In a medium bowl, mix soy sauce, Italian-style salad dressing, barbeque sauce, vegetable oil, garlic, steak seasoning, seasoning salt, salt and ground black pepper.
Place steak in the mixture. Cover and marinate in the refrigerator 12 hours, or overnight. Turn the steak once during marination.
Preheat an outdoor grill for medium to high heat and lightly oil grate.
Cook steak on the prepared grill 5 to 7 minutes per side, or to desired doneness.
