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Thread: banging noise

  1. #1

    Default banging noise

    2009 express cargo van with 15000 miles on clock :a banking noise is heard in the rear area when going over mild to severe bumps.the noise is resembles the sound you would hear if you lightly hit the frame with a large hammer.the noise can not be heard if the brakes are applied.visual inspection was done and nothing was found to cause the issue.
    i am not sure how to research recalls or tsb's .

  2. #2

    Default

    check your exhaust hangers and muffler it might be the tube over the axle tappin on the belly of the van

  3. #3

    Default

    Quote Originally Posted by grimreapersshadow View Post
    check your exhaust hangers and muffler it might be the tube over the axle tappin on the belly of the van
    this I did,wasnt the cause.the mystery is why the noise isnt there with the brakes applied.

  4. #4
    Jr. Mechanic TMRuiz's Avatar
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    Default

    Check your leaf hangers, I put a set of lowering shackels on my 2000 and one of them came loose and would make that same noise when hitting bumps but not while the brakes where applied (I guess because the axle was slightly twisted putting the hanger in a bind preventing it from making the noise, just guessing), but thats one place you might try looking.

    Good luck and hope you get it fixed.
    [/SIGPIC]07 Silverado LS factory 20's, spray in bedliner, in-bed cargo managment system, matching tint on front windows, K&N CAI, and Hypertech Max Engery Tuner and yet even more mods to come.

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