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Thread: Clunking noise

  1. #1
    Newbie
    Join Date
    Jul 2009
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    Jacksonville ,Florida
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    Default Clunking noise

    I'm having an issue with my 09 silverado when I let off the gas and coast I'm o.k. But when I reapply the gas there's a loud clunking noise any ideas
    Justin

    09 silverado
    4.8 stock
    Leather
    2" eibach lowering shackles
    More to come soon

  2. #2

    Default

    It could be slack in the drive shaft being taken up when you reapply the gas. I've never heard of it in a truck, but I know I've had that problem with certain sports cars before.
    Scott

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  3. #3
    Master Mechanic tattooed4life's Avatar
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    Default

    awfully new for u joints to go bad. maybe wanna check them just in case.
    1997 Chevy K3500
    4x4 X-Cab Dually
    454 Dual Exhaust

  4. #4
    Newbie
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    Default

    Yeah im hoping it's not major it just seems like it's not keeping positive connection between the tranny and the rear end
    Justin

    09 silverado
    4.8 stock
    Leather
    2" eibach lowering shackles
    More to come soon

  5. #5

    Default

    Sounds like EXACTLY what happened to my 2003 Silverado. It was U-Joints on mine. Your's is awful new to have that problem. Factory Defect Maybe. Check with the dealership and your warranty.
    Current Daily Driver:
    2003 Chevrolet Silverado 1500 - 4WD - 4.8L V8 - True Dual Exhaust Setup, Cat Delete, Cherry Bomb Glass Packs

  6. #6

    Default

    warranty? sounds like slap in the drive line probably the spline shaft on the rear drive shaft

    2003 Z71 Silverado LS
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  7. #7
    Master Mechanic CarpenterGuy's Avatar
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    Default

    thats the joint on your driveshaft closing up the gap. it makes a clunk. both of my trucks do and have done that. it's normal as far as i know
    2006 Silverado Z71 - 97,000 - totaled, RIP
    2006 Silverado Z71 - 122,000 (K&N 77 Series CAI, PowerAid TBS, Magnaflow dual rear exit, 33x12.50 Mickey Thompson MTZ, Tuff Country Torsion Keys, Tuff Country Add-A-Leafs)
    1966 C10 swb stepside (Gen I 350, Turbo 400 trans, dual cyl power brakes, front discs)
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  8. #8
    Jr. Apprentice spottweld's Avatar
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    Default

    sounds like u joints to me the problem will get steadily worse and the noise can either come from behind the tranny or back by the rear

  9. #9
    Legend 2ToNe04's Avatar
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    Default

    take it back to the dealers i assume you still have warranty since its an 09?

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  10. #10

    Default

    Hey...I have an 08 Sierra that has the same issue. Also, When taking off, especially if I am turning and taking off(ie intersections) it seems as if the truck is slipping somehow. The engine goes, but the tires seem to take a lil bit to "kick in". Def need to take it to the dealer, but I will probably get the "we couldn't reproduce the problem" response. The dealer I have been working with, unfortunately decided not to sign on with the new GM and shut their doors...too bad.
    2008 GMC Sierra Ext Cab 4x4 5.3 w/AFM :great:

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