Rub ½ package of seasoning mix onto pork tenderloin. On the grill, over high heat, cook tenderloin for 7 minutes, flip and cook for 6 minutes, then turn off the grill with the lid closed and cook for 5 more minutes. Let sit for 10 minutes then slice and serve on a bun. In a small bowl mix the rest of the seasoning mix, sour cream and mayonnaise. Serve as topping for sliders. Serve and enjoy!