2009 Chevrolet Express Van Owner's Manual - Page 287
2009 Chevrolet Express Van Manual
Page 287 highlights
What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-15. If the level is below the bottom of the filler plug hole, you may need to add some lubricant. Front Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See Scheduled Maintenance on page 6-4. How to Check Lubricant To get an accurate reading, the vehicle should be on a level surface. When the differential is cold, add enough lubricant to raise the level to 3/8 inch (10 mm) below the filler plug hole. When the differential is at operating temperature (warm), add enough lubricant to raise the level to the bottom of the filler plug hole. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-15. 5-47