GMC CHEVROLET Silverado 6500HD 2019 Owner's Manual page 388

Routinely clean the hubcap to
ensure that the lubricant level can
be easily observed through the clear
window as intended.
In situations where the window is
clean on the outside, but discolored
on the inside, check the lubricant
level by removing the rubber fill/vent
plug and insert a finger into
the hole.
The specified lubricant level for GM
clear window type hubcaps is from
the minimum line to 0.8 cm (5/16 in)
above the minimum line.
If the lubricant level suddenly drops
dramatically below the minimum
level, see the service manual for
diagnostic procedure.
Alignment
Maintaining front axle alignment is
very important to achieving
maximum tire life and vehicle
control. Inspecting steer axle tires in
the first 5 000 km
(3,000 mi)-16 000 km (10,000 mi) of
service will generally show if tires
are wearing normally.
Rapid outside shoulder wear on
both tires indicates too much
toe-in.
Rapid inside shoulder wear on
both tires indicates too much
toe-out.
Excessive wear on the inside or
outside of one steer tire, but not
the other, can indicate a toe-in or
toe-out condition coupled with a
misaligned front or rear axle.
Pulling to the right or left can
indicate misalignment of the
front or rear axle, unequal tire
pressures, or a damaged/
mismatched tire.
See Tires 0 331 for additional
related information.
Service and Maintenance
Brakes
General Information
Warning
To prevent personal injury or
death, avoid breathing brake
lining fiber dust. Always use a
respirator while performing brake
maintenance. Follow precautions
listed below.
Warning
To prevent property damage,
personal injury, and/or death,
always check and maintain
brakes in proper condition and
adjustment. Out-of-adjustment
brakes could cause reduced
braking ability.
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