GMC 2011 Savana - Manual (Page 301)

Black plate (35,1) GMC Savana Owner Manual - 2011
Vehicle Care 10-35
How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
If the level is below the bottom of
the fill plug hole, some lubricant
may need to be added.
When the differential is cold, add
enough lubricant to raise the level
to 10 mm (3/8 in) below the fill
plug hole.
When the differential is at operating
temperature (warm), add enough
lubricant to raise the level to the
bottom of the fill plug hole.
What to Use
Refer to Recommended Fluids and
Lubricants on page 11‑7 to
determine what kind of lubricant
to use.
Rear Axle
When to Check Lubricant
Refer to the Maintenance Schedule
to determine how often to check
the lubricant. See Scheduled
Maintenance on page 11‑2.
How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
If you have the 1500 Series, the
proper level is from 15 mm (5/8 in) to
40 mm (1 5/8 in) below the bottom of
the fill plug hole. The proper level
for the 2500 and 3500 Series is
from 0 to 6 mm (1/4 in) below the
bottom of the fill plug hole. Add only
enough fluid to reach the proper
level.