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Message: <blockquote data-quote="rabidranger" data-source="post: 2002856" data-attributes="member: 37644"><p>Seems like my torque converter (TC) isn't locking up when I first start driving. These last few months once I get out of the neighborhood and up to 55 or so the RPM's float around 1500-2000 in 10th gear as I go up and down hills with the cruise on. Happens on days when I remote start the truck and let it warm up (>5 minutes, and same if I don't, and just start it and head out for work. More skinny pedal just changes gears and makes it harder to tell if the TC is locked or not. I had the trans temp gauge up and it seems to be doing it until the trans warms up a bit, even though it takes almost 20 minutes to get there. it was only 18°F this morning. Has been doing it on ~40°F days too. Sport mode acts odd too. When cruising at 60 in sport mode it would always end up in 10th gear with the cruise control on, now it stays in 7th with the RPM's at about 2k. Figured I'd ask here before taking it to the dealer. 70k miles on the truck.</p></blockquote><p></p>