Tire Terminology and Definitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the tire.
Air pressure is expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio
:The relationship of a tire's height to
its width.
Belt
:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead
:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread. Cold Tire Pressure
:The amount of air pressure
in a tire, measured in pounds per square inch (psi)
or kilopascals (kPa) before a tire has built up heat
from driving. See Inflation - Tire Pressure
on
page 6‑72
.
Curb Weight
:The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant, but
without passengers and cargo.
DOT Markings
:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN), an
alphanumeric designator which can also identify
the tire manufacturer, production plant, brand, and
date of production.
GVWR
:Gross Vehicle Weight Rating.
See Loading the Vehicle
on page 5‑31.
GAWR FRT
:Gross Axle Weight Rating for the
front axle. See Loading the Vehicle
on page 5‑31.
GAWR RR
:Gross Axle Weight Rating for the rear
axle. See Loading the Vehicle
on page 5‑31.
6-69
When the Change Engine Oil Soon message displays,
certain services, checks, and inspections are required.
The services described for MaintenanceIshould be
performed at every engine oil change. The services
described for Maintenance IIshould be
performed when:
.Maintenance Iwas performed the last time the
engine oil was changed.
.It has been 10 months or more since the Change
Engine Oil Soon message has displayed or since
the last service.
Maintenance I
.Change engine oil and filter. See Engine Oilon
page 6‑18. An Emission Control Service.
.Engine coolant level check. See Engine Coolanton page 6‑32.
.Windshield washer fluid level check.
SeeWindshield Washer Fluid on page 6‑41.
.Tire inflation check. See Inflation - Tire Pressureon page 6‑72.
.Tire wear inspection. See Tire Inspection and
Rotation on page 6‑78.
.Rotate tires. See Tire Inspection and Rotationon
page 6‑78.
.Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system must
be repaired and the fluid level checked.
.Engine air cleaner filter inspection (vehicles driven
in dusty conditions only). See Engine Air Cleaner/
Filter on page 6‑22.
.Brake system inspection (or every 12 months,
whichever occurs first).
Maintenance II
.Perform all services described in Maintenance I.
.Steering and suspension inspection. Visual
inspection for damaged, loose, or missing parts
or signs of wear.
.Lubricate the front suspension, steering linkage,
and parking brake cable guides. Control arm
ball joints on 2500 series vehicles require
lubrication but should not be lubricated unless
their temperature is−12°C (10°F) or higher, or
they could be damaged. Control arm ball joints
on 1500 series vehicles are maintenance‐free.
.Engine cooling system inspection. Visual
inspection of hoses, pipes, fittings, and clamps
and replacement, if needed.
7-4
.Windshield wiper blade inspection for wear,
cracking, or contamination and windshield
and wiper blade cleaning, if contaminated. See
Windshield, Backglass, and Wiper Blades
on
page 6‑114. Worn or damaged wiper blade
replacement. See Windshield Wiper Blade
Replacement on page 6‑61.
.Body hinges and latches, key lock cylinders,
folding seat hardware, and liftgate hinges,
linkage, and handle pivot points lubrication.
See Recommended Fluids and Lubricants
on
page 7‑11. More frequent lubrication may be
required when vehicle is exposed to a corrosive
environment. Applying silicone grease on
weatherstrips with a clean cloth makes them
last longer, seal better, and not stick or squeak.
.Restraint system component check. See Checking
the Restraint Systems on page 2‑101.
.Automatic transmission fluid level check
and adding fluid, if needed. See Automatic
Transmission Fluid (4-Speed Transmission)
on
page 6‑24or Automatic Transmission Fluid
(6-Speed Transmission) on page 6‑27.
.Four‐wheel drive vehicles: Transfer case fluid level
check and adding fluid, if needed.
.Engine air cleaner filter inspection. See Engine Air
Cleaner/Filter on page 6‑22.
Additional Required Services
At Each Fuel Stop
.Engine oil level check. See Engine Oilon
page 6‑18.
.Engine coolant level check. See Engine Coolanton page 6‑32.
.Windshield washer fluid level check.
SeeWindshield Washer Fluid on page 6‑41.
Once a Month
.Tire inflation check. See Inflation - Tire Pressureon page 6‑72.
.Tire wear inspection. See Tire Inspection and
Rotation on page 6‑78.
Once a Year
.Starter switch check. See Owner Checks and
Services on page 7‑9.
.Parking brake and automatic transmission P (Park)
mechanism check. See Owner Checks and
Services on page 7‑9.
7-5
.Evaporative control system inspection. Check all
fuel and vapor lines and hoses for proper hook‐up,
routing, and condition. Check that the purge valve,
if the vehicle has one, works properly. Replace as
needed.An Emission Control Service. The U.S.
Environmental Protection Agency or the California
Air Resources Board has determined that the
failure to perform this maintenance item will not
nullify the emission warranty or limit recall liability
prior to the completion of the vehicle's useful
life. We, however, urge that all recommended
maintenance services be performed at the
indicated intervals and the maintenance be
recorded.
First Engine Oil Change After Every
160 000 km/100,000 Miles
.Automatic transmission fluid change (normal
service). See Automatic Transmission Fluid
(4-Speed Transmission)
on page 6‑24or
Automatic Transmission Fluid (6-Speed
Transmission) on page 6‑27.
