Remove Skin From Chicken If Desired. Place Chicken In A 5-Qt. Slow Cooker. Sprinkle With Soup Mix And Garlic Salt. Pour Dressing And Water Over Chicken. Cover And Cook On Low For 8-9 Hours. Remove Chicken; Cool Slightly. Skim Fat From Cooking Juices. Remove Chicken From Bones; Cut Into Bite-Size Pieces And Return To Slow Cooker. Serve With A Slotted Spoon On Buns.