Only about 70,000 miles. Pull horse trailer through mountains. Pulls fine, but three times over past three or four years, engine has cut off, but after sitting for about 15 minutes, started right back up and ran fine. Scary, because last time last October, was taking downhill exit off Interstate 77 in Virginia near Ivanhoe. Coasted into intersection..When tried immediately to restart it, no sound, no click, nothing. After about 15 minutes, tried it again, and it started right up., Drove the last 30 miles to destination.
Stayed four days, unhooked horse trailer, left trailer and horse overnight, and drove motorhome the 130 miles home without incident. Went back the next day with my Suburban, and brought horse and trailer home.
Scared to drive mountains with risk of cut off, and no brakes pulling horse trailer. Help...