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Message: [QUOTE="vr6dub, post: 948783, member: 8023"] ok, thanks for the place to start, I'll check those out this week. The turbos have been checked out and nothing found to be wrong, bellows check good as well. Thus the wtf because it seems like all the hard parts I would assume to be bad aren't. But again, would one of those two parts cause the issues I'm seeing with the trans not downshifting? It just doesn't **** and get like my old 04 did with Vivian's Looney tunes. On her tunes I could be cruising @ highway speeds, step on it and it would downshift and go. This truck just sits in the 5th with TC locked and gradually picks up speed while smoking its butt off the whole time. Both truck had the 3.73 gearing but the main difference is the 04 was lifted 8" and had 37's on it and the 08 is on the 35's and lifted 4's. Starting to make me regret getting an 6.4 instead of going back to the 6.0. [/QUOTE]

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