Fuses Usage
HTR A/C Climate Control System
LOCKPower Door Lock Relay
(Lock Function)
HVAC 1Inside Rearview Mirror,
Climate Control System
L DOORDriver’s Door Harness
Connection
CRUISE Cruise Control
UNLOCKPower Door Lock Relay
(Unlock Function)
RR FOG LP Rear Fog Lamp (Export Only)
BRAKE Anti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay
(Driver’s Door Unlock
Function)
IGN 0 PCM, TCM
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop TrailerFuses Usage
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
Sidemarkers
BODY Harness Connector
DDM Driver Door Module
AUX PWR 2Rear Cargo Area Power
Outlets
LOCKS Power Door Lock System
ECCRear Electronic Climate
Control, Liftgate
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Power Window Circuit
Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
5-109
Center Instrument Panel Fuse Block
The center instrument panel utility block is located
underneath the instrument panel, to the left of the
steering column.
Device Usage
SEO Special Equipment Option
TRAILER Trailer Brake Wiring
UPFIT Up tter (Not Used)
SL RIDERide Control Harness
Connection
HDLR 2 Headliner Wiring Connector
BODY Body Wiring Connector
DEFOG Rear Defogger Relay
HDLNR 1 Headliner Wiring Connector 1
SPARE RELAY Not Used
CB SEATDriver and Passenger Seat
Module Circuit Breaker
CB RT DOORRight Power Window Circuit
Breaker
SPARE Not Used
INFOInfotainment Harness
Connection
5-110
*1— Gasoline Engine and Fuel Injection Rail #2.
*2— Gasoline Engine and Fuel Injection Rail #1.
*3— Gasoline Engine; Oxygen Sensors.
*4— Gasoline Engine; Oxygen Sensors.
*5— PCM Ignition
Fuses Usage
GLOW PLUG Not Used
CUST FEED Gasoline Accessory Power
HYBRID Hybrid
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
Outlet — Rear Cargo Area
and Instrument Panel
STUD 2Accessory Power/Trailer
Wiring Brake Feed
ABS Anti-Lock Brakes
Fuses Usage
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
STRTR Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller Battery
Feed
S/ROOF Sunroof
SEO B2 Off-Road Lamps
4WSVent Solenoid
Canister/Quadrasteer Module
Power
RR HVAC Rear Climate Control
AUX PWRAuxiliary Power
Outlet — Console
5-113
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts,
signs of wear, or lack of lubrication. Inspect power
steering lines and hoses for proper hook-up, binding,
leaks, cracks, cha ng, etc. Visually check constant
velocity joints, rubber boots, and axle seals for leaks.
(c)Visually inspect hoses and have them replaced if they
are cracked, swollen, or deteriorated. Inspect all pipes,
ttings, and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or cracking.
Replace wiper blades that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors, and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its job,
have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken airbag
coverings, and have them repaired or replaced. The
airbag system does not need regular maintenance.(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo
door hinge, locks, and folding seat hardware. More
frequent lubrication may be required when exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better, and not stick or squeak.
(g)Check vent hose at transfer case for kinks and
proper installation.
(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(i)Drain, ush, and re ll cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-26 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
6-8
Cleaning (cont.)
Washing Your Vehicle.................................5-101
Weatherstrips............................................5-101
Windshield, Backglass, and Wiper Blades......5-102
Climate Control System...................................3-21
Dual..........................................................3-22
Dual Automatic............................................3-25
Outlet Adjustment........................................3-30
Rear Air Conditioning and Heating System......3-31
Rear Air Conditioning and Heating System,
Electronic................................................3-34
Rear Air Conditioning System........................3-30
Comfort Guides, Rear Safety Belt.....................1-41
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-58
Coolant
Engine Temperature Gage............................3-46
Heater, Engine............................................2-23
Surge Tank Pressure Cap.............................5-28
Cooling System..............................................5-30
Cruise Control................................................3-11
Cruise Control Light........................................3-53
Cupholder(s)..................................................2-56
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2Customer Assistance Information (cont.)
