Vehicle: 2011 3500 Chev Duramax/Allison, Crew Cab, Short Wheel Box, SRW 17,000 miles on the truck.
Trailer: 2013 Big Horn Elite 3260, approx 13,000 Pounds
This past weekend we heading home and was pulling a 6% grade at about 55mph, 2500 rpm. As we approached the top of the grade, we heard a loud...