Page 262 of 404
RECOMMENlED SAE YISCOSITY 6R;ADZEWGlNE OILS
roR BEST FUEL ECONOMY AND COLO.STARTING,:SEL;ECT' THE LOWEST
SA€-VISCOSITII GRADE OIL .€OR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER
LOOK
FOR THIS 1
SYMBOL
SA€ 5w-30
COLD
WEATHER
DO-NOT USE SAE 20W~50.0A ANY OTHER GRAB€ OIL N.OT RECQMMENDEU
ProCarManuals.com
Page 266 of 404

Refer to the Maintenance Schedule to determine when to
replace the air filter. See “Scheduled Maintenance
Services”
in the Index.
Operating th, dnginc .Ah 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 .cotild be .burned. Don? 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:f?re.
And, dirt can easily- get
into your engine, which
will damage it. Always
have the air cleaner inplace when you’re drfving.
Automatic Transmission Fluid
When to Check and Change
A good time to check your automatic transmission-fluid
level kwhen.
the. engine oil is changed.
Change
both the fluid, and filter every 15,OO.O miles
(25 -000 km) if the vehicle is mainly driven under .one-or
more .of these conditions:
0 In heavy city traffic where the outside temperature.
In hilly or mountainous terrain.
When doing .frequent trailer towing,
Us - - such as fo.und.in taxi, - 1ice:Qr de1ivery:semice.
If you do not us.e your vehicle under any of these
conditions,, change
the fluid and filter every
50,000 miles -(83 000 km).
See “Scheduled Maintenance Services” in the Index..
regularly reaches190”F
(32°C) or
higher.
How .to Check
Because this, operation can be a little difficult, you
may choose to have-this done at your GM-dealership
Service Department.
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Page 274 of 404

When the differential is cola, aaa enough lubricant
raiise. the level to 1/2 inch
(1 2 .m) below the filler
plug hole.
When the differential is’ at operating. temperature.
(warn), add enough lubricmt to raise the level to the
b-ottom of the filler plug hole.
what to Use
Refer to the Maintenance Schedule. to determine what
kind
of lubricant to use. See “Recommended. Fluids and
Lubricant$’
in the Index.
Engine Coolw
The mob- -s stem in y,our-vehicle i.s filled with
DES-COUL engine coolant. This c:oolant.is devigned
to. remain in your vehicle for 5: years or 150,OO.Q miles
(240 000 km) whichever occurs, first, ifyou add,only
DEX-COOL’ extended lifecoolant.
The
following. expl.&s your cooling system and hcwto
add:cool&tt
whenit is low. If you have a problem with
engine overheating,
see “Engine. Overheating” .in
the Index.
-
(8
A 5-0/56mm~ure -or ner and DEX-COOL@
coolant will:
Give freezing protection down to- -34O.F (-37 O C>.
Give boiling protection up to 265°F (129°C).
Protect against rust and cormsim.
Help keep the proper engine temperature.
a Let the waning lights and gages, -work as
they ‘should.
I
NOTICE:
When addmg coolant, it-is important that you .me
on~y DEX-COOL@- (silicgtelfree) coolant.
.If c-oolant other than DEX-COOL isladded to the
system, premature engine, heater core .or
radiator corrosiron may result. In addition,. the-
engine coolant
will require-change sooner - at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage -caused
by the use
.of coolant other than UEX=COOL@ is not
covered by your new vehicle. warranty.
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