Cook the macaroni noodles according to the package directions. Drain and rinse under cold water. Set aside.
In a large bowl whisk together the mayonnaise, sour cream, barbecue sauce, hot sauce, mustard, and sugar.
Add the macaroni noodles, chicken, bell pepper, celery, red onion, parsley, salt, pepper, celery salt, and garlic. Mix well to combine.
Chill for at least 2 hours before serving.