.Four‐wheel drive only: Transfer case fluid change
(normal service). Check vent hose at transfer
case for kinks and proper installation. Check to
be sure vent hose is unobstructed, clear, and free
of debris. During any maintenance, if a power
washer is used to clean mud and dirt from the
underbody, care should be taken to not directly
spray the transfer case output seals. High pressure
water can overcome the seals and contaminate
the transfer case fluid. Contaminated fluid will
decrease the life of the transfer case and should
be replaced.
.Spark plug replacement and spark plug wires
inspection. An Emission Control Service.
First Engine Oil Change After Every
240 000 km/150,000 Miles
.Engine cooling system drain, flush, and refill,
cooling system and cap pressure check, and
cleaning of outside of radiator and air conditioning
condenser (or every 5 years, whichever occurs
first). SeeEngine Coolant
on page 6‑32.
An Emission Control Service.
.Engine accessory drive belt inspection for fraying,
excessive cracks, or obvious damage and
replacement, if needed. An Emission Control
Service.
7-7
Scheduled Maintenance
ServiceMaintenanceIMaintenance II
Change engine oil and filter. Reset oil life system. • •
Engine coolant level check. ••
Windshield washer fluid level check. ••
Tire inflation pressures check. ••
Tire wear inspection. ••
Rotate tires. ••
Fluids visual leak check. ••
Engine air cleaner filter inspection (vehicles driven in dusty conditions only). ••
Brake system inspection. ••
Steering and suspension inspection. •
Chassis components lubrication. •
Engine cooling system inspection. •
Windshield wiper blades inspection. •
Body components lubrication. •
Restraint system components check. •
Automatic transmission fluid level check. •
Four‐wheel drive only: Transfer case fluid level check. •
Engine air cleaner filter inspection (vehicles not driven in dusty conditions). •
7-8
Recommended Fluids and
Lubricants
Fluids and lubricants identified below by name, part
number, or specification can be obtained from your
dealer.Usage Fluid/Lubricant
Engine Oil Engine oil which meets GM Standard
GM6094M and displays the American
Petroleum Institute Certified for
Gasoline Engines starburst symbol.
To determine the proper viscosity for
your vehicle's engine, see
Engine Oil
on page 6‑18.
Engine Coolant 50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. See
Engine Coolanton
page 6‑32.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid
(GM Part No. U.S. 12377967,
in Canada 89021320).
Usage Fluid/Lubricant
Windshield
Washer Optikleen®Washer Solvent.
Power Steering System GM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
Automatic
Transmission DEXRON
®-VI Automatic Transmission
Fluid.
Key Lock
Cylinders Multi-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Chassis
Lubrication Chassis Lubricant (GM Part No.
U.S. 12377985, in Canada 88901242)
or lubricant meeting requirements of
NLGI #2, Category LB or GC-LB.
Front Axle
(1500 Series
Vehicles with Four-Wheel Drive) SAE 80W-90 Axle Lubricant
(GM Part No. U.S. 89021671,
in Canada 89021672).
7-11
Cleaning (cont.)Underbody Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6-116
Washing Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-112
Weatherstrips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-111
Windshield, Backglass, and Wiper Blades . . . . . . . 6-114
Climate Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18 Outlet Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Rear Air Conditioning and Heating System . . . . . . . 4-27
Rear Air Conditioning and Heating System,Electronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Climate Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Clock, Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81
Collision Damage Repair . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
Content Theft-Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
Engine Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 4-38
Cooled Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . 8-10
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45 Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-75
Customer Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Text Telephone (TTY) Users . . . . . . . . . . . . . . . . . . . . . . . 8-6
Customer Information Service Publications Ordering Information . . . . . . . . 8-16
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . .8-2
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Data Recorders, Event . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 4-11
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
DIC Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
Disc, MP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-99, 4-106
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . . . . . .6-5
Dome Lamp Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Door
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Programmable Automatic Door Locks . . . . . . . . . . . . 3-11
Rear Door Security Locks . . . . . . . . . . . . . . . . . . . . . . . . 3-12
i - 4
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . 4-47DIC Operation and Displays . . . . . . . . . . . . . . . . 4-48, 4-55
DIC Vehicle Customization . . . . . . . . . . . . . . . . . . . . . . . 4-72
DIC Warnings and Messages . . . . . . . . . . . . . . . . . . . . . 4-61
Driving At Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Before a Long Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Highway Hypnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
In Rain and on Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Recovery Hooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
Rocking Your Vehicle to Get it Out . . . . . . . . . . . . . . . . 5-30
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-29
Dual Automatic Climate Control System . . . . . . . . . . . 4-20
DVD Rear Seat Entertainment System . . . . . . . . . . . . . . . .4-125E
E85 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
EDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 6-118
Electrical SystemCenter Instrument Panel Fuse Block . . . . . . . . . . . . .6-121
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . 6-118
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . 6-119
Power Windows and Other Power Options . . . . . . 6-118
Underhood Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . .6-122
Windshield Wiper Fuses . . . . . . . . . . . . . . . . . . . . . . . . . 6-118
Electronic Immobilizer PASS-Key
®III+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Electronic Immobilizer Operation PASS-Key
®III+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Check and Service Engine Soon Light . . . . . . . . . . . . 4-39
Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 4-38
i - 5