2009 Chevrolet Colorado Owner's Manual - Page 295
2009 Chevrolet Colorado Manual
Page 295 highlights
Front Axle When to Check and Change Lubricant It is not necessary to regularly check your front axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired. How to Check Lubricant A. Drain Plug B. Filler Plug If the level is below the bottom of the filler plug hole, located on the transfer case, 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. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-12. To get an accurate reading, the vehicle should be on a level surface. 5-45
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