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  1. T

    not as much power on the highway

    thanks ill change everything tomorrow and ill find out
  2. T

    not as much power on the highway

    Hello I'm new here and I just recently ran.into this problem with my 98 Tahoe 4+4 I do have a check engine light on for cylinder 6 misfire (spark plugs or wires) but it's been on for a week now and never had this problem before until yesterday. When I'm on the highway I normally run about 70mph...
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