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The Allison and your truck MAY not be more intelligent than you ;) but pays more attention than you will. Put it in tow mode and in drive and let it do its own thing. ( with a newer truck, set the engine brake to on as soon as you put trans in drive ). This is easier on the truck and on fuel economy.
 

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Discussion Starter #22
Ron, thanks for the reply. The "hills - inclines" were in Arkansas, and of course I have no idea what degree of incline they were. While they may not have been extremely steep, it was also the length of the incline. The longer the incline, the slower the truck went. Other pick ups pulling travel trailers were passing us, and I would guess they were going about 55 - 60mph. My concern at that time was the high mileage on the truck and fearing the tranny would not handle it. Now it sounds that going slow might have been much worse than keeping up the truck's speed. I always use the tow haul mode when pulling the camper. So my take away from all the responses is to use manual 5th gear through the ups and downs of the hills / mountains. And trust the truck to do what's right - as designed. Thanks much for the help... kip
 

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Keep in mind if you use manual to hold 5th gear the grade braking will not work as designed.

Engage TH, put it in D, set the CC and relax. 7000# is an easy pull.
 
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Discussion Starter #24
OK, thanks for straight forward answer... and the info. I will trust the truck to know what it's doing, and enjoy the drive. The folks on this forum have been a great help, and I deeply appreciate it! Kip
 
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