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2001 Silverado Exhaust Rattle

Discussion in 'Chevy Trucks' started by JBZ, Feb 24, 2014.

  1. JBZ

    JBZ Junior Member
    from Texas
    Messages: 5

    I recently bought a 2001 Silverado 6.0 liter 2500 with 130k miles. I noticed that i hear a rattle when it reaches 1500 rpms. It never rattles at any other rpms. I already removed the manifold covers because they were rusted. But i still hear it. I checked the exhaust from front to back and can not find anything that will rattle but yet it continues to rattle at 1500 rpm. Any body have an idea to what this could be?
     
  2. jstevens66

    jstevens66 Senior Member
    Messages: 155

    Did u actually get underneath the truck and hit the exhaust,(with your fist), from front to back and try to pin point the rattle? Also check the skid plates if it has any. My truck had a loose skid plate and did the same thing. If not the skid plate, I would say the cat, maybe a loose chunk inside there
     
  3. JBZ

    JBZ Junior Member
    from Texas
    Messages: 5

    yes I hit every square inch of the exhaust to try to replicate the sound. Ill check out the cat and the skid plate though.
     
  4. leolkfrm

    leolkfrm PlowSite.com Addict
    Messages: 1,431

    heat shield above the cat tight?
     
  5. myzx6

    myzx6 Member
    Messages: 90

    The cat should if rattled when u hit it if it was the cause, defiantly check skid plates I've also had a few with engine covers not seated on the clips in the back cause the same rattle
     
  6. JBZ

    JBZ Junior Member
    from Texas
    Messages: 5

    Nevermind.. I tried again and turns out it is one of the cats. Is it a big deal to cut off the cats and put in a replacement pipe?
     
  7. myzx6

    myzx6 Member
    Messages: 90

    Are you talking about putting a universal cat in place then no its no big deal but if your talking about cutting out the cats and adding a regular piece of pipe then you will always have a check engine light, will never pass state inspection and removing catalytic converters you could be fined up to $10k
     
  8. JBZ

    JBZ Junior Member
    from Texas
    Messages: 5

    Ok sounds like something I don't want to do lol.. Thanks for your help
     
  9. jstevens66

    jstevens66 Senior Member
    Messages: 155

    I would bring it to a custom muffler shop and have them put a high flow cat in it, definately don't want to run with out a cat, like what has already been said, you might get a check engine light on and will have a hard time getting a sticker. I wouldn't worry about getting a fine, cops wouldn't actually get on the ground and check your exhaust system to see if you have a cat.