how well dows the lmm do in high altitude situations

Like towing 9k up, through and over the Eisenhower tunnel with still enough to drop the hammer and move out whenever you feel like it going 70mph?

Turbo diesel is much more responsive and powerful at altitude than gas, for the decent, add the tow/haul transmission braking and top off with the engine brake on 2011MY and you will never have had so much fun getting to the destination :cool:

yep what he siad:D

Hey...it will go and go and go.......I tow in Montana with 14000 lb 5er.....It just goes

it'll go just about as good as it will at sea level :cool:

No problems with mine. Put it in drive and relax.

I've left Louisiana each of the last three years loaded, to MT, NM and ID
Wife still makes me slow down on them passes

I pull my 13,000 pound 5th wheel over the passes all the time with no trouble out of the LMM. Best purchase I ever made for a tow vehicle.