2012 Chevrolet Avalanche Owner's Manual - Page 358

10-28 Vehicle Care Vehicle Storage Four-Wheel Drive Transfer Case When to Check Lubricant Refer to Maintenance Schedule on page 11‑3 to determine when to check the lubricant. How to Check Lubricant { WARNING Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10‑80 for tips on working around a battery without getting hurt. Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger. To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug hole, some lubricant will need to be added. Add enough lubricant to raise the level to the bottom of the fill plug hole. Use care not to overtighten the plug. When to Change Lubricant Refer to Maintenance Schedule on page 11‑3 to determine how often to change the lubricant. What to Use Refer to Recommended Fluids and Lubricants on page 11‑11 to determine what kind of lubricant to use. Active Transfer Case A. Fill Plug B. Drain Plug