Page 5 of 372
Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the index.
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel
Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam
Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
F:Traction Control
M:Windshield Washer Fluid
Introduction v
Page 89 of 372

Power Outlets
The vehicle has two accessory
power outlets; one is located below
the climate control system and
the other is inside the center storage
console.
The accessory power outlets do not
work when the key is removed
from the ignition and the driver door
is opened, this helps to preserve
the battery life of the vehicle.
Certain power accessory plugs may
not be compatible to the accessory
power outlet and could result in
blown vehicle or adapter fuses.
If you experience a problem,
see your dealer/retailer for additional
information on the accessory
power plugs.Notice:Adding any electrical
equipment to the vehicle can
damage it or keep other
components from working as
they should. The repairs would
not be covered by the vehicle
warranty. Each outlet is rated to
a maximum output of 120W.
Usage of equipment exceeding
an amperage rating of 20A may
require fuse replacement. Check
with your dealer/retailer before
adding electrical equipment.
When adding electrical equipment,
be sure to follow the proper
installation instructions included
with the equipment.
Notice:Improper use of the
power outlet can cause damage
not covered by the warranty.
Do not hang any type of
accessory or accessory bracket
from the plug because the
power outlets are designed for
accessory power plugs only.
Warning Lights,
Gages, and Indicators
Warning lights come on when
there could be a problem with a
vehicle function. Some warning
lights come on briefly when
the engine is started to indicate
they are working.
Gages can indicate when there
could be a problem with a vehicle
function. Often gages and warning
lights work together to indicate
a problem with the vehicle.
When one of the warning lights
comes on and stays on while
driving, or when one of the gages
shows there may be a problem,
check the section that explains what
to do. Follow this manual’s advice.
Waiting to do repairs can be
costly and even dangerous.
Instruments and Controls 4-9
Page 233 of 372

Vehicle Care
General InformationGeneral Information...............9-2
California Proposition 65
Warning.............................9-2
California Perchlorate
Materials Requirements........9-3
Accessories and
Modifications.......................9-3
Vehicle ChecksDoing Your Own
Service Work......................9-4
Hood...................................9-5
Engine Compartment
Overview............................9-6
Engine Cover.......................9-9
Engine Oil..........................9-10
Engine Oil Life System.........9-13
Automatic Transmission
Fluid................................9-14
Manual Transmission Fluid. . . .9-15
Hydraulic Clutch..................9-15
Engine Air Cleaner/Filter.......9-16
Cooling System...................9-17
Engine Coolant...................9-19
Engine Overheating.............9-24
Power Steering Fluid............9-25Washer Fluid......................9-26
Brakes...............................9-27
Brake Fluid.........................9-28
Battery...............................9-29
Rear Axle...........................9-30
Starter Switch Check............9-31
Automatic Transmission
Shift Lock Control
System Check...................9-32
Ignition Transmission
Lock Check.......................9-32
Park Brake and P (Park)
Mechanism Check..............9-32
Wiper Blade Replacement......9-33Headlamp AimingHeadlamp Aiming................9-34
Bulb ReplacementBulb Replacement...............9-37
Halogen Bulbs....................9-37
High Intensity Discharge
(HID) Lighting....................9-37
Headlamps, Front Turn
Signal and Parking Lamps
(Base Vehicle)...................9-37
Headlamps, Front Turn
Signal and Parking Lamps
(Up-Level Vehicle)..............9-38
Daytime Running
Lamps (DRL)....................9-39
Fog Lamps.........................9-40Taillamps, Turn Signal, and
Stoplamps.........................9-40
License Plate Lamp.............9-40
Replacement Bulbs..............9-41
Electrical SystemElectrical System
Overload...........................9-41
Fuses and Circuit
Breakers...........................9-42
Engine Compartment
Fuse Block.......................9-42
Instrument Panel
Fuse Block.......................9-45
Rear Compartment
Fuse Block.......................9-46
Wheels and TiresTires..................................9-48
Winter Tires........................9-48
Tire Sidewall Labeling..........9-49
Tire Designations.................9-51
Tire Terminology and
Definitions.........................9-52
Tire Pressure......................9-54
Tire Pressure for
High-Speed Operation........9-56
Tire Pressure Monitor
System.............................9-56
Tire Pressure Monitor
Operation..........................9-57
Tire Inspection....................9-61
Vehicle Care 9-1
Page 273 of 372

