1. In a large bowl, add the cheddar cheese, cream cheese, mayonnaise, pimentos, garlic powder, and onion powder. Using a spoon, fold the cheese mixture until smooth.
  2. Heat grill to medium to medium-high heat. When grill is heated, place hot dogs on grill. Grill to preferred doneness.
  3. When hot dogs are done, spread the pimento cheese on the sides of the buns. Place the hot dogs into buns and serve immediately.