GMC 1996 Sonoma Owner's Manual page 237

2.2L Engine
To remove this air cleaner, open both clamps and push
the rear of the air cleaner toward the rear of the engine
compartment.
Insert a new air filter. Then replace the air cleaner
assembly, making certain the PCV air tube is properly
seated in the left hand valve cover and the clamps are
securely fastened.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See "Scheduled Maintenance Services" in the Index.
Operating the engine with the air
cleaner 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
cleaner off.
~
I
NOTICE:
If the air cleaner 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 in place when you're driving.
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