Chevrolet Silverado 4500HD 2022 Owner's Manual page 357

Repair or replace brake line tubes, hoses,
or fittings as required.
Fluid Precautions
The brake system consists of two
completely separate hydraulic systems
operating with two different and
incompatible fluids: power steering fluid and
hydraulic brake fluid.
Warning
The wrong or contaminated brake fluid
could result in damage to the brake
system. This could result in the loss of
braking leading to injury, death,
or property damage. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Immediately wash off any
painted surface.
The following should always be observed to
avoid fluid contamination. Use only properly
identified and specified (or equivalent) fluids,
and add fluids only to the following
locations:
Brake fluid to the brake master cylinder.
Power steering fluid to the power
steering fluid pump reservoir.
Brake Fluid Level
During normal vehicle operation and
servicing, the fluid level will vary between
the bottom of the ring (full) and 2.5 cm
(1 in) in the master cylinder mounted front
reservoir. Do not fill the master cylinder to
the top of the reservoir. Overfilling may lead
to overflow. Use the MIN FILL and MAX FILL
lines embossed on the outside of the
reservoir. Do not add fluid above the MAX
FILL line.
Service and Maintenance
Check and refill the brake fluid reservoir:
1. Clean the reservoir cap before removal to
prevent dirt or water from entering the
reservoir.
2. Visually inspect the fluid level.
3. If necessary, add brake fluid from a clean
unopened container.
4. Use only DOT 3 brake fluid certified to
meet manufacturer specifications.
5. Fill the brake fluid reservoir to the MAX
line, but do not exceed the MAX fill
specifications.
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