I upgraded to a bigger Travel Trailer. a 26 ft that weighs 5000 lbs. When I towed it home on a 80 deg F day. The transmission temp guage in the cluster went up to 227 deg. I was in tow haul and no steep hills mostly flat. My Avalanche / Truck is a LT / LT1 and I installed a B&M Stacked 14500 BTU Aux trans cooler. I suspect my gear ratio 3.08 std. is 227 deg to high? I would hate to have to sell my Avalanche and get a bigger truck. I have been told that the transmission is a weak link in the Avalanche. Any advise would be appreciated.
Mel
Mel