Based on my earlier post and those sumitted after, I thought I would try something.........During an oil change, I decided to pull 1.5 quarts from the T-Case which would bring the volume to about 2.3 quarts, close to what the fill volume was from the factory. I then proceeded to go up North for the weekend with boat in tow. Periodically, during highway operations, my ESP and Svc 4WD warning lights would display to include turning off the ESP. This happened roughly 6 times and lasted for about 15 minutes or so. No detectable operating impacts were noted. Shortly after returning, I stopped by Advance Auto and had them scan for historical fault codes and none were present. I topped off the T-Case to the fill hole with about 1.5 quarts and towed the boat the following weekend with no warning lights ever illuminating........I suspect the lights/ESP off issue I experienced was somehow related to heat build up due to low fluid fill, although I don't know if there is a T-Case temp sensor............8/10/11. Just got back from towing the boat with two Yaks on the roof. Even with the T-Case full and using the tow/haul mode, the same issue returned. I am at a loss to figure this out, looks like I may have to take it to the dealer.
Last edited by stumpers54; 08-11-2011 at 09:24 AM.