Page 296 of 384

6-24 What to Use
Use a mixture of one-half clean, drinkable water and
one
-half DEX-COOL coolant which won't damage
aluminum parts. If you use this coolant mixture, you
don't need to add anything else.
CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid such as 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.
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don't have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
Page 302 of 384

6-30
Refer to the Maintenance Schedule to determine when
to check your brake fluid. See ªPeriodic Maintenance
Inspectionsº in the Index.
Checking Brake Fluid
You can check the brake fluid without taking off the
cap. Just look at the brake fluid reservoir. The fluid level
should be above the MIN mark on the reservoir. If it isn't,
have your brake system checked to see if there is a leak.
After work is done on the brake hydraulic system, make
sure the level is between the MIN and MAX marks.
What to Add
When you do need brake fluid, use only DOT
-3 brake
fluid. Use new brake fluid from a sealed container only.
See ªRecommended Fluids and Lubricantsº in the Index.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This will help keep
dirt from entering the reservoir.
CAUTION:
With the wrong kind of fluid in your brake
system, your brakes may not work well, or they
may not even work at all. This could cause a
crash. Always use the proper brake fluid.
NOTICE:
Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
-based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they'll have to
be replaced. Don't let someone put in the
wrong kind of fluid.
If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake
fluid on your vehicle. If you do, wash it
off immediately. See ªAppearance Careº
in the Index.
Page 347 of 384

6-75
Maxi-Fuse Usage
46 Cooling Fan 2
47 Blank
48 Blank
49 Cooling Fan 1
50 Air Pump
51 Blank
52 Anti
-Lock Brakes
53 Selective Real Time Damping
Electronics
54 Fuse Puller
Replacement Bulbs
High-Beam Headlamp 9005. . . . . . . . . . . . . . . . . . . .
Low
-Beam Headlamp 9006. . . . . . . . . . . . . . . . . . . .
Back
-Up 2057. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Stop/Tail and Turn Signal 3057. . . . . . . . . . . . .
For any bulb replacements or procedures not listed here,
please consult your dealer.
Capacities and Specifications
The following approximate capacities are given in
English and metric conversions.
Please refer to ªRecommended Fluids and Lubricantsº
in the Index for more information.
Automatic Transmission
Drain and Refill 5.0 quarts (4.7 L). . . . . . . . . . . . . .
Overhaul 10.8 quarts (10.2 L). . . . . . . . . . . . . . . . .
Cooling System12.6 quarts (11.9 L) . . . . . . . . . . . . . .
Engine Oil with Filter6.5 quarts (6.1 L) . . . . . . . . .
Fuel Tank18.5 U.S. gallons (70.0 L) . . . . . . . . . . . .
Manual Transmission
(Overhaul)4.1 quarts (3.8 L) . . . . . . . . . . . . . . . . .
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. Recheck fluid level after filling.
Engine Specifications
Type5.7L V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code
LS1 G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LS6 S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 354 of 384

Scheduled Maintenance
7-6Engine Oil Scheduled Maintenance
Change engine oil and filter as indicated by the
Engine Oil Life System (or every 12 months,
whichever occurs first). Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and filter. This is 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 OIL SOON Message 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. See ªOil Life Systemº in the Index
for information on resetting the system.
Use engine oil meeting the GM Standard GM4718M.
An Emission Control Service.
Page 361 of 384

7-13
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant
to perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. See ªEngine Oilº in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL
coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the
Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
See ªTiresº in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.
Power Antenna Service
Clean power antenna mast. See ªAudio Systemsº in
the Index for further details.
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