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    LB7: Power lose and sputtering when up to temp and flooring it

    Got a 2003 GMC Sierra 2500hd with the lb7 511xxxkm and I’ve been having this problem for a while now and I’m stumped on what could be causing it once in a while when I clear the codes the truck smartens right up and going like a bat out of hell but no codes show up? I clear it tho as if there is...
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