Chevrolet 2009 Kodiak Owner's Manual page 242

How to Inspect the Engine Air Cleaner/
Filters (Gas V8 8.1L, Caterpillar 7.2L and
Isuzu 7.8L Diesel Engines)
CAUTION:
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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. If it is not there and
the engine backfires, you could be burned. Do not
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
Notice: If the air cleaner/filter is off, a backfire can
cause a damaging engine fire. And, dirt can easily get
into the engine, which will damage it. Always have
the air cleaner/filter in place when you are driving.
The engine air cleaner/filter is located in the center of
the engine compartment.
5-40
To inspect the engine air cleaner/filter:
Isuzu 7.8L Diesel Only
2. Unclip the four clips that hold the upper housing to
the lower housing and remove the upper housing.
3. Remove the filter from the vehicle and lightly shake
the filter to release loose dust and dirt. If the filter
remains caked with dirt, a new filter is required.
4. Reinstall the upper housing and make sure that the
air compressor hose is reconnected by pushing the
connector back onto the port. Listen for the
connector to click to be sure that the air compressor
hose is securely locked and connected.
1. Disconnect the air
compressor hose by
pinching the connector
ring to release the
connector lock.