I have a 2007 Nissan Frontier NISMO with automatic transmission. We live in the mountains of Utah. With cruise control engaged in overdrive on steep long descents (5-6% grade, 5-10 miles long) the truck feels like it is either “missing” or the brake keeps cutting in and out. Out of overdrive, it smoothes out. Has anyone else had experience with this?
I think you have found conditions that your Nissan doesn’t perform 100%. I don’t think you have a problem, but downhill in overdrive with cruise on, things will act odd.