crockpot meatballs?

I bought a bag of frozen meatballs from Costco and want to carry our office potluck on Wednesday, but I do not know how they are made ​​in a slow cooker. I looked online and some recipes, said to the mix a jar of grape jelly and a jar of chile sauce (what is this?) Along with the meatballs and let cook in the crock pot for hours. If this is the right recipe, which is the chile sauce? If you have a different recipe or more specific would be great. Thank you!

Chile sauce is next to the tomato sauce in the local supermarket. I made this recipe and has very good criticism. You can also use your favorite barbecue sauce as well. Only the poor over the meatballs and heat to desired temperature. Hickory-Smoked Honey recommend barbecue sauce.