Page 248 of 342

Downloaded from www.Manualslib.com manuals search engine Air Conditioning
Every now and then have your dealership check your air conditioning
system
to be sure it has not lost any cooling ability. If you think the system
is not working properly, have your dealership check it out as soon as
possible.
The air conditioning will not work when the temperature
is below 40°F
(4°C).
Lock Cylinders
To be sure your locks operate properly, they must be lubricated.
Refer
to the Maintenance Schedule to determine how often to lubricate them
and what type
of lubricant to use.
You should not use penetrating oils because they could wash out the factory
installed lubricant and cause the lock to bind. De-icers which contain
alcohol could also wash away the lubricant,
so be sure to lubricate the lock
after using a de-icer of this type.
Exhaust System
To help prevent damage to your exhaust system, do not continue to drive
your vehicle if you notice:
0 Engine misfiring
Loss of performance
Exhaust system components hanging lower than normal.
Loud exhaust system noises.
Other unusual operating conditions
Have your engine and exhaust system serviced regularly.
Three-way Catalytic Converter
Your vehicle’s three-way catalytic converter is designed to reduce the
pollutants in your vehicle’s exhaust. Use only unleaded fuel in your vehicle.
If you use leaded fuel, you could damage your three-way catalytic converter
and other engine components.
Engine Control Module System
This system has an oxygen (02) sensor that helps keep your engine’s
air-fuel mixture at a proper level. Use only unleaded fuel in your vehicle. If
you
use leaded fuel, you could damage your oxygen (02) sensor and affect
your vehicle’s emissions.
6-40
Page 255 of 342

Downloaded from www.Manualslib.com manuals search engine If you need to replace any of your wheels, wheel bolts, or wheel nuts,
replace them
only with new GM original equipment parts. This way, you
will
be sure to have the right wheel, wheel bolts, and wheel nuts for your
GM model.
A CAUTION:
Using the wrong replacement wheels, wheel bolts, or wheel nuts
on your vehicle can be dangerous. It could affect the braking
and handling
of your vehicle, make your tires lose air and make
you lose control. You could have a collision in which you or
others could be injured. Always use the correct wheel, wheel
bolts, and wheel nuts for replacement.
I NOTICE:
The wrong wheel can also cause problems with bearing life,
brake cooling, speedometer/odometer calibration, headlamp
aim, bumper height, vehicle ground clearance, and tire or tire
chain clearance to the body and chassis.
Used Replacement Wheels
A CAUTION:
Putting a used wheel on your vehicle is dangerous. You can’t
know how
it’s been used or how many miles it’s been driven. It
could fail suddenly and cause an accident. If you have to replace
a wheel use a new GM original equipment wheel.
6-47
Page 270 of 342
Downloaded from www.Manualslib.com manuals search engine Engine identification
Engine Description
Type
VIN Code
Fuel System
Produced By
Emissions
**Central
Port Fuel Injection
Wheel Nut Torque
DESCRIPTION
Base or Optional Wheel
4.3L
V6
W
CPI* *
us.
L.D.
Cooling System Capacity
ENGINE VIN CODE
4.3L W
TORQUE
100 ft. lbs. (140 Nom)
QUANTITY* Without Rear
Heater
13.5 Quarts
(12.8 Liters)
QUANTITY*
With Rear
Heater
16.5 Quarts
( 15.5 Liters)
*All quantities are approximate. After refill, the level MUST be checked.
Crankcase Capacity
ENGINE
4.3L
VIN CODE
w
QUANTITY*
With Filter
4.5 Quarts (4.3 Liters)
*All quantities are approximate. After refill, the level MUST be checked.
Do not overfill.
Fuel Tank Capacity
TYPE
Standard Tank
QUANTITY*
27 Gallons ( 102 Liters)
*All quantities are approximate.
6-62
Page 280 of 342

