GMC 2003 Savana Van Owner's Manual page 263

Check the indicator again after your vehicle has been
driven. If the area inside the indicator is orange and
CHANGE AIR FILTER appears, the filter should
be replaced.
To replace the engine air cleanedfilter, do the following:
1. Unhook the retainer clips and remove the cover.
2. Lift the filter out of the engine air cleanedfilter
housing. Care should be taken to dislodge as
little dirt as possible.
3. Clean the engine air cleaner/filter housing.
4. Install the new engine air cleanedfilter into the
engine air cleanedfilter housing. Make sure that
it fits properly into the housing.
5. Install the cover and fasten the retaining clips.
6. After the engine air cleaner/filter is properly
serviced, the indicator should be reset. Push
the button on the top of the indicator to reset
it
to
the green (clean) filter zone.
See Normal Maintenance Replacement Parts on
page 5-106 for the proper filter to use.
Refer to the maintenance schedule to determine when
to replace the engine air cleaner/filter. See Part A:
Scheduled Maintenance Services on page 6-4.
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 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 cleanedfilter 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 cleaner/filter in place when
you're driving.
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