az gt eater's Avatar
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    white
    04 2500 4x4 crew cab

    Top shock nut loose?

  6. #6
    poor bastard DaytonaBlues's Avatar
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    99 SS clone M6

    old thread but i saw this and i had to tell ya, check the sway bar bushings in the back of the car. the ones that mount to the frame. mine are rounded out just enough where even the slightest movement up and down causes a thud or clunking sound in the back. i ordered from Summit the Energy urethane rear sway bar bushing package for the stock size (19mm or .75 for my 1999 Z28). check those bushings because if they are worn even the least bit it lets that sway bar move around and it makes a racket.
    99 z28 m6 ss clone
    79 Z28 (fast as Fu*k) thanks rich
    SLP Loudmouth, Founder's LCA's, BMR APHRD, Tranzilla T56, Exedy clutch SLP Lid FTRA Powerslot rotors 'brock strut brace, SS wheels and SS hood, hurst, 1LE bars, Energy bushs, EBC's
    past: 95 T/A, 78 Z28, 98 Z28, 86 Z28, 00 GSXR 600

  7. #7
    Junior Member Jdep162's Avatar
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    black
    1998 camaro

    ^^^ good tip, ive been searching on mine for a mysterious clunk, and suspected shocks, but i will check this too, op let us know what u find...

  8. #8
    poor bastard DaytonaBlues's Avatar
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    99 SS clone M6

    You know what else it was, it was also the bushings were worn out in the old lower control arms the previous owner had installed. I bought some cheapo founders performance eBay lca,s for $68 shipped. No more clunking, none. The cheap eBay lcas are actually damn nice ofr the money. Next issue causing noise I think is my beat to hell u joints which I'm sure have never been replaced.

  9. #9
    None Shall Pass Knight's Avatar
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    Black
    99 WS.6 - Modified

    Another thing to keep in mind, if you're lowered, is you need to have an adjustable torque arm. If not, the pinion angle will not be correct, and can cause damage to drivetrain componants like the u-joints, pinion bearing, ect..

  10. #10
    Member barryz's Avatar
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    white
    2000 transam ram air WS6

    Both of the bump stops were gone I replaced Both of them with new ones but I did not have time to drive the car because it snowing here I am also gonna look if my bushings are ok greetings Barry

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