Brakes - Chevrolet 4500 HD 2023 Manual

258 Vehicle Care
Use a high quality premixed solvent
available at most dealers or service stations.
Avoid hard water when mixing windshield
washer solvents. Hard water contaminants
may plug orifices in the washer system and
reduce performance.
Do not use radiator antifreeze in the
windshield washer; it could cause cab paint
damage.
In cold weather, warm the windshield with
the defrosters before using the washer, to
help prevent icing that may block the
driver's vision.
Refilling Windshield Washer Fluid
1. The windshield washer fluid tank (1) is
located under the instrument panel on
the passenger side.
2. Open the cap (2) and fill the tank with
windshield washer fluid.
Upon factory shipment, new vehicles contain
only tap water in the washer fluid tank.
Adjust the concentration of the fluid to suit
your own usage.
Follow the instructions provided with the
windshield washer fluid regarding the ratio
for mixing with tap water.
Poor quality products, engine coolant, and
soapy water must not be used. Failure to
observe this precaution can result in nozzle
blockage or damage to painted surfaces.
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.
Hydraulic Brake Assist Function
This device boosts hydraulic pressure to
provide the necessary braking force during
sudden braking or when strong braking
force exceeding the boost limit of the brake
booster unit is required. It also provides
braking assistance when the performance of
the brake servo unit is decreased. The