Engine Fan; Power Steering Fluid - Chevrolet Silverado 4500HD 2022 Manual

282 Vehicle Care
If the vehicle no longer has the overheat
warning, the vehicle can be driven. Just to
be safe, drive slower for about 10 minutes.
If the warning does not come back on, drive
normally and have the cooling system
checked for proper fill and function.
If the warning continues, pull over, stop, and
park the vehicle right away.
If there is still no sign of steam and the
vehicle is equipped with an engine driven
cooling fan, push down the accelerator until
the engine speed is about twice as fast as
normal idle speed for at least five minutes
while the vehicle is parked. If the warning is
still there, turn off the engine and get
everyone out of the vehicle until it
cools down.
The decision may be made not to tilt the
hood, but to get service help right away.

Engine Fan

The vehicle has a clutched engine cooling
fan. When the clutch is engaged, the fan
spins faster to provide more air to cool the
engine. In most everyday driving conditions,
the fan is spinning slower and the clutch is
not fully engaged. This improves fuel
economy and reduces fan noise. Under
heavy vehicle loading, trailer towing, and/or
high outside temperatures, the fan speed
increases as the clutch more fully engages,
so an increase in fan noise may be heard.
This is normal and should not be mistaken
as the transmission slipping or making extra
shifts. It is merely the cooling system
functioning properly. The fan will slow down
when additional cooling is not required and
the clutch disengages.
This fan noise may also be heard when
starting the engine. It will go away as the
fan clutch partially disengages.

Power Steering Fluid

See Engine Compartment Overview 0 272 for
reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering fluid unless there is a leak
suspected in the system or an unusual noise
is heard. A fluid loss in this system could
indicate a problem. Have the system
inspected and repaired.
How to Check Power Steering Fluid
The fluid level should be between the MIN
HOT and MAX HOT levels on the reservoir if
the fluid is hot when checked. If the fluid is
cold when checked, the fluid level should be
between the MIN COLD and MAX COLD
levels on the reservoir.
To check the power steering fluid:
1. Tilt the hood open. See Hood 0 269.
2. Check to see if the fluid level is at or
above the MIN HOT level and below the
MAX HOT level if the fluid is hot, or if
the fluid level is at or above the MIN
COLD level and below the MAX COLD line
if the fluid is cold.