Page 151 of 410

Emissions Inspection and Maintenance Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need
to know to help your
vehicle pass an inspection:
Your vehicle will not pass this inspection
if the SERVICE
ENGINE SOON or CHECK ENGINE light is on or not
working properly.
Your vehicle will not pass this inspection
if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen
if
you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving.
If you have done this and your vehicle
still does not pass the inspection for lack
of OBD
system readiness, see your dealer or qualified service
center to prepare the vehicle for inspection.
Oil Pressure Gage
United States Canada
The oil pressure gage shows the engine oil pressure in
psi (pounds per square inch) when the engine is
running. Canadian vehicles indicate pressure in kPa
(kilopascals).
Oil pressure may vary with engine speed, outside
temperature and oil viscosity, but readings above the
low pressure zone indicate the normal operating range.
A reading in the low pressure zone may be caused
by a dangerously low oil level or other problems causing
low oil pressure.
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Page 275 of 410
What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the starburst symbol.
This symbol indicates that the oil has been certified by
the American Petroleum Institute
(API). Do not use
any oil which does not carry this starburst symbol.
If you choose to perform
the engine oil change
service yourself, be sure
the
oil you use has
the starburst symbol on the front of the oil
container. If you have your
oil changed for you, be
sure the oil put into
your engine is American
Petroleum Institute certified
for gasoline engines.
You should also use the proper viscosity oil for your
vehicle, as shown in the viscosity chart.
~ ~ -~ ~~ ~~
RECOMMENDED SAE VISCOSITV GRADE ENGINE OILS
HOT
WEATHER 7
"F
c 100 -
+ 80 -
+60 -
t 40 -
c20 -
0-
C
7
"C
t 38
t 27
t 16
+4
7
- 18
LD
1-11
LOOK
FOR THIS
SYMBOL
WEATHER
DO NOT USE SAE 1OW-40, SAE 20W-50 OR ANY OTHER VISCOSITY GRADE OIL NOT RECOMMENDED
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Page 276 of 410

As in the chart shown previously, SAE 5W-30 is the
only viscosity grade recommended for your vehicle. You
should look for and use only oils which have the API
Starburst symbol and which are also identified as
SAE 5W-30.
If you cannot find such SAE 5W-30 oils,
you can use an SAE IOW-30 oil which has the API
Starburst symbol,
if it's going to be 0°F (-18°C)
or above. Do not use other viscosity grade oils, such as
SAE IOW-40 or SAE 20W-50 under any conditions.
Notice: Use only engine oil with the American
Petroleum Institute Certified For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below -20°F (-29"C), it is
recommended that you use either an SAE 5W-30
synthetic
oil or an SAE OW-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for
good performance and engine protection.
When to Change Engine Oil
(GM Oil Life System)
Your vehicle has a computer system that lets YO
when to change the engine oil-and filter. This is
IU know
based on engine revolutions and engine temperature,
and not on mileage. Based on driving conditions,
the mileage at which an oil change will be indicated can
vary considerably. For the oil life system to work
properly, you must reset the system every time the oil is
changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change
is
necessary. A CHANGE ENG OIL light in the Driver
Information Center (DIC) will come on. Change your oil
as soon
as possible within the next two times you
stop for fuel. It is possible that,
if you are driving under
the best conditions, the oil life system may not
indicate that an oil change is necessary for over a year.
However, your engine oil and filter must be changed
at least once a year and at this time the system must be
reset. It is also important to check your oil regularly
and keep it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5
000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
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7
Page 370 of 410

Part D: Recommended Fluids and
Lubricants
Fluids and lubricants identified below by name, part
number or specification may be obtained from your
dealer.
Engine
Oil
Gasoline Engines starburst symbol
of the proper viscosity. To determine
the preferred viscosity for your
vehicle's engine, see
Engine Oil on
Daae 5- 13.
I50/50 mixture of clean, drinkable
Engine Coolant
I water and use only
DEX-COOL@ Coolant. See Enaine
Hydraulic Brake
System
Windshield
Washer Solvent
I Coolant on page 5-22.
"
Delco Supreme 11 Brake Fluid or
equivalent DOT-3 brake fluid.
GM Optikleen@ Washer Solvent or
equivalent.
Usage Fluid/Lubricant
Chassis Lubricant (GM Part No.
U.S. 12377985,
in Canada
. . ~~~
Parking Brake
meeting requirements of NLGI #2, Cable Guides 88901242,
or equivalent) or lubricant
I Cateqow LB or GC-LB.
GM Power Steering Fluid (GM Part --
power Steering
No. U.S. 1052884, in Canada System 993294, or equivalent). ~ ~~ f~
Automatic DEXRON@ -111 Automatic
Transmission Transmission Fluid.
Multi-Purpose Lubricant, Superlube
Canada 10953474, or eauivalent).
Key
Lock (GM
Part No. U.S. 12346241, in
Chassis
Lubrication
-. - -I ~
Chassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or lubricant
meeting requirements of NLGl #2,
Category LB or GC-LB.
SAE 75W-90 Synthetic Axle
Lubricant (GM Part
No. U.S.
Front Axle and Rear equivalent meeting GM Specification 12378261,
in Canada 10953455) or
I 99861 15.
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