GMC 2009 Sierra User Manual

Page 333

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Cold Check Procedure

Use this procedure only as a reference to determine if
the transmission has enough fluid to be operated safely
until a hot check procedure can be made. The hot check
procedure is the most accurate method to check the
fluid level. Perform the hot check procedure at the first
opportunity. Use this cold check procedure to check
fluid level when the transmission temperature is
between 80°F and 90°F (27°C and 32°C).

1. Locate the transmission dipstick at the rear of

the engine compartment, on the passenger side
of the vehicle.

The dipstick handle has
this graphic. See Engine
Compartment Overview
on page 5-12 for more
information.

2. Flip the handle up, and then pull out the dipstick

and wipe it with a clean rag or paper towel.

3. Install the dipstick by pushing it back in all the way,

wait three seconds, and then pull it back out again.

4. Check both sides of the dipstick, and read the

lower level. Repeat the check procedure to
verify the reading.

5. If the fluid level is below the COLD check band,

add only enough fluid as necessary to bring the
level into the COLD band. It does not take
much fluid, generally less than one pint (0.5L).
Do not overfill.

6. Perform a hot check at the first opportunity

after the transmission reaches a normal
operating temperature between 160°F to 200°F
(71°C to 93°C).

7. If the fluid level is in the acceptable range,

push the dipstick back in all the way, then flip
the handle down to lock the dipstick in place.

5-21

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