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- Dec 7, 2011
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Bought a 2007 Denali last November. Seemed to shift a bit funny, coming from a 2003 Avalanche. Had the tranny serviced at the dealer just after I bought it. Still doesn't seem just right. I would say most of the issue is after coasting for a bit, or rolling thru a stop (yield) sign, and then given gas, it seems to shift hard. Sometimes pulling into my driveway, slight uphill, it acts like it slips a bit too. Or maybe like its not downshifting, and over torquing. I have the 6.2l and the 6 speed in it. 89,000 miles.
Am I looking at a rebuild? Is it just that much different than the Avalanche so it seems jerky? Are there additives that might get it going a bit smoother? Ive added the LucasOil tranny additive already. Would a tuner with some shift tuning help?
Any help, suggestions, information, or similar experiences would be greatly appreciated.
Am I looking at a rebuild? Is it just that much different than the Avalanche so it seems jerky? Are there additives that might get it going a bit smoother? Ive added the LucasOil tranny additive already. Would a tuner with some shift tuning help?
Any help, suggestions, information, or similar experiences would be greatly appreciated.