2011 GMC Canyon Regular Cab Owner's Manual - Page 284

10-32 Vehicle Care need to be added. Remove the plug and add enough lubricant to raise the level to the bottom of the fill plug hole. Use care not to overtighten the plug. How to Check Lubricant To get an accurate reading, the vehicle should be on a level surface. How to Check Lubricant What to Use See Recommended Fluids and Lubricants on page 11‑6. Front Axle When to Check and Change Lubricant It is not necessary to regularly check the front axle fluid unless there is a leak suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the filler plug hole, located on the front axle, some lubricant may need to be added. When the differential is cold, add enough lubricant to raise the level to 12 mm (1/2 in) below the fill plug hole. A. Drain Plug B. Fill Plug If the level is below the bottom of the fill plug hole, located on the transfer case, some lubricant will