Tsb 05-10-12 ?
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Tsb 05-10-12 ?
Does anybody know what TSB 05-10-12 is/does? I took my truck in because of a clunk from trasnmission. They said normal 3-2 downshift but they updated my PCM per TSB 05-10-12 and the clunk is less noticable but my gas milage has gone down(15mpg to 13mpg).
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Joined: Aug 2004
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I dunno...but my truck was in the week before that and there were no recent updates for the PCM since my truck was in last several months before. It might be the same PCM udpate as before, but they are just applying it as a remedy to your problem?
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