2-25
Engine Coolant Heater (If Equipped)
In very cold weather, 0F (-18C) or colder, the engine
coolant heater can help. You'll get easier starting and
better fuel economy during engine warm
-up. Usually,
the coolant heater should be plugged in a minimum of
four hours prior to starting your vehicle.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The engine coolant heater cord is located on
the passenger's side of the vehicle, above the
headlamp assembly.
3. Plug it into a normal, grounded 110
-volt AC outlet.
CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into a properly grounded three
-prong
11 0
-volt AC outlet. If the cord won't reach,
use a heavy
-duty three-prong extension cord
rated for at least 15 amps.
4. Before starting the engine, be sure to unplug and store
the cord as it was before to keep it away from moving
engine parts. If you don't, it could be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact
your dealer in the area where you'll be parking your
vehicle. The dealer can give you the best advice for
that particular area.
5-9
NOTICE:
Use the proper towing equipment to avoid
damage to the bumper, fascia or fog lamp areas
of the vehicle.
With current trends in automotive styles and design,
it is essential that the correct towing equipment is used
to tow a vehicle. Your vehicle can be towed with
wheel
-lift or car-carrier equipment only.
Consult your dealer or a professional towing service if
you need to have your vehicle towed. See ªRoadside
Assistanceº in the Index.
Engine Overheating
You will find a coolant temperature gage on your
vehicle's instrument panel. Your driver information center
will also display messages about engine overheating.
See ªEngine Coolant Temperature Gageº in the Index.
Overheated Engine Protection
Operating Mode
Should an overheated engine condition exist and the
message HOT STOP ENGINE is displayed, an overheat
protection mode which alternates firing groups of
cylinders helps prevent engine damage. In this mode,
you will notice a loss in power and engine performance.
This operating mode allows your vehicle to be driven
to a safe place in an emergency; you may drive up to
50 miles (80 km). Towing a trailer in the overheat
protection mode should be avoided.
NOTICE:
After driving in the overheated engine protection
operating mode, to avoid engine damage, allow the
engine to cool before attempting any repair. The
engine oil will be severely degraded. Repair the
cause of coolant loss, change the oil and reset the
oil life indicator. See ªEngine Oilº in the Index.
6-18
As shown in the chart, SAE 5W-30 is best for your
vehicle. However, you can use SAE 10W
-30 if it's going
to be 0F (
-18C) or above. These numbers on an oil
container show its viscosity, or thickness. Do not use
other viscosity oils, such as SAE 20W
-50.
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 where the temperature falls
below
-20F (-29C), consider using either an
SAE 5W
-30 synthetic oil or an SAE 0W-30 oil. Both
will provide easier cold starting and better protection for
your engine at extremely low temperatures.
6-19 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
Your vehicle has a computer that lets you know when to
change your engine oil. This is not based on mileage,
but on engine revolutions and engine operating
temperature. When the computer has calculated that the
oil needs changing, the GM Oil Life System will
indicate that a change is necessary. The mileage between
oil and filter changes will vary depending on how you
drive your vehicle
-- usually between 3,000 miles
(5 000 km) and 10,000 miles (16 000 km) since your
last oil and filter change. Under severe conditions, the
system may come on before 3,000 miles (5 000 km).
Never drive your vehicle more than 10,000 miles
(16 000 km) or 12 months (whichever occurs first)
without an oil change.The system won't detect dust in the oil. So, if you drive
in a dusty area, be sure to change your oil and filter
every 3,000 miles (5 000 km) or sooner. Remember to
reset the Oil Life System whenever the oil is changed.
How to Reset the Oil Life System
Always reset the engine Oil Life System to 100% after
every oil change. It will not reset itself. To reset the OIL
LIFE reminder, do the following:
1. With the ignition on, press the SELECT right
arrow button to OIL so the OIL LIFE percentage
is displayed.
2. Press RESET and hold for five seconds. OIL LIFE
XXX% will appear and then when the button is
released OIL LIFE 100% will be displayed.
6-23
Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle 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
regularly reaches 90F (32C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
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 at
100,000 miles (166 000 km).
See ªScheduled Maintenance Servicesº in the Index.
How to Check
Because this operation can be a little difficult, you
may choose to have this done at the 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.
NOTICE:
Too much or too little fluid can damage your
transaxle. Too much can mean that some of the
fluid could come out and fall on hot engine parts
or exhaust system parts, starting a fire. Be sure to
get an accurate reading if you check your
transaxle fluid.
6-26
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see ªEngine Overheatingº in
the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL coolant will:
Give freezing protection down to
-34F (-37C).
Give boiling protection up to 265F (129C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
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.
6-77
Cooling System13.0 quarts (10.5 L) . . . . . . . . . . . . .
Engine Crankcase7.0 quarts (6.6 L) . . . . . . . . . . . .
When changing filter, up to 0.5 quart (0.5 L) more oil
may be needed.
Fuel Tank17.5 U.S. gallons (66.2 L) . . . . . . . . . . . .
Air Conditioning Refrigerant
See refrigerant . . . . . .
charge label under the hood.
Power Steering
Pump Only 1.0 pint (0.5 L). . . . . . . . . . . . . . . . . . .
Complete System 1.5 pints (0.7 L). . . . . . . . . . . . .
Tire Pressures
See Tire-Loading Information . . . . . . . .
label on the rear edge of the driver's door.
Wheel Nut Torque100 lb-ft (140 N´m) . . . . . . . . . .
All capacities are approximate. When adding, be sure
to fill to the appropriate level as recommended in
this manual.
Engine Specifications
The following engine specifications are for the
(LX5) 3.5L V6.
VIN Engine Code H. . . . . . . . . . . . . . . . . . . . . . . . . . .
Type V6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 212 cubic inches (3.5L). . . . . . . . . . . .
Horsepower 215. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compression Ratio 9.3:1. . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . . . .
Thermostat Temperature
Specification 180F (82C) . . . . . . . . . . . . . . . . . .
The following engine specifications are for
the (L47) 4.0L V8.
VIN Engine Code C. . . . . . . . . . . . . . . . . . . . . . . . . . .
Type V8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 279 cubic inches (4.0L). . . . . . . . . . . .
Horsepower 250. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compression Ratio 10.3:1. . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-7-3-4-5-6-8 . . . . . . . . . . . . . . . . . . .
Thermostat Temperature
Specification 180F (82C) . . . . . . . . . . . . . . . . . .