Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of Your
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Speci cations....................................5-5
California Fuel...............................................5-5
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-6
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.......................5-9
Checking Things Under the Hood.....................5-9
Hood Release..............................................5-10
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-21
Engine Coolant.............................................5-24
Coolant Surge Tank Pressure Cap..................5-26
Engine Overheating.......................................5-26
Overheated Engine Protection
Operating Mode........................................5-28
Cooling System............................................5-29
Power Steering Fluid.....................................5-33Windshield Washer Fluid................................5-34
Brakes........................................................5-35
Battery........................................................5-38
Jump Starting...............................................5-39
All-Wheel Drive..............................................5-43
Rear Axle.......................................................5-44
Front Axle......................................................5-44
Bulb Replacement..........................................5-45
Halogen Bulbs..............................................5-45
Headlamps..................................................5-46
Front Turn Signal and
Parking Lamps..........................................5-47
Daytime Running Lamps................................5-47
Roof Marker Lamps......................................5-48
Taillamps.....................................................5-50
Replacement Bulbs.......................................5-52
Windshield Wiper Blade Replacement..............5-53
Tires..............................................................5-54
Tire Sidewall Labelling...................................5-55
Tire Terminology and De nitions.....................5-58
In ation - Tire Pressure.................................5-60
Tire Inspection and Rotation...........................5-61
When It Is Time for New Tires.......................5-63
Buying New Tires.........................................5-63
Uniform Tire Quality Grading..........................5-64
Section 5 Service and Appearance Care
5-1
Front Turn Signal and
Parking Lamps
1. Open the hood as described earlier under
Hood Release on page 5-10and locate the
affected lamp.
2. Turn the bulb socket
counterclockwise and
remove it from the
lamp housing.
3. Pull the bulb from the bulb socket.
4. Put the new bulb into the bulb socket.
5. Put the bulb socket into the lamp housing and turn
it clockwise until it locks.
Daytime Running Lamps
1. Locate the lamp
assembly behind the
front bumper. It is
easiest to come in from
the side of the
vehicle through the
wheel opening.
5-47
2. Turn the bulb socket counterclockwise and remove
it from the lamp housing.
3. Remove the bulb from the bulb socket.
4. Put the new bulb into the bulb socket.
5. Place the hook end of the lamp in place on one
side and push the other end of the lamp down
until it locks in place.
Taillamps
A. Stoplamp
B. Turn Signal Lamp
C. Back-Up Lamp
1. Open the liftgate or tailgate.
5-50
1. Locate the affected
taillamp which is
behind and under
the bumper.
2. Turn the bulb socket counterclockwise and remove
it from the lamp housing.
3. Remove the bulb from the bulb socket.
4. Put the new bulb into the bulb socket.
5. Put the bulb socket into the lamp housing and turn
it clockwise to lock it.Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 3156
Daytime Running Lamp (DRL) 4114K
Front Turn Signal and
Parking Lamp4157K or 3157KX
Low-Beam and High-Beam
Headlamps9007
Rear Taillamp and Stoplamp 3057
Rear Taillamp in Bumper 3057
Rear Turn Signal Lamp 3156
Roof Marker Lamp 168
For replacement bulbs not listed here, please consult
your dealer.
