1995 GMC Safari Owner's Manual - Page 227

All- WheelDrive If you have an all-wheel-drive vehicle, be sure to perform the lubricant checks described in this section. However, they have two additional systems that need lubrication. Transfer Case When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See "Periodic Maintenance Inspections" in theIndex. How to Check Lubricant If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole. What to Use Refer to theMaintenance Schedule todetermine what kind of lubricant to use. See "Recommended Fluids and Lubricants" in the Index. Front Axle When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to checkthe lubricant and when to change it. "Scheduled Maintenance Services" in See the Index. 6-21