GMC 2006 DURAMAX - How to Inspect; When to Inspect

Van Models
The air cleaner/filter
assembly may have an
air cleaner/filter restriction
indicator that lets you
know when the engine air
cleaner/filter is dirty and
needs to be serviced.
The air cleaner/filter restriction indicator is located on
the air cleaner resonator.
When to Inspect
Inspect the air cleaner/filter every 15,000 miles
(25 000 km) and replace the filter if necessary.
How to Inspect
When the restriction indicator is in the red/orange
“change” zone, replace the filter and reset the
restriction indicator.
To inspect and replace the filter and reset the restriction
indicator, do the following:
The air cleaner/filter assembly is located at the front of
the engine compartment.
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