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Refer to the Maintenance Schedule to determine when to
replace the air filter. See "Owner Checks and 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
backfkes, you could be burned. Don't drive with
it off, and be careful working on the engine with
the air cleaner off.
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.
1
Automatic Transmission Fluid
If your vehicle has a diesel engine, see "Automatic
Transmission Fluid" in the Diesel Supplement.
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
Change both the fluid and filter every 50,000 miles
(83 000
km)
if the vehicle is mainly driven under one or
more of these conditions:
In heavy city traffic where the outside temperature
In hilly or mountainous terrain.
regularly reaches 90
O F
(32
O
C) or higher.
0
When doing frequent trailer towing.
0
Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any
of these
conditions, change the fluid and filter every 1 0 0 , O O O miles
(166 OOO
k m ) .
See "Scheduled Maintenance Services'' in the Index.
How to Check
Because this operation can be a little difficult, you may
choose to have this done at your GM dealership
Service Department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
6-20
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