2004 Chevrolet Colorado Owner's Manual - Page 318
2004 Chevrolet Colorado Manual
Page 318 highlights
Four-Wheel Drive Lubricant checks in this section also apply to these vehicles. However, there are two additional systems that need lubrication. To get and accurate reading, the vehicle should be on a level service. If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Remove the plug and add enough lubricant to raise the level to the bottom of the filler plug hole. Use care not to overtighten the plug. Transfer Case When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See Additional Required Services on page 6-6. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-13. How to Check Lubricant 5-48
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