My 2012 Titan 4x4 has 45000 miles and I do not have to tow with it. I have had it since it was brand new never really had a issue until recently. I heats up to the line before hot at a stop light and then cools as soon as you put it in neutral or get going again. If I sit on the brake and rev to 2000 RPM it jumps way up to hot and fast. Has anyone else ever had this issue or know how to eliminate it ? Its doubtful but could this be from the bullydog GT? the reason I ask is my Bully was stolen out of my truck And has never been uninstalled. I contacted then couple months ago and still haven't gotten a response. Other than that my truck was hit slightly in the front bumper but did not hit the transmission cooler that I know of. Thanks in advance for any info.