Cooling System - GMC Yukon XL 2013 Owner's Manual

10-14 Vehicle Care
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.
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.

Cooling System

If the vehicle is a hybrid, see the
hybrid supplement for more
information.
The cooling system allows the
engine to maintain the correct
working temperature.