5-52
Fuses Usage
DRIVER UNLOCKPower Door Lock
Relay (Driver’s Door
Unlock Function)
IGN 0Brake Transmission Shift
Interlock, Powertrain Control
Module, Transmission
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
LT TRNLeft Turn Signals and
Sidemarkers
VEH STOPVehicle Stoplamps, Brake
Module, Electronic Throttle
Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRNRight Turn Signals and
SidemarkersFuses Usage
BODY Harness Connector
DDM Driver Door Module
LOCKSRear Doors and Liftgate
Power Lock Relay Feed
ECC Liftgate
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Rear Power Window
Circuit Breaker and Driver
Door Module
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
Circuit Breaker Usage
AUX PWR 2 Midgate Controller (SUT Only)
5-105
Fuses Usage
AUX PWRInstrument Panel Outlets,
Rear Cargo Area Power
Outlets, Console
IGN 1 PCM Ignition
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
INJ 1Ignition Coil, Fuel
Injectors-Bank 1
INJ 2Ignition Coil, Fuel
Injectors-Bank 2
IGN EInstrument Panel Cluster, Air
Conditioning Relay, Turn
Signal/Hazard Switch, Starter
Relay, Electronic Brake
Controller TC2 Mode Switch
RTDElectronic Brake Controller
Battery Feed
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel Pump
F/PMP Fuel Pump (Relay)Fuses Usage
02A Oxygen Sensors
B/U LPBack-up Lamps, Automatic
Transmission Shift Lock
Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
O2B Oxygen Sensors
AIRBAGSupplemental In atable
Restraint System
FRT PARKFront Parking Lamps,
Sidemarker Lamps
DRLDaytime Running
Lamps (Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HID Not Used
DRL Daytime Running Lamps
RVC Regulated Voltage Control
5-110
Audio System(s) (cont.)
Navigation/Radio System..............................3-87
Radio with Cassette and CD.........................3-61
Radio with Six-Disc CD................................3-74
Rear Seat Audio (RSA)................................3-87
Setting the Time..........................................3-61
Theft-Deterrent Feature................................3-89
Understanding Radio Reception.....................3-90
Automatic Headlamp System............................3-15
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-28
B
Battery..........................................................5-38
Run-Down Protection...................................3-17
Before Leaving on a Long Trip.........................4-45
Bench Seat, Split (60/40)................................... 1-7
Brake
Anti-Lock Brake System (ABS)........................ 4-7
Emergencies................................................ 4-8
Parking......................................................2-36
System Warning Light..................................3-32
Brakes..........................................................5-35
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-25Bulb Replacement...........................................5-45
Daytime Running Lamps...............................5-47
Front Turn Signal and Parking Lamps.............5-47
Halogen Bulbs............................................5-45
Headlamps.................................................5-46
Replacement Bulbs......................................5-52
Roof Marker Lamps.....................................5-48
Taillamps....................................................5-50
Buying New Tires...........................................5-63
C
California Fuel.................................................. 5-5
Canadian Owners................................................ ii
Capacities and Speci cations..........................5-112
Carbon Monoxide . . . 2-13, 2-14, 2-16, 2-39, 4-48, 4-68
Care of
Safety Belts................................................5-95
Your Cassette Tape Player............................3-91
Your CD Player...........................................3-92
Your CDs ...................................................3-92
Cargo Area, All-Weather..................................2-59
Cargo Tie Downs............................................2-59
Center Console Storage Area...........................2-55
Center Overhead Console................................2-54
Chains, Tire...................................................5-67
Charging System Light....................................3-31
2
G
Gage
Engine Coolant Temperature.........................3-35
Fuel..........................................................3-42
Oil Pressure...............................................3-40
Speedometer..............................................3-28
Tachometer.................................................3-28
Transmission Temperature.............................3-35
Voltmeter Gage...........................................3-32
Garage Door Opener.......................................2-50
Gasoline
Octane........................................................ 5-5
Speci cations............................................... 5-5
Glove Box.....................................................2-54
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamps....................................................5-46
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-45
Daytime Running Lamps.......................3-14, 5-47
Flash-to-Pass............................................... 3-8
Front Turn Signal and Parking Lamps.............5-47Headlamps (cont.)
Halogen Bulbs............................................5-45
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Roof Marker Lamps.....................................5-48
Heated Seats................................................... 1-4
Heater...........................................................3-19
Highbeam On Light.........................................3-41
Highway Hypnosis...........................................4-46
Hill and Mountain Roads..................................4-46
HomeLink
®Transmitter....................................2-50
HomeLink®Transmitter, Programming................2-51
Hood
Checking Things Under.................................. 5-9
Release.....................................................5-10
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-22
I
Ignition Positions.............................................2-25
Infants and Young Children, Restraints...............1-39
In ation -- Tire Pressure..................................5-60
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-27
Overview..................................................... 3-4
6