Trans coolers
While towing our 3000lb travel trailer with our 2011 Yukon xl 1500 5.3 litre I found that it does ok for the most part but the transmission did get up to 220 degrees going over Macdonald pass in Monta...
Forum Discussion
A couple things to note re: McDonald Pass. Average grade is just under 6% but there is one significant stretch that's 10%.
If the OP is "doing OK" most of the time I'd just gear down and keep moving if back on that road again.
If the OP is "doing OK" most of the time I'd just gear down and keep moving if back on that road again.
