Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual page 197

196 Vehicle Care
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
For the single cab vehicle, the
dipstick is located to the right side of
the automatic transmission at the
rear of the engine. Tilt the cab up to
inspect it.
For the crew cab vehicle, the
dipstick is located beneath the
rear-of-engine inspection panel.
After unlatching the A/T fluid
inspection cover, the dipstick will be
visible.
Inspection
Wait at least 30 minutes before
checking the transmission fluid if
you have been driving at high speed
for a long period of time, in city/
heavy traffic or while pulling a trailer.
1. Start the engine, and drive the
vehicle for approximately
10 minutes to warm up the
engine. During 10 minutes, the
automatic transmission fluid
should reach a temperature of
approximately 70 - 80 °C
(158 - 176 °F). During the
winter when temperatures are
low, adjust the amount of
driving time according to the
actual conditions.
2. Park the vehicle on level
ground, and firmly apply the
parking brake.
3. With the engine idling, move
the selector lever from the P
position to the 1 position
while pressing the brake pedal,
and then return the lever from
the 1 position to the P
position.
4. With the engine still idling, pull
out the dipstick and wipe it with
a clean cloth.