GMC Yukon XL Denali Owner's Manual page 331

If the engine air cleaner/filter
remains covered with dirt, a new
filter is required. Never use
compressed air to clean the filter.
Replacing the Engine Air Cleaner/
Filter
1. Locate the air cleaner/filter
assembly. See Engine
Compartment Overview on
page 10 6.
2. Loosen the four screws on the
cover of the housing and lift up
the cover.
3. Remove the engine air cleaner/
filter from the housing. Care
should be taken to dislodge as
little dirt as possible.
4. Clean the engine air cleaner/
filter sealing surfaces and the
housing.
5. Inspect or replace the engine air
cleaner/filter.
6. Reinstall the cover and tighten
the screws.
Vehicle Care
WARNING
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
10-15