To a mixing bowl add the mayonnaise, relish, ketchup, mustard, garlic powder, onion powder and white vinegar. Whisk together.
Add the ground beef, garlic, salt and pepper to a pan. Cook the beef until brown. Remove any grease and remove from heat.
Assemble the salad by adding 1 cup of lettuce, 1/4 of the ground beef, chopped onion, 1 tablespoon cheddar cheese, pickle slices and 2 tablespoons of the dressing. Repeat until all four salads are made.