Sensational Sirloin Kabobs

INGREDIENTS

• 1/4 cup soy sauce
• 3 tablespoons light brown sugar
• 3 tablespoons distilled white vinegar
• 1/2 teaspoon garlic powder
• 1/2 teaspoon seasoned salt
• 1/2 teaspoon garlic pepper seasoning
• 4 fluid ounces lemon-lime flavored carbonated beverage
• 2 pounds beef sirloin steak, cut into 1 1/2 inch cubes
• 2 green bell peppers, cut into 2 inch pieces
• skewers
• 1/2 pound fresh mushrooms, stems removed
• 1 pint cherry tomatoes
• 1 fresh pineapple - peeled, cored and cubed