GMC duramax diesel 2016 Supplement Manual page 98

Then, without shutting off the
engine, follow these steps:
Cold Check Procedure
The purpose of the cold check is to
determine if the transmission has
enough fluid to be operated safely
until a hot check can be made. The
fluid level rises as fluid temperature
increases. DO NOT fill above the
COLD band if the transmission fluid
is below normal operating
temperatures.
1. Pull out the dipstick and wipe it
with a clean rag or paper towel.
The transmission dipstick is
near the center of the engine
compartment. See Engine
Compartment Overview 0 87
for location.
2. Push it back in all the way, wait
three seconds, and then pull it
back out again.
3. Check the fluid level reading.
Repeat the check procedure to
verify the reading.
4. If the fluid level is within the
COLD band, the transmission
may be operated until the fluid
is hot enough to perform a hot
check. If the fluid level is not
within the COLD band, add or
drain fluid as necessary to
bring the level into the middle
of the COLD band.
5. Perform a hot check at the first
opportunity after the normal
operating temperature of 71 °C
(160 °F) to 93 °C (200 °F) is
reached.
6. If the fluid level is in the
acceptable range, push the
dipstick back in all the way.
Hot Check Procedure
The fluid must be hot to ensure an
accurate check. The fluid level rises
as temperature increases.
Vehicle Care
1. Operate the transmission in D
(Drive) until the normal
operating temperature of 71 °C
(160 °F) to 93 °C (200 °F) is
reached.
2. Pull out the dipstick and wipe it
with a clean rag or paper towel.
3. Push it back in all the way, wait
three seconds, and then pull it
back out again. Repeat the
check procedure to verify the
reading.
4. Safe operating level is within
the HOT band on the dipstick.
The width of the HOT band
represents approximately 1.0 L
(1.06 qt) of fluid at normal
operating temperature.
5. If the fluid level is not within the
HOT band, add or drain fluid as
necessary to bring the fluid
level to within the HOT band.
6. If the fluid level is in the
acceptable range, push the
dipstick back in all the way.
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