Rear Axle - GMC 2010 T-Series Owner's Manual

3. Disconnect the red positive (+) cable from the
vehicle with the good batteries.
4. Disconnect the red positive (+) cable from the other
vehicle.

Rear Axle

When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant and when to change it. See
Scheduled Maintenance on page 6 5.
Notice: If you drive your vehicle through deep water
that is higher than the front or rear axle, water may
enter the axle housing and cause the axle lubricant
to break down. This could damage the gears inside.
Avoid driving your vehicle through deep water.
You should avoid driving your vehicle through deep
puddles or standing water. If you must drive through
water that is higher than the front or rear axle, see your
dealer immediately afterward to have the condition of
the axle lubricant checked.
5-46
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 filler plug hole,
located on the rear axle, you'll need to add some
lubricant. Add enough lubricant to raise the level to the
bottom of the filler plug hole.
HD2 Axle