"If you are in PA (where I was born) it is a lot different pulling these 10,000 ft passes in Colorado".
So I hear. Maybe 30 years ago a PA aunt and uncle were headed for the coast with a Suburban diesel pulling a small RV. Got to the Rockies and it about croaked on 'em. Had to head into a GM dealer for some adjustments before continuing on west. Then if IIRC, do a reset on the other side? They came back via the southwest, uncle ditched that vehicle not long after they got home.
Those were GM's initial diesels in the mid 80s that were pretty crappy. Have friends that've been to CO and other mountain states hunting, with late model diesel 4x4s. Don't remember them grumbling much about altitude issues, like my uncle had back then?
