Transmission) - GMC 2012 Sierra Series Owner's Manual

10-14 Vehicle Care
Notice: Use of the incorrect
automatic transmission fluid may
damage the vehicle, and the
damages may not be covered by
the vehicle warranty. Always use
the automatic transmission fluid
listed in Recommended Fluids
and Lubricants on page 11 12.
After adding fluid, recheck the
fluid level as described under
How to Check Automatic
Transmission Fluid, earlier in
this section.
When the correct fluid level is
obtained, push the dipstick back
in all the way; then flip the
handle down to lock the dipstick
in place.
Automatic Transmission
Fluid (6-Speed

Transmission)

When to Check and Change
Automatic Transmission Fluid
It is usually not necessary to
check the transmission fluid level.
The only reason for fluid loss is a
transmission leak or overheated
transmission. If a small leak is
suspected, then use the following
checking procedures to check the
fluid level. However, if there is a
large leak, then it may be necessary
to have the vehicle towed to a
dealer service department and have
it repaired before driving the vehicle
further.
Notice: Use of the incorrect
automatic transmission fluid may
damage the vehicle, and the
damages may not be covered by
the vehicle warranty. Always use
the automatic transmission fluid
listed in Recommended Fluids
and Lubricants on page 11 12.
I n f o r ma t i o n P r o v i d e d b y :
Change the fluid and filter at the
scheduled maintenance intervals
listed in Maintenance Schedule on
page 11 3. Be sure to use the
transmission fluid listed in
Recommended Fluids and
Lubricants on page 11 12.
How to Check Automatic
Transmission Fluid
Notice: Too much or too little
fluid can damage the
transmission. Too much can
mean that some of the fluid could
come out and fall on hot engine
parts or exhaust system parts,
starting a fire. Too little fluid
could cause the transmission to
overheat. Be sure to get an
accurate reading if checking the
transmission fluid.