Automatic Transmission Fluid; Engine Air Cleaner/Filter - Chevrolet Low Cab Forward 2023 Manual

202 Vehicle Care

Automatic Transmission Fluid

Warning
Overfilling of the automatic transmission
can cause the fluid to be "PURGED" out
of the breather hose onto the hot engine
parts and can cause a fire.
You and others could be seriously injured.
Both quality and quantity of fluid are
important factors that have a significant
influence on the performance and durability
of the automatic transmission. Be sure to
use only the dealer recommended fluid for
replenishment, and observe the specified
fluid level.
Too much or too little transmission oil could
damage your transmission. Too much could
cause your transmission to overheat and
fluid to spill out from the breather hose. Be
sure to get an accurate reading if you check
your transmission fluid.
When cleaning around the dipstick and
guide tube, make sure that you thoroughly
wipe away all of the dirt and dust etc.
Failure to do so may cause a fault in the
transmission.
Do not let coolants (ethylene glycol type),
water based substances, or other fluids etc.,
mix with the fluid. Otherwise, degraded
performance and faulty operation of the
system will result.
Checking the Automatic Transmission Oil
level
This operation could be difficult and you
may choose to have this done at your
dealer.
If you choose to do it yourself, then be sure
to follow all the instructions below or you
could get a false reading on the dipstick.
Position of the Dipstick
The dipstick is located to the left side of the
automatic transmission at the rear of the
engine. Tilt the cab up to inspect it.
How to Check and What to Use
The Allison Automatic Transmission
Operator s Manual that came with the
vehicle shows how to check the automatic
transmission fluid and what fluid to use.

Engine Air Cleaner/Filter

Air Cleaner
Use of clogged air cleaner element not only
reduces engine output but also causes
increased fuel consumption and an increased
Diesel Particulate Filter (DPF) regeneration
frequency.
Be sure to use a genuine air cleaner
element. If other air cleaner element is used,
it may cause the sensor to output a wrong
signal.
See Maintenance Schedule 0 262.
Air Cleaner Indicator Light
When the air cleaner indicator light comes
on, check the air cleaner element. If the air
cleaner element is clogged, replace the air
cleaner element.
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