{CAUTION:
Operating the engine with the air
cleaner/ lter off can cause you or others
to be burned. The air cleaner not only
cleans the air; it helps to stop ames if
the engine back res. If it is not there and
the engine back res, you could be
burned. Do not drive with it off, and be
careful working on the engine with the air
cleaner/ lter off.
Notice:If the air cleaner/ lter is off, a back re
can cause a damaging engine re. And, dirt
can easily get into your engine, which will
damage it. Always have the air cleaner/ lter in
place when you are driving.
Automatic Transmission Fluid
When to Check and Change Automatic
Transmission Fluid
A good time to check your automatic transmission
uid level is when the engine oil is changed.
Change the uid and lter at the intervals listed in
Additional Required Services on page 440, and
be sure to use the transmission uid listed in
Recommended Fluids and Lubricants on page 447.
331
(g)A uid loss in any vehicle system could
indicate a problem. Have the system inspected
and repaired and the uid level checked.
Add uid if needed.
(h)Change automatic transmission uid and
lter if the vehicle is mainly driven under one or
more of these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C)
or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or
delivery service.
(i)Drain, ush, and re ll cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 337 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.(j)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(k)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals speci ed to help
ensure the safety, dependability, and emission
control performance of your vehicle. Your
GM Goodwrench
®dealer can assist you with
these checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 447.
442
