Suburban makes popping noise after shut off [Expired Topic]

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by brodiedehass, Jun 12, 2006.

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  1. brodiedehass

    brodiedehass New Member

    My 2002 Chevrolet Suburban 1500 4x4 LT AUTORIDE makes a loud popping noise from time to time when the vehicle is shut off. I always thought it was either the gas tank or exhaust because it sounds like sheetmetal. Does anyone know what this sound is really coming from? Thanks Brodie
  2. GaryL

    GaryL Epic Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Is it one pop or a series of pops. If it is a series of pops that have a pinging sound, it is most likely the catalytic converter cooling off.
  3. jack77

    jack77 Member

    It is the muffler. I have replaced alot of exhaust systems under warranty for the same condition. If you do not want to spend the money for a new exhaust system, smack the muffler in the center with a large mallet, enough to dent the housing, this will stop the noise for a while, but it will eventually return
  4. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    A proper bashing

    The old bang it with a mallet trick. lol.
    I had a neighbor who couldn't get his ford started on cold mornings without banging the fender with a tire iron. It had an ugly looking fender but it always started when properly bashed. :lol: :lol: :lol:
  5. moogvo

    moogvo Epic Member 5+ Years 1000 Posts

    RE: A proper bashing

    Hmmm... maybe he shoulda spent 20 bux and replaced the starter relay on the inside of the fender...
  6. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    Re: RE: A proper bashing

    You are right, but I think he enjoyed giving the car a good thrashing once and awhile. :lol:
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