Front Axle; Bulb Replacement - GMC 2003 Yukon Owner's Manual

Front Axle

When to Check Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant. See Part A: Scheduled
Maintenance Services on page 6-4 .
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.
5-52
If the level is below the bottom of the filler plug hole,
you may need to add some lubricant.
When the differential is cold, add enough lubricant to
raise the level to 0 to 3/8 inch (9.5 mm) below the filler
plug hole.
When the differential is at operating temperature
(warm), add enough lubricant to raise the level to the
bottom of the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See Part D: Recommended
Fluids and Lubricants on page 6-17 .

Bulb Replacement

For any bulb changing procedure not listed in this
section, contact your dealer.
See Replacement Bulbs on page 5-59 for the proper
types of bulbs to use.