Ram exhaust brake at slow speeds.
This issue was brought up in another tread and I didn't want to hijack it so.. On our first trip out with the new TV we went to the NC mountains...of course :B. Going up the 6-7 % grade was awesome...
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Just a guess but 3krpms and 15mph sounds like first gear. Idk if the TC will lock in first and the EB typically won't engage if the TC is unlocked.
