*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— Ignition 1
*6— Powertrain Control Module, Fuel Pump.
*7— Rear Climate Control.
*8— Sunroof.
Fuses Usage
GLOW PLUG Not Used
CUST FEED Accessory Power
HYBRID Not Used
STUD #1 Auxiliary Power
MBECMid-Bussed Electrical Center
Power Feed, Front Seats,
Right Doors
BLWR Front Climate Control Fan
Fuses Usage
LBECLeft Bussed Electrical Center,
Door Modules, Door Locks,
Auxiliary Power Outlet—Rear
Cargo Area and Instrument
Panel
STUD #2*Accessory Power/Trailer
Wiring Brake Feed
ABS Anti-lock Brakes
VSES/ECASAutomatic Level Control
(ALC) Compressor
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
5-115
Fuses Usage
PARK LP Parking Lamps Relay
STRTR Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller
Battery Feed
SEO B2 Off-Road Lamps
4WS Not Used
AUX PWRAccessory Power
Outlet — Console
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
IGN EInstrument Panel Cluster,
Air Conditioning Relay,
Turn Signal/Hazard Switch,
Starter Relay
RTDElectronic Suspension
Control, Automatic Level
Control (ALC) Exhaust
TRL B/U Backup Lamps Trailer WiringFuses Usage
F/PMP Fuel Pump (Relay)
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
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-LTDriver’s Side High Beam
Headlamp
LH HIDLeft Hand High Intensity
Discharge Lamps
DRL Daytime Running Lamps
5-116
Fuses Usage
RVC Regulated Voltage Control
IPC/DICInstrument Panel
Cluster/Driver Information
Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RTPassenger’s Side High Beam
Headlamp
HDLP-LOW Headlamp Low Beam Relay
A/C COMPAir Conditioning Compressor
Relay
A/C COMP Air Conditioning Compressor
TCMB Transmission Control Module
RR WPR Not Used
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
Universal Home Remote
System, Rear Heated Seats
LO HDLP-LTDriver’s Side Headlamp
Low BeamFuses Usage
BTSIBrake Transmission Shift
Interlock System
CRNK Starting System
LO HDLP-RTPassenger’s Side Headlamp
Low Beam
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn Relay
W/S WASH Not Used
W/S WASH Not Used
INFOOnStar
®/Rear Seat
Entertainment
RADIO AMP Radio Ampli er
RH HIDRight Hand High Intensity
Discharge Lamp
HORN Horn Fuse
EAP Electric Adjustable Pedals
TRECAll-Wheel Drive Module
(If Equipped)
SBA Supplemental Brake Assist
5-117
Auxiliary Electric Cooling Fan
Fuse Block
The auxiliary electric
cooling fan fuse block is
located in the engine
compartment on the
driver’s side of the vehicle
next to the underhood
fuse block.
Lift the cover for access to the fuse/relay block.
Fuses Usage
COOL/FAN Cooling Fan
COOL/FAN Cooling Fan Relay Fuse
COOL/FAN Cooling Fan Fuse
Relays Usage
COOL/FAN 1 Cooling Fan Relay 1
COOL/FAN 3 Cooling Fan Relay 3
COOL/FAN 2 Cooling Fan Relay 2
5-118
Driving (cont.)
Off-Road....................................................4-17
Recovery Hooks..........................................4-43
Rocking Your Vehicle to Get it Out.................4-42
Winter........................................................4-38
Dual Automatic Climate Control System.............3-22
DVD
Rear Seat Entertainment System...................3-80
E
Electrical System
Add-On Equipment.....................................5-109
Center Instrument Panel Fuse Block.............5-112
Fuses and Circuit Breakers.........................5-109
Instrument Panel Fuse Block.......................5-110
Power Windows and Other Power Options....5-109
Underhood Fuse Block...............................5-113
Windshield Wiper Fuses.............................5-109
Engine
Air Cleaner/Filter.........................................5-19
Battery.......................................................5-39
Check and Service Engine Soon Light............3-39
Coolant......................................................5-24
Coolant Heater............................................2-28
Coolant Temperature Gage...........................3-37
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12Engine (cont.)
Exhaust.....................................................2-36
Fan Noise..................................................5-33
Oil .............................................................5-14
Oil Life System...........................................5-17
Overheated Protection Operating Mode...........5-28
Overheating................................................5-26
Starting......................................................2-27
Entry/Exit Lighting...........................................3-18
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-26
Exterior Cargo Lamps......................................3-17
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-19
Finish Damage.............................................5-106
Fixed Mast Antenna.......................................3-101
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-80
Flat Tire, Changing.........................................5-81
Flat Tire, Storing.............................................5-96
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-34
Windshield Washer......................................5-35
5
Fog Lamps....................................................3-16
Front Axle......................................................5-47
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-44
Gasoline Octane........................................... 5-5
Gasoline Speci cations.................................. 5-5
Low Warning Light.......................................3-44
Fuses
Center Instrument Panel Fuse Block.............5-112
Fuses and Circuit Breakers.........................5-109
Instrument Panel Fuse Block.......................5-110
Underhood Fuse Block...............................5-113
Windshield Wiper.......................................5-109
G
Gage
Engine Coolant Temperature.........................3-37
Fuel..........................................................3-44
Oil Pressure...............................................3-41
Speedometer..............................................3-30Gage (cont.)
Tachometer.................................................3-30
Transmission Temperature.............................3-38
Voltmeter Gage...........................................3-34
Garage Door Opener.......................................2-48
Gasoline
Octane........................................................ 5-5
Speci cations............................................... 5-5
Glove Box.....................................................2-53
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp
Aiming.......................................................5-48
Horizontal Aiming.........................................5-49
Vertical Aiming............................................5-50
Headlamps....................................................5-53
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-52
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-9
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-56
6