Black plate (12,1)
DURAMAX Diesel Engine (LML/LGH) - 2011
10-12
Vehicle Care
Checking the Fluid Level
Prepare the vehicle as follows:
.
Park the vehicle on a level
place. Keep the engine running.
.
With the parking brake applied,
place the shift lever in P (Park).
.
With foot on the brake pedal,
run the engine for at least
one minute and shift to D (Drive).
Then shift to N (Neutral) and
then R (Reverse) to fill the
hydraulic system. Then, put the
shift lever in P (Park).
.
Allow the engine to run at idle
(500
–
800 rpm). Slowly release
the brake pedal.
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 CHECK 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
located near the center of
the engine compartment.
See
Engine Compartment
Overview on page 10
‑
4
for
more information on location.
2. Push it back in all the way, wait
3 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 CHECK 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
CHECK band, add or drain fluid
as necessary to bring the level
into the middle of the COLD
CHECK 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.
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