Yes that sounds right,only when it under acceleration load,I never really got on it heavy didn't realize it maybe exhaust.ThanksI'm rooting for you guys with this issue hope it get resolved,it bothers me to think GM hasn't figured this out.I personally wouldn't want to make another truck till I fixed the problem.I don't blame others buying another brand,but for me I rather be driving a Symbolic American vehicle before I go to my coffin and I willing to deal with whatever issues till that day comes.My next move maybe to buy a older truck do full restore the way I want it and drive a real American Vehicle.The price we pay now I think I would be better off although I like some technology that comes with newer vehicles.my 2 cents worth.
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