Automatic Transmission Fluid; (8 Speed Transmission); Engine Air Cleaner/Filter - GMC 2016 Sierra Owner's Manual

370 Vehicle Care
Consistency of Readings
Always check the fluid level at least
twice using the procedure described
previously. Consistency (repeatable
readings) is important to maintaining
proper fluid level. If readings are still
inconsistent, contact the dealer.
Automatic Transmission
Fluid (8 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. This vehicle is not
equipped with a transmission fluid
level dipstick. There is a special
procedure for checking and
changing the transmission fluid in
these vehicles. Because this
procedure is difficult, this should be
done at the dealer. Contact the
dealer for additional information or
the procedure can be found in the
service manual. See Service
Publications Ordering
Information 0 481.
Caution
Use of the incorrect automatic
transmission fluid may damage
the vehicle, and the damage may
not be covered by the vehicle
warranty. Always use the
automatic transmission fluid listed
in Recommended Fluids and
Lubricants 0 463.
Change the fluid and filter at the
scheduled maintenance intervals
listed in Maintenance Schedule
0 454. Be sure to use the
transmission fluid listed in
Recommended Fluids and
Lubricants 0 463.

Engine Air Cleaner/Filter

If the vehicle has a diesel engine,
see 8-Cylinder Pickup Models
under Engine Air Cleaner/Filter in
the Duramax diesel supplement for
the correct inspection and
replacement procedures.
The engine air cleaner/filter is near
the center of the engine
compartment. See Engine
Compartment Overview 0 358.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on changing and
inspecting the engine air filter, see
Maintenance Schedule 0 454.
How to Inspect the Engine Air
Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/
filter, make sure that the engine air
cleaner/filter housing and nearby
components are free of dirt and
debris. Remove the engine air
cleaner/filter. Lightly tap and shake
the engine air cleaner/filter (away
from the vehicle), to release loose
dust and dirt. Inspect the engine air
cleaner/filter for damage, and
replace if damaged. Do not clean