Today I was hauling a load with my dad's truck, 6.7 cummins with auto transmission with BD pressure loc, and Smarty on SW 5 with all revo settings on 2.. I was towing about a 17K load up hill in 4th and all of a sudden this one red light, like a flash or spark symbol, came up on my dash. I can't really remember, but almost thought the RPMs jumped up a bit too. Would this light come on from slippage from possibly my torque converter? Are they that weak?