GMC 2003 Yukon Denali User Manual page 308

I
1. To remove the engine air cleaner/filter, loosen the
screws on the cover.
2. Lift the cover upward and remove the engine air
cleaner/filter out of the air cleaner housing. Care
should be taken to dislodge as little dirt as possible.
3. Clean the filter sealing surface and the housing.
4. Install the new engine air cleanedfilter.
Refer to the Maintenance Schedule to determine when
to replace the engine air cleanedfilter. See Part 5:
Owner Checks and Services on page 6- 10.
Operating
L . L
engine
_ _ _ _ _ .
the air cleaner/filter
off can cause you or others to be burned. The
air cleaner not only cleans the air, it stops
flame if the engine backfires. If it isn't there
and the engine backfires, you could be burned.
Don't drive with it off, and be careful working
on the engine with the air cleanedfilter off.
Notice: If the air cieaner/filter is off, a backfire can
cause a damaging engine fire. And, dirt can
easily get into your engine, which will damage it.
Always have the air cleanedfilter in place when
you're driving.
5. Install the cover and tighten the screws.
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