Downloaded from www.Manualslib.com manuals search engine I Schedule I Definition I
Follow Maintenance Schedule I if any one of these is true for your vehicle:
Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly
important when outside temperatures are below freezing.
Most trips include extensive idling (such as frequent driving in stop and
Most trips are through dusty areas.
go traffic).
You frequently tow a trailer or use a carrier on top of your vehicle.
Schedule
I should also be followed if the vehicle is used for delivery
service, police, taxi,
or other commercial application.
I Schedule I Intervals I
Every 3,000 Miles (5 000 km) or 3 Months
Engine Oil and Filter Change
Chassis Lubrication
Drive Axle Service
At 6,000 Miles (10 OOO km) - Then Every 12,000 Miles (25 OOO km)
Tire Rotation
Every 15,000 Miles (25 000 km)
Air Cleaner Filter Inspection, if driving in dusty conditions
Front Wheel Bearing Repack
(or at each brake relining, whichever occurs
first)
(2WD Only)
Every 30,000 Miles (50 000 km)
Air Cleaner Filter Replacement
Spark Plug Replacement
Fuel Filter Replacement
Cooling System Service (or every
24 months, whichever occurs first)
Every 50,000 Miles (83 000 km)
Automatic Transmission Service (severe conditions only)
7-4
Page 281 of 342

Downloaded from www.Manualslib.com manuals search engine Every 60,000 Miles (100 000 km)
Engine Accessory Drive Belt Inspection
Spark Plug Wire Inspection
Engine Timing Check
Fuel Tank. CaD and Lines Inspection
Schedule 11 Definition I
Follow Schedule I1 only if none of the conditions from Schedule I is true.
Sohedule I1 Intervals
Every
7,500 Miles (12 500 km)
Engine Oil and Filter Change (or every 12 months, whichever occurs first)
Chassis Lubrication (or every 12 months, whichever occurs first)
Drive Axle Service
At 7,500 Miles (12 500 km) - Then Every 15,000 Miles (25 000 km)
Tire Rotation
Every 30,000 Miles (50 000 km)
Cooling System Service (or every 24 months, whichever occurs first)
Spark Plug Replacement
Fuel Filter Replacement
Air Cleaner Filter Replacement
Front Wheel Bearing Repack (or at each brake relining, whichever occurs
first
(2WD Only)
Every 50,000 Miles (83 000 km)
Automatic Transmission Service (severe conditions)
Every 60,000 Miles (100 000 km)
Spark Plug Wire Inspection
Engine Accessory Drive Belt Inspection
Fuel Tank, Cap and Lines Inspection
7-5
Page 287 of 342

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule I
30,000 Miles (50 000 km)
0
0
0
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every
oil change (or every 6 months,
whichever occurs first).
Check redfront axle fluid
level and add fluid as needed. Check
constant velocity joints and
axle seals for leaking.**
Drain, flush and refill cooling system
(or every 24 months, whichever
occurs first). See “Engine Coolant’’
in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test
the cooling system and pressure cap. An Emission
Control Service.
For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Replace spark plugs.
An Emission Control Service.
Replace fuel filter. An Emission Control Service.
Replace air cleaner filter. Replace filter more often under dusty
conditions. An Emission Control Service.
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information.
I DATE I ACTUALMILEAGE I SERVICED BY: I
7-1 1
Page 293 of 342

Downloaded from www.Manualslib.com manuals search engine 60,000 Miles (100 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
0 Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every oil change (or every
6 months,
whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
bearings
(or at each brake relining, whichever occurs first),
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Inspect engine accessory drive belt. An Emission Control Service.
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant” in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test the cooling system and pressure cap.
An Emission
Control Service.
0 Replace spark plugs. An Emission Control Service.
0 Inspect spark plug wires. An Emission Control Service.
0 Replace fuel filter. An Emission Control Service.
Replace air cleaner filter. Replace filter more often under dusty
conditions.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap
gasket for any damage. Replace parts
as needed. An Emission Control
Service.
DATE SERVICED BY ACTUAL MILEAGE
7-17
Page 298 of 342

Downloaded from www.Manualslib.com manuals search engine I Maintenance Schedule I I ~~~ ~
87,000 Miles (145 000 km)
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs
at every oil change (or every 6 months,
whichever occurs first).
Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
DATE
SERVICED BY ACTUAL MILEAGE
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
0 Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every oil change
(or every 6 months,
whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
bearings (or at each brake relining, whichever occurs first).
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant”
in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test
the cooling system and pressure cap. An Emission
Control Service.
(Continued)
7-22