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Anyone have this noise

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by feb, Dec 9, 2012.

  1. feb

    feb Member

    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. TimTom64b

    TimTom64b Member

    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.
  3. RayVoy

    RayVoy Active Member 1000 Posts

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

    feb Member

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

    j cat Active Member 1000 Posts

    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. Pikey

    Pikey Moderator Staff Member 1000 Posts

    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.
  7. feb

    feb Member

    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. RayVoy

    RayVoy Active Member 1000 Posts

    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. j cat

    j cat Active Member 1000 Posts

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

    O'Brien New Member

    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.

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