Place the wings into the bottom of your slow cooker.
Combine the wing sauce, Ranch dressing mix and salt and pepper and pour over the wings.
Cover and cook on high for 2 1/2 hours - 3 hours until the meat is starting to pull back from the bones.
Carefully transfer the wings to a baking sheet lined with foil and sprayed with non-stick spray. Place under the broiler and broil until just starting to crisp.
Let cool slightly then serve with Ranch dressing for dipping.