'16 Ram 2500 CTD first tow. Some thing is wrond

[M_R_E_]

My first tow from MI to FL. I towed in towhaul and cruise. couldn't keep speed on small hills. Speed would drop 4 miles before kicking in. Power in mountains was terrible. My old Ford 7.3 would out pull it . Something is wromg. Help

[Walaby]

Try setting top gear to 5 instead of 6. Maybe it's hunting back and forth between 5th and 6th when a slight hill is encountered.

I tow with my 2014 2500 in 5th (lock out 6th) via the selector on the gearshift.

Mike

[Wild_Card]

Yeah...what's this kicking in?

[DanNJanice]

M.R.E. wrote:
My first tow from MI to FL. I towed in towhaul and cruise. couldn't keep speed on small hills. Speed would drop 4 miles before kicking in. Power in mountains was terrible. My old Ford 7.3 would out pull it . Something is wromg. Help

What do you mean speed would drop 4 miles before kicking in. That sound like either a downshift or the cruise kicking in. You need to take it to a dealer, not here.

[the_bear_II]

Something maybe wrong but have you considered this truck may be setup differently than the old Ford.

Things to consider
Gearing in rear end
Torque numbers
If this has a 5 or 6 speed transmission vs. the Ford and it's 3 or 4 speed transmission. Hill climbs will be different the new truck may need to shift down more to get comparable gearing.

Just my two cents.