
When you reinstall the regular wheel and tire, you must
also reinstall the center cap. Place the cap on the wheel
and tap it into place until it seats ¯ush with the wheel. The
cap only goes on one way. Be sure to line up the tab on
the center cap with the indentation on the wheel.
Storing a Flat or Spare Tire, Jack
and Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
Notice:An aluminum wheel with a ¯at tire should
always be stored under the vehicle with the
hoist. However, storing it that way for an extended
period of time could damage the wheel. To avoid
this, always stow the wheel properly with the valve
stem pointing down and have the wheel repaired
as soon as possible.Return the bottle jack, wheel blocks, wheel wrench and
jack extensions to their location behind the passenger's
seat.
A. Wing Nut
B. Wheel Blocks
C. Retaining Bracket
and Wingnut
D. Gloves
E. Wheel Wrench and
ExtensionsF. Storage Bag
Mounting Bracket
G. Bottle Jack
H. Retaining Hook
5-93

Fuses Usage
RR Wiper Not Used
SEO ACCYSpecial Equipment Option
Accessory
WS WPR Windshield Wipers
TBC ACCYTruck Body Controller
Accessory
IGN 3 Ignition, Heated Seats
4WDFour-Wheel Drive System,
Auxiliary Battery
Fuses Usage
HTR A/C Climate Control System
LOCK (Relay)Power Door Lock Relay
(Lock Function)
HVAC 1 Climate Control System
L DOORDriver's Door Harness
Connection
CRUISECruise Control, Power Take
Off (PTO)
UNLOCK (Relay)Power Door Lock Relay
(Unlock Function)
RR FOG LP Not Used
BRAKE Anti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay
(Driver's Door Unlock
Function)
IGN 0 TCM
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
5-111

*1Ð Gasoline Engine and Diesel Engine.
*2Ð Gasoline Engine; ECMRPV Ð Diesel Engine.
*3Ð Gasoline Engine; FUEL HT Ð Diesel Engine.
*4Ð Gasoline Engine; ECM I Ð Diesel Engine.
*5Ð IGN/EDU
Fuses Usage
GLOW PLUGDiesel Glow Plugs and Intake
Air Heater
CUST FEED Gasoline Accessory Power
STUD #1Auxiliary Power (Single
Battery and Diesels Only)/
Dual Battery (TP2) Do not
install fuse.
MBECMid Bussed Electrical Center
Power Feed, Front Seats,
Right Doors
BLOWER Front Climate Control Fan
LBECLeft Bussed Electrical Center,
Door Modules, Door Locks,
Auxiliary Power OutletÐRear
Cargo Area and Instrument
Panel
Fuses Usage
STUD 2Accessory Power/Trailer
Wiring Brake Feed
ABS Anti-Lock Brakes
VSES/ECAS Vehicle Stability
IGN A Ignition Power
IGN B Ignition Power
LBEC 1Left Bussed Electrical Center,
Left Doors, Truck Body
Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARKRight Rear Parking and
Sidemarker Lamps
LR PARKLeft Rear Parking and
Sidemarker Lamps
PARK LP Parking Lamps Relay
STARTER Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller Battery
Feed
SUNROOF Sunroof
5-115

Fuses Usage
A/C COMP Air Conditioning Compressor
A/C COMPAir Conditioning Compressor
Relay
RR WPR Not Used
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
Rear Heated Seats,
HomeLink
LO HDLP-LT Headlamp Low Beam-Left
BTSIBrake Transmission Shift
Interlock System
CRANK Starting System
LO HDLP-RT Headlamp Low Beam-Right
FOG LP Fog Lamp RelayFuses Usage
FOG LP Fog Lamps
HORN Horn Relay
W/S WASHWindshield Washer Pump
Relay
W/S WASH Windshield Washer Pump
INFOOnStar/Rear Seat
Entertainment
RADIO AMP Radio Ampli®er
RH HID Not Used
HORN Horn
EAP Not Used
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
5-117

Usage Fluid/Lubricant
Front Axle
Propshaft
Spline or
One-Piece
Propshaft
Spline
(Two-Wheel
Drive with Auto.
Trans.)Spline Lubricant, Special Lubricant
(GM Part No. U.S. 12345879, in
Canada 10953511) or lubricant
meeting requirements of GM
9985830.
Rear Driveline
Center SplineChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).Usage Fluid/Lubricant
Body Door
Hinge Pins,
Tailgate Hinge
and Linkage,
Folding Seats
and Fuel Door
HingeMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Tailgate Handle
Pivot Points,
Hinges, Latch
Bolt and
LinkageMulti-Purpose Lubricant, Superlube
(GM Part No. U.S 12346241, in
Canada 10953474, or equivalent).
Weatherstrip
ConditioningDielectric Silicone Grease (GM Part
No. U.S. 12345579, in Canada
10953014, or equivalent).
Weatherstrip
SqueaksSynthetic Grease with Te¯on,
Superlube (GM Part No. U.S.
12371287, in Canada 10953437, or
equivalent).
6-21

