Hello, I'm having issues with my exhaust brake on my 2014 with 12,000 miles. Its been sporadically not working when I am towing. The truck down shifts but no exhaust brake comes on. Yesterday I had my camper and horse trailer on my truck at the dealership because I am having issues when loaded heavy with a vibration or harmonic when the torque converter locks up in 2nd or primarily 3rd gear. During the test drive with the tech in the truck the exhaust brake quite working and the tech starts playing with the EB button changing modes and turning it off and on. No change. It eventually started working again on its own. The discouraging part is that he stated his uncles 5500 is having the same issue and he can't figure it out. Any thoughts or past experience on this one? I sure would like to get some of these issues resolved on my truck.
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