Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/2/21
Vehicle Care
209
The washer should never be used while the
tank is empty. Operating the washer with
the tank empty can result in motor damage.
Brakes
For the most effective braking and for
maximum life from brake system
components, follow these suggestions:
.
Keep any obstructions from interfering
with brake pedal travel.
.
Keep tires properly inflated. Improperly
inflated tires can reduce the efficiency of
the brakes.
Follow the recommendations for brake
checks in the Maintenance Schedule.
GM replacement brake lining material is
recommended for this vehicle to maintain
the balance between front and rear brake
performance. GM replacement brake parts
have been carefully selected to provide the
proper brake balance for purposes of both
stopping distance and controllability over
the full range of operating conditions.
Installation of front or rear brake lining
material with performance different from
that of the replacement parts recommended
for this vehicle can change the intended
brake balance of this vehicle.
Air Tanks
There are two air tanks on your vehicle. One
is behind the rear axle and the other is
between the front and rear axles near the
exhaust pipe. These tanks, over time, may
accumulate water. You must drain them by
pulling the lanyard attached to the drain tap
at the bottom of the air tank to discharge
the water.
After discharging water, check that air is not
leaking from the drain tap.
If a large volume of water drains from an
air tank, the desiccant replacement is
necessary, have it performed by the nearest
GM dealer.
Caution
.
Exhaust components may be hot and
cause burns, so, use extreme caution
near hot exhaust components.
.
Avoid touching hot exhaust
components.
.
Do not leave the drain tap of the air
tank open for an extended period of
time if your vehicle is equipped with
an air suspension. Doing so is
dangerous since the vehicle lowers.
(Continued)
Caution (Continued)
.
Water collecting in the air tank may
cause moisture to freeze inside the air
piping in winter. This is very
dangerous because the air compressor
may fail and as a result, sufficient
braking forces may no longer be
available.
.
The lanyard for air tank located
between the front and rear axles is
very close to the exhaust system.
Exhaust components may be hot and
cause burns, so, use extreme caution
near hot exhaust components
.
Avoid touching the hot exhaust
components when reaching for and
pulling the air tank drain tap lanyard.
For air tanks installed at other locations,
perform the water draining procedure
described above.
There are three air tanks that should be
checked for moisture. The primary, the
secondary, and the air dryer purge tanks all
have drain valves.
