Our 2500 Suburban had the 4L80E tranny while the 2005 Silverado 2500HD had the Allison 1000 tranny, both were heavy duty and bullet proof. The Silverado came from the factory with a tranny temp gauge and I added one to the Suburban. Neither ever showed elevated tranny temps regardless of the load, grade, ambient temperature, etc...
Dan - If you ever move to a diesel powered truck from that gas powered one, it will be like night and day as far as towing.
Dan - If you ever move to a diesel powered truck from that gas powered one, it will be like night and day as far as towing.