Cadillac 2008 SRX Owner's Manual page 306

To inspect or replace the filter, do the following:
1. Remove the two screws located on the top of
the cover.
2. Disconnect the coolant recovery hose so that it
is not going across the top of the engine air
cleaner/filter.
3. The two sides of the airbox are hinged at the
bottom. Open the airbox by pushing the top of
the airbox cover toward the engine.
4. Remove the air filter by lifting it straight up through
the opening in the airbox.
5. Inspect or replace the engine air cleaner/filter.
See Normal Maintenance Replacement Parts
on page 6-14 for the correct part number for
the filter.
6. Reinstall the cover by reversing Steps 1 through 4.
5-22
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 your engine, which will damage
it. Always have the air cleaner/filter in place
when you are driving.