GMC SIERRA 2020 Owner's Manual page 346

2. Disconnect the outlet duct by
loosening the air duct
clamp (1).
3. Disconnect the electrical
harness connector (2) from the
cover.
4. Remove the three screws on
top of the cover of the housing,
then slide and lift the cover.
5. Lift and remove the engine air
cleaner/filter.
6. Lightly tap and shake the
engine air cleaner/filter, away
from the vehicle, to release
loose dust and dirt. Replace
the engine air filter if damaged.
7. Reverse steps 2 5 to reinstall
the engine air cleaner/filter
cover housing.
8. If equipped, reset the engine
air filter life system after
replacing the engine air filter.
See Engine Air Filter Life
System 0 343.
6.6L V8 Engine (L8T)
1. Locate the air cleaner/filter
assembly. See Engine
Compartment Overview 0 332.
2. Remove the eight screws on
top of the cover of the housing,
then lift the cover.
3. Remove the engine air cleaner/
filter from the housing. Take
care to dislodge as little dirt as
possible.
4. Clean the engine air cleaner/
filter sealing surfaces and the
housing.
Vehicle Care
5. Inspect or replace the engine
air cleaner/filter.
6. Reverse Steps 2 4 to reinstall
the filter cover housing.
7. If equipped, reset the engine
air filter life system after
replacing the engine air filter.
see Engine Air Filter Life
System 0 343.
Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. Use caution
when working on the engine. Do
not start the engine or drive the
vehicle with the air cleaner/filter
off, as flames may be present if
the engine backfires.
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