What is the fluid capacity of a GM 8.2 rear end?

The fluid capacity of a GM 8.2 rear end varies slightly depending on the specific model and configuration, but it generally holds about 2.5 to 3 quarts of gear oil. It's important to use the correct type of gear oil, typically a high-quality,API GL-5-rated 80W-90 gear oil. Always check the manufacturer's specifications for the most accurate information.