In large bowl, mix ground chuck and onion soup mix together with hands. Make small to medium meatballs. Lightly brown in fry pan on low to medium heat. After browning place a paper towel on a plate and place meatballs.
In a sauce pot mix chili sauce, bbq sauce and brown sugar. Put meatballs in sauce and let simmer on low for 30 to 45 minutes.
To serve put meatballs in a crockpot on low heat and place on a table for guests to help themselves.