1Preheat your grill to medium-high heat.
In a large bowl, combine the chili garlic sauce, sugar, salt, and black pepper.
Add the country-style ribs to the bowl and coat them thoroughly with the sauce mixture.
Place the ribs on the grill and cook for about 20-25 minutes, turning occasionally, until they are cooked through and have a nice char.
While the ribs are grilling, slice the onion and serrano peppers.
In the last 5 minutes of grilling, add the sliced onions and serrano peppers to the grill to cook slightly.
Remove the ribs, onions, and peppers from the grill and let the ribs rest for a few minutes before serving.
Serve the ribs with the grilled onions and serrano peppers on the side.