Chevrolet Kodiak 2008 Owner's Manual page 246

Hood Inlet Seal
If your vehicle is being used in heavy snow conditions
or for snow plowing, there is a possibility of snow and
ice build up in the inlet to the air cleaner, blocking airflow
to the engine and negatively impacting engine
performance.
To prevent the blocking of air, remove the hood inlet
seal, by doing the following:
1. Loosen the clamp that holds the seal to the air
cleaner.
2. Slide the seal off.
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3. Store the seal in the inlet, located on the underside
of the hood.
4. Store the clamp on the coolant surge tank. Pull the
overflow tube out of the white plastic retainer, slip
the clamp over and reinstall the hose.
The seal will need to be replaced on to the air cleaner
for normal driving, especially in the warmer months.