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  1. #1
    Sr. Apprentice feb's Avatar
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    Default Anyone have this noise

    When I take off in my 2011 Silverado, I hear a clunk in the front. It will make the noise only once and only when it sits for a while and only going forward. Example, I back out to the road, go forward and there is the noise. I will go to the store, come out, start up and leave. It will make the noise when I take off. I don't think it is in the steering. It is not a metallic hit, more like a dull clunk. Any ideas?

  2. #2

    Default

    That sounds like a universal joint to me... Only really way to find it is to get it on a lift so you can find the source. I'm sure others will chime in.
    2009 Chevy Silverado 2500HDLT 6.0L w/ Towing Package, Dick Cepek GM8 Rims, Dick Cepek FC II 33X11.50R17,RKSport Ram-Air Hood(Functional), Lazer Lite Aluminum Tonneau Cover, Road Armor Stealth Bumper, PIAA Lighting, Diablo Trinity Tuner, Diablew Custom Tune, BullyDog Cold Air Intake, American Racing Headers w/highflow cats, Corsa Performance Sport Exhaust, Custom Striping, Black Bowties front and rear, Fuel Grille Inserts, Recon Headlights, Readylift Shocks, Readylift Upper Contol Arms, 2" Blocks in the Rear..

    Future Plans: HD Tie Rods, Under hood upgrades, Crower Camshaft and possibly electric fans.

  3. #3

    Default

    2 wheel drive, or 4 wheel drive; and, is it in 2 wd?
    Ray

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

  4. #4
    Sr. Apprentice feb's Avatar
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    Default

    Sorry, I forgot to say. It is a 2 wheel drive.

  5. #5
    Legend

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    everett, massachusetts
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    Default

    block the front wheels lift rear wheel off the ground and rotate the drive shaft in neutral check for any lateral movement and als the U joints for damage. could be the tranny or rear diff bushing.

    surprised a vehicle this new with this .

  6. #6

    Default

    I wonder if it is your a/c compressor cycling on or off. My does it occasionally for no specific reason. It is usually right after I start it and then take off. It does it one time and then not again until i shut the truck off.

    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)

  7. #7
    Sr. Apprentice feb's Avatar
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    Default

    That is a thought, however, it does it when the A/C is not on also. I am stumped. Sometimes it seems it is a bump on the lower firewall and sometimes it sounds way up front

  8. #8

    Default

    When I have a problem like that (where I can't localize the sound), I will stand near the (in your case) front and have someone else start and move the vehicle. From outside, you can usually get a better idea of the location.

  9. #9
    Legend

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    Default

    if this is the 1500 strut suspenion this could be those struts. look for these issues with on line searching.

  10. #10
    Sr. Apprentice
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    Default

    Quote Originally Posted by feb View Post
    That is a thought, however, it does it when the A/C is not on also. I am stumped. Sometimes it seems it is a bump on the lower firewall and sometimes it sounds way up front
    This may sound wierd ,but when I had my 2011 silverado I had an annoying thud sound in the front end as well. After many attempts at locating it I discovered it was the rubber hood stops on either side of the under hood that were in need of a light coat of grease.Once greased it never happened again. Mine used to do it more when I would either make a slow speed turn on an uneven apron or driving slow over a speed hump. Worth a try.
    2012 silver ice metallic Silverado CC 4X4 /6.2L / 373/9.5" rear max trailering package/ 18" Z71 rims with 285/65/18 BFG TA/KO Ebony leather interior / 2011 grill insert with black mesh/rear fender liners and bed rail protectors/ Z71 skid plates/GM bed mat/2" billet aluminum under strut front leveling kit

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