Page 142 of 357

2-85 Engine Coolant Temperature Gage
This gage shows the
engine coolant temperature.
If the gage pointer moves
into the red area, your
engine is approaching an
overheating condition.
If you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop
your vehicle and turn off the engine as soon as possible.
See ªEngine Overheatingº in the Index.
Malfunction Indicator Lamp
(Service Engine Soon Light in the United
States or Check Engine Light in Canada)
United States Canada
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner environment.
The SERVICE ENGINE SOON or CHECK ENGINE
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent. This
may prevent more serious damage to your vehicle.
This system is also designed to assist your service
technician in correctly diagnosing any malfunction.
Page 152 of 357

3-3
BI-LEVEL: Air is directed through the upper air
vents and the heater ducts.
VENT: Air flows through the upper air vents.
HEATER: This setting directs most of the air
through the heater ducts and some of the air through
the windshield defroster vents.
BLEND: Air is directed through the windshield
defroster vents and the heater ducts.
DEFROST: This setting directs most of the air
through the windshield defroster vents and some of the
air through the heater ducts.
Cooling
The air conditioner works best if you keep your windows
closed. On very hot days, open the windows just long
enough for the hot air to escape.
1. Turn the air control knob to A/C for normal cooling.
For faster cooling turn the knob to MAX.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.
Heating
The heater works best if you keep your windows closed
while using it.
1. Turn the air control knob to heater.
2. Turn the fan control knob to the desired speed.
3. Turn the temperature control knob to a
comfortable setting.
If your vehicle is equipped with an engine coolant heater,
you can use it in cold weather (around 20F/
-8C or
lower) to improve heater performance on initial start up.
See ªEngine Coolant Heaterº in the Index.
Bi
-Level Heating
You may want to use bi
-level heating on cool, but
sunny days. This setting directs cool air toward your
body and warmer air toward your feet.
1. Turn the air control knob to bi
-level.
2. Turn the temperature control knob to a
comfortable setting.
3. Turn the fan control knob to the desired speed.
Page 228 of 357
5-12
When it is cool, remove the coolant recovery tank cap and
look at the dipstick. When the engine is cold, the coolant
level should be at FULL COLD. If it isn't, you may have
a leak in the radiator hoses, heater hoses, radiator, water
pump or somewhere else in the cooling system.
CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Don't touch them.
If you do, you can be burned.
Don't run the engine if there is a leak. If you run
the engine, it could lose all coolant. That could
cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
NOTICE:
Engine damage from running your engine
without coolant isn't covered by your warranty.
See ªOverheated Engine Protection Operating
Modeº in the Index.
Page 229 of 357

5-13
NOTICE:
When adding coolant, it is important that you
use only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL is added
to the system, premature engine, heater core or
radiator corrosion 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 DEX
-COOL is not
covered by your new vehicle warranty.
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they aren't, your vehicle needs service.
How to Add Coolant to the Coolant
Recovery Tank
If you haven't found a problem yet, but the coolant level
isn't at the FULL COLD mark, add a 50/50 mixture of
clean, drinkable water and DEX
-COOL engine
coolant at the coolant recovery tank. (See ªEngine
Coolantº in the Index for more information.)
CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mixture will. Your vehicle's coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
your engine could get too hot but you wouldn't
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a 50/50 mixture of clean, drinkable water
and DEX
-COOL coolant.
Page 234 of 357
5-18
5. Then fill the coolant recovery tank to the FULL
COLD mark.
6. Put the cap back on the coolant recovery tank, but
leave the radiator pressure cap off.7. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fans.
8. By this time, the coolant level inside the radiator
filler neck may be lower. If the level is lower, add
more of the proper DEX
-COOL coolant
mixture through the filler neck until the level
reaches the base of the filler neck.
Page 236 of 357
5-20
2. Then keep turning the pressure cap, but now push
down as you turn it. Remove the pressure cap.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
3. Fill with the proper DEX-COOL coolant mixture.
4. Continue to fill the radiator up to the base of the
filler neck.
5. Rinse or wipe the spilled coolant from the engine
and compartment.
6. Start the engine and allow it to run in idle for
approximately four minutes. By this time, the
coolant level inside the radiator will be lower. Add
more of the proper mixture through the filler neck
until the level reaches the base of the filler neck.
Page 237 of 357
5-21
7. Shut the engine off and replace the pressure cap.
Be sure the arrows on the cap line up like this.8. Then fill the coolant recovery tank to the proper level.
Page 252 of 357

6-
6-1
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel
6
-5 Fuels in Foreign Countries
6
-6 Filling Your Tank
6
-8 Filling a Portable Fuel Container
6
-8 Checking Things Under the Hood
6
-12 Engine Oil
6
-18 Engine Air Cleaner/Filter
6
-20 Automatic Transmission Fluid
6
-23 Manual Transmission Fluid
6
-24 Hydraulic Clutch
6
-25 Rear Axle
6
-26 Engine Coolant
6
-29 Power Steering Fluid
6
-30 Windshield Washer Fluid
6
-31 Brakes
6
-35 Battery
6
-36 Bulb Replacement6
-40 Tires
6
-50 Appearance Care
6
-50 Cleaning the Inside of Your Vehicle
6
-52 Care of Safety Belts
6
-53 Cleaning Glass Surfaces
6
-53 Cleaning a Removeable Roof Panel
6
-54 Cleaning the Outside of Your Vehicle
6
-55 Cleaning Your Convertible Top
6
-56 Cleaning Aluminum or Chrome-Plated
Wheels (If Equipped)
6
-57 Underbody Maintenance
6
-58 GM Vehicle Care/Appearance Materials
6
-59 Vehicle Identification Number (VIN)
6
-59 Service Parts Identification Label
6
-60 Electrical System
6
-66 Replacement Bulbs
6
-66 Capacities and Specifications
6
-67 Normal Maintenance Replacement Parts