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  1. M

    rough idle/vibration

    I took it to an independent shop. They replaced the exhaust hangers and the vibration is 90% gone. - night and day difference. I guess the exhaust mounts were all worn. Not to sure why the dealer didn't replace that when they had the exhaust off. Now I still feel something, but was in a...
  2. M

    rough idle/vibration

    Talked more with dealer. They said if it were them, a new exhaust is the fix. Would a cat back system work? Any other thoughts?
  3. M

    rough idle/vibration

    Hi all - well no luck and its been to 3 dealers. They see it and feel it but are stumped on a fix. One dealer put a dampner behind the right side cat and the other put a new clamp on the exhaust and realigned it. Since there are no codes they keep thinking it is in the exhaust. Both say it...
  4. M

    rough idle/vibration

    Taking it to dealer Monday. There are really 2 vibrations going on. One at idle where it's fine and then you hear a click and then a surge comes through column, dash and seat. The other is one that I feel only around 1800 RPM - in the feet and column. This may be more of a droan?? I can...
  5. M

    rough idle/vibration

    Thanks for the response. There is 80k on it.
  6. M

    rough idle/vibration

    Hi all - I'm new to the forum and appreciate any help. I just came out of a 2005 ESV into a 2011 Yukon XL 2500. Even though they both had the 6.0L - are there differences? I know the tranny is different and I am still learning shift patterns, etc. Upon start up it sticks around 1200 and...
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