I use cruise almost all the time. '16 3500 CTD w/Asian. Towing a Montana total weight 24,000 m/l. Transmission temp never gets above 165 unless in stop and go, so no reason to lock out 6th gear. Cruise, tow/haul and exhaust brake makes this truck almost drive itself. Just so you know, I spent many years driving a variety of trucks; straight, semis and PUs pulling stock, grain and fertilizer trailers, so this ain't my first rodeo. This truck is smarter than I and most of you so let it do its thing.
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