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Delayed Locking.............................................2-10
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-19
Dome Lamps.................................................3-18
Door
Delayed Locking..........................................2-10
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-13
Driver
Position, Safety Belt.....................................1-29
Driver Information Center (DIC).........................3-56
DIC Operation and Displays..........................3-57
DIC Vehicle Customization............................3-72
4
Flat Tire, Storing.............................................5-92
Fluid
Automatic Transmission................................5-23
Power Steering...........................................5-36
Windshield Washer......................................5-37
Fog Lamps....................................................3-17
Four-Wheel Drive....................................2-28, 5-49
Four-Wheel-Drive Light....................................3-53
Front Axle......................................................5-50
Front Reading Lamps......................................3-19
Front Storage Area.........................................2-56
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-5
E-85 (85% Ethanol)....................................... 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-8
Gage.........................................................3-54
Gasoline Octane........................................... 5-5
Gasoline Speci cations.................................. 5-5
Low Warning Light.......................................3-55
Fuses
Center Instrument Panel Fuse Block.............5-110
Fuses and Circuit Breakers.........................5-107
Instrument Panel Fuse Block.......................5-108
Underhood Fuse Block...............................5-111
Windshield Wiper.......................................5-107G
Gage
Engine Coolant Temperature.........................3-46
Fuel..........................................................3-54
Oil Pressure...............................................3-52
Speedometer..............................................3-38
Tachometer.................................................3-38
Transmission Temperature.............................3-46
Voltmeter Gage...........................................3-42
Garage Door Opener.......................................2-52
Gasoline
Octane........................................................ 5-5
Speci cations............................................... 5-5
Glove Box.....................................................2-56
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamps............................................3-14, 5-52
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-52
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-9
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-53
Halogen Bulbs............................................5-52
High/Low Beam Changer................................ 3-8
6
Level Control..................................................4-65
Liftgate..........................................................2-14
Light
Airbag Readiness........................................3-39
Anti-Lock Brake System Warning...................3-45
Battery Warning..........................................3-42
Brake System Warning.................................3-43
Cruise Control.............................................3-53
Four-Wheel-Drive.........................................3-53
Highbeam On.............................................3-53
Low Fuel Warning.......................................3-55
Malfunction Indicator....................................3-48
Passenger Airbag Status Indicator..................3-40
Safety Belt Reminder...................................3-39
Security.....................................................3-53
Tire Pressure..............................................3-48
Tow/Haul Mode...........................................3-54
Traction Off................................................3-45
Lighting
Entry.........................................................3-19
Exit...........................................................3-19
Loading Your Vehicle.......................................4-52
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-13
Locks
Delayed Locking..........................................2-10
Door........................................................... 2-8
Lockout Protection.......................................2-13
Power Door.................................................. 2-9Locks (cont.)
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-13
Loss of Control...............................................4-21
Low Fuel Warning Light...................................3-55
Luggage Carrier..............................................2-57
Lumbar
Power Controls............................................. 1-5
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month................................6-10
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-16
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-15
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-48
Manual Seats................................................... 1-3
Manual Windows............................................2-15
8
P
Park (P)
Shifting Into................................................2-36
Shifting Out of............................................2-38
Parking
Brake........................................................2-35
Over Things That Burn.................................2-38
Passenger Airbag Status Indicator.....................3-40
Passenger Sensing System..............................1-78
Passing.........................................................4-19
Passlock
®......................................................2-19
Power
Accessory Outlets........................................3-20
Door Locks.................................................. 2-9
Electrical System.......................................5-107
Lumbar Controls........................................... 1-5
Retained Accessory (RAP)............................2-21
Seat............................................................ 1-4
Steering Fluid.............................................5-36
Windows....................................................2-16
Programmable Automatic Door Locks.................2-11
Q
QUADRASTEER™..........................................4-16
Questions and Answers About Safety Belts.........1-28
R
Radios..........................................................3-78
AM-FM Radio.............................................3-79
Care of Your Cassette Tape Player...............3-136
Care of Your CD and DVD Player................3-137
Care of Your CDs and DVDs.......................3-137
Navigation/Radio System, see Navigation
Manual.................................................3-121
Radio with Cassette and CD.........................3-93
Radio with CD............................................3-82
Radio with Six-Disc CD..............................3-108
Rear Seat Audio........................................3-133
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-79
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-78
Theft-Deterrent..........................................3-134
Understanding Reception............................3-136
Rear Air Conditioning and Heating System.........3-31
Rear Air Conditioning and Heating System and
Electronic Climate Controls...........................3-34
Rear Air Conditioning System...........................3-30
Rear Axle......................................................5-48
Locking......................................................4-10
Rear Door Security Locks................................2-13
Rear Safety Belt Comfort Guides......................1-41
Rear Seat Audio (RSA)..................................3-133
10