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-7
Headlamp High/Low Beam Changer.................... 3-9
Headlamps....................................................5-59
Bulb Replacement.......................................5-59
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-61
Halogen Bulbs............................................5-59
Pickup Box Identi®cation and Fender Marker
Lamps....................................................5-65
Roof Marker Lamps.....................................5-62
Headphones.................................................3-116
Heated Seats................................................... 1-5
Heating.........................................................3-30
Heavy-DutyTrailer Wiring Harness Package........4-90
Highway Hypnosis...........................................4-45
Hill and Mountain Roads..................................4-46
Hitches..........................................................4-85
Hood.............................................................. 5-8
Checking Things Under.................................. 5-8
Release....................................................... 5-9
Horn............................................................... 3-7
How to Add Coolant to the Coolant Surge Tank
Gasoline Engines........................................5-38
How to Add Fluid............................5-25, 5-28, 5-29
How to Check and Add Fluid............................5-30
How to Check Lubricant...................................5-55How to Check Power Steering Fluid..................5-43
How to Check........................5-23, 5-26, 5-28, 5-70
How to Inspect...............................................5-21
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-15
Hydraulic Clutch System Check........................6-14
Hydraulic Clutch.............................................5-29
Hydroplaning..................................................4-41
I
If No Steam Is Coming From Your Engine..........5-35
If Steam Is Coming From Your Engine...............5-34
If the Light is Flashing.....................................3-50
If the Light Is On Steady.................................3-50
If You Are Stuck in Sand, Mud, Ice or Snow.......4-52
If You Do Decide To Pull A Trailer.....................4-68
If You're Caught in a Blizzard...........................4-50
Ignition Positions.............................................2-20
Ignition Transmission Lock Check......................6-15
Infants and Young Children, Restraints...............1-34
In¯ation -- Tire Pressure..................................5-69
Inspection......................................................6-18
Brake System.............................................6-18
Engine Cooling System................................6-17
Exhaust System..........................................6-17
Fuel System...............................................6-17
Part C - Periodic Maintenance.......................6-17
8

Maintenance Schedule (cont.)
Transfer Case and Front Axle (All-Wheel
Drive) Inspection......................................6-18
Transfer Case and Front Axle (Four-Wheel
Drive) Inspection......................................6-18
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-89
Making Turns.................................................4-86
Malfunction Indicator Light................................3-49
Manual Seats................................................... 1-3
Manual Selectable Ride...................................4-12
Manual Transfer Case.....................................2-34
Manual Transmission Check.............................6-13
Manual Transmission.......................................2-22
Fluid..........................................................5-28
Operation...................................................2-29
Manual Windows............................................2-15
Matching Transmitter(s) to Your Vehicle............... 2-5
Memory Seat.................................................2-66
Message.......................................................3-65
DIC Warnings and Messages........................3-65
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) ± Customer Assistance....................... 7-4
Mirrors..........................................................2-56
Automatic Dimming Rearview with Compass
and Temperature Display...........................2-56
Automatic Dimming Rearview with OnStar
ž,
Compass and Temperature Display.............2-53Mirrors (cont.)
Manual Rearview Mirror................................2-53
Outside Automatic Dimming Mirror.................2-61
Outside Camper-Type Mirrors........................2-59
Outside Convex Mirror.................................2-62
Outside Curb View Assist Mirrors...................2-61
Outside Heated Mirrors................................2-62
Outside Manual Mirrors................................2-59
Outside Power Camper-Type.........................2-60
Outside Power Foldaway Mirrors....................2-61
Outside Power Mirrors..................................2-60
Outside West Coast-Type Mirrors...................2-59
Model Reference................................................ vi
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-20
Noise Control System, Tampering......................5-58
Normal Maintenance Replacement Parts...........5-121
O
Odometer......................................................3-35
Off-Road Recovery..........................................4-19
OIL LIFE RESET............................................3-67
OIL PRESSURE LOW.....................................3-67
11

Safety Belts (cont.)
Rear Seat Passengers.................................1-26
Right Front Passenger Position......................1-24
Safety Belt Extender....................................1-31
Safety Belt Use During Pregnancy.................1-23
Safety Belts Are for Everyone.......................1-10
Safety Chains.................................................4-85
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-27
Scheduled Maintenance..................................... 6-5
Seatback Latches............................................. 1-7
Seat............................................................... 1-7
Head Restraints............................................ 1-7
Seats.............................................................. 1-5
Heated Seats............................................... 1-5
Manual........................................................ 1-3
Memory.....................................................2-66
Power Lumbar.............................................. 1-4
Power Seats................................................. 1-4
Rear Seat Operation...............................1-8, 1-9
Reclining Seatbacks...................................... 1-5
Seatback Latches.......................................... 1-7
Secondary Latch System.................................5-96
Securing a Child Restraint................................1-55
Center Front Seat Position............................1-55
Center Rear Seat Position............................1-52
Designed for the LATCH System...................1-49
Rear Outside Seat Position...........................1-50
Right Front Seat Position......................1-55, 1-58Select Button.................................................3-64
SERVICE 4 WHEEL STEER.............................3-69
SERVICE 4WD...............................................3-69
SERVICE AIRBAG..........................................3-68
SERVICE BRAKE BOOSTER...........................3-68
SERVICE BRAKE SYSTEM.............................3-68
Service Bulletins.............................................7-10
Service Manuals............................................... 7-9
SERVICE RIDE CONTROL..............................3-69
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-49
Publications Ordering Information..................... 7-9
Setting Preset PTYs (RDS Only).....3-79, 3-89, 3-102
Setting Preset Stations..........3-73, 3-77, 3-87, 3-100
Setting the Time.............................................3-72
Radios with Radio Data Systems (RDS).........3-72
Radios without Radio Data Systems (RDS).....3-72
Setting the Tone
(Bass/Treble)....................3-73, 3-77, 3-87, 3-100
Sheet Metal Damage.....................................5-105
Shift Speeds..................................................2-32
Shifting Into Park (P).......................................2-46
Shifting Out of Park (P)...................................2-49
Single Stage Air Bags.....................................1-69
Single Stage vs. Dual Stage Air Bags................1-68
15