3. Turn the bulb socket
counterclockwise and pull
the bulb straight out of the
lamp socket.
4. Install the new bulb.
5. Push the bulb straight into the
socket and turn clockwise to
reinstall.
6. Reinstall the license plate lamp
by lifting it through the facia
opening until the clip is in place.Replacement Bulbs
Exterior LampBulb
Number
Daytime Running
Lamp (Up-level
vehicles)P13W
Fog Lamp PS24W
Front Park and Turn
Signal Lamp3457NAK
Halogen Headlamp H13
License Plate Lamp W5W
Rear Turn Signal
and Taillamps3157K
For replacement bulbs not listed
here, contact your dealer/retailer.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load
is too heavy, the circuit breaker
opens and closes, protecting the
circuit until the current load returns
to normal or the problem is fixed.
This greatly reduces the chance of
circuit overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
the following in the vehicle:
•Headlamp Wiring
•Windshield Wiper Motor
•Power Windows and other Power
Accessories
Vehicle Care 9-41
Page 274 of 372

Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have
the headlamp wiring checked right
away if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice, may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using
the windshield wipers.
If the overload is caused by an
electrical problem and not snow
or ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle
are protected from short circuits by
a combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage
can be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses, circuit
breakers, and relays, seeEngine
Compartment Fuse Block on
page 9-42,Instrument Panel Fuse
Block on page 9-45, andRear
Compartment Fuse Block on
page 9-46.
Engine Compartment
Fuse Block
To remove the hinged fuse block
cover, press the clip at the front of
the cover, and swing it up.
Notice:Spilling liquid on any
electrical components on the
vehicle may damage it. Always
keep the covers on any electrical
component.
9-42 Vehicle Care
Page 275 of 372
J-CaseFuses Usage
6 Wiper
12 Starter
22 Brake
Vacuum PumpJ-Case
Fuses Usage
25 Power
Windows Rear
26 Power Windows
Front
27 Rear Defog
J-Case Fuses Usage
41 Cooling Fan High
42 Front Heater,
Ventilation and
Air Conditioning
43 Antilock Brake
System Pump
44 Cooling Fan Low
Mini Fuses Usage
1 Air Conditioning
Compressor Clutch
2 Transmission
Control Module
5 Engine Control
Module Main
7 Pre-Catalytic
Converter
Oxygen Sensor
8 Post-Catalytic
Converter
Oxygen Sensor
9 Fuel
Injectors – Even
10 Fuel Injectors – Odd
Engine Compartment Fuse Block
Vehicle Care 9-43
Page 276 of 372
Mini Fuses Usage
11 Cooling Fan Relay
14Manifold Air
Flow/Chassis
Control
15 Ignition
16 Run/Crank IP
17Sensing Diagnostic
Module/Ignition
18 Run/Crank Body
19Transmission
Control Module/
Ignition
20Engine Control
Module/Ignition
31Outside Rear
View Mirror
32Canister Vent
Solenoid
33Body Control
Module #6Mini Fuses Usage
34 Sunroof
35 Front Heated Seats
38 Washer Pump Front
40Antilock Brake
System Valves
46HID Headlamp –
Left Front
47HID Headlamp –
Right Front
50 Fog Lamps
51 Horn
52 Spare
55High Beam
Headlamp – Right
Front
56High Beam
Headlamp – Left
Front
61 Heated MirrorMini
RelaysUsage
K26 Powertrain
K50 Run / Crank
K55 Rear Defog
K612 Cooling Fan High
K614 Cooling Fan Control
Micro
RelaysUsage
K61 Starter
K69 Wiper Control
K613 Cooling Fan Low
K617Air Conditioning
Compressor Clutch
K619 Wiper Speed
K627High Intensity
Discharge
Headlamps
K632Brake
Vacuum Pump
9-44 Vehicle Care
Page 277 of 372
Instrument Panel Fuse
Block
The instrument panel fuse block is
located on the end of the instrument
panel, on the driver side of the
vehicle. To access the fuses, open
the fuse panel door by pulling out.
To reinstall the door, push the door
back into its original location.
FusesUsage
F1 Discrete Logic
Ignition Switch
F2 Diagnostic Link
Connector
F3 Airbag
F4 ClusterFuses Usage
F5 Heating Ventilation
Air Conditioning
Controller
F6 Body Control
Module
F8 Battery
F9 Spare
Instrument Panel Fuse Block
Vehicle Care 9-45