1993 GMC Jimmy Owner's Manual - Page 288

Service & Appearance t+m How to Check Lubricant: B __ KO997 If the level is below the bottom of the filler plug hole, you'll need somelubricant. Add enoughlubricanttoraisetheleveltothebottom fillerplughole. to add of the What to Use: Refer to the Maintenance Schedule to determinewhatkindoflubricantto use.See"RecommendedFluidsandLubricants" in theIndex, b Front Axle When to Check and Change Lubricant: Refer to the Maintenance Schedule to determine how often to checkthe lubricantandwhen to changeit.See"ScheduledMaintenanceServices"in theIndex. 6-22