1997 GMC Jimmy Owner's Manual - Page 280

Four-wheel Drive and All-Wheel Drive Most lubricant checks in this section also apply t o four-wheel-drive vehicles. However, they have two additional systems that need lubrication. How. to Check Lubricant Transfer Case When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See "Periodic Maintenance Inspections" in the Index. I f the level is below the bottom o f the filler plug hole, you'll need t o add some lubricant. Add enough lubricant to raise the level t o the bottom of the filler plug hole. What to Use Refer to the Maintcnance Schedule to determine what k i n d of lubricant to use. See "Recommended Fluids and Lubricants" i n the Index. 6-21