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weird vibrations

Discussion in 'General Chevy & GM Tech Questions' started by cocacolamanjosh1984, Sep 14, 2008.

  1. cocacolamanjosh1984

    cocacolamanjosh1984 New Member

    My 04 tahoe4.8l, has gotten an odd vibration at 1300-1500 rpm through all the gears. It sounds like metal vibrating against other metal. I have checked both converters and can't get them to rattle also went along the exhaust system, no luck. It only does it from 1300-1500rpm then it is quite no problems other than this. please help
  2. 95CTburb19

    95CTburb19 New Member 1000 Posts

    check the heatshield on your muffler, its usually tack welded on and these welds can break after a while. Mine 95 did that and it was the cat. I ordered a new cat and the tranny went! so that fixed my problem.

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