Page 385 of 504
Headlamps
A. Low-Beam
Headlamp (HID)
B. Daytime Running
Lamp
C. Sidemarker LampD. High-Beam
Headlamp
E. Front Parking and
Turn Signal Lamp1. Open the hood of the vehicle.
2. Pry up the eight fastener plugs on the radiator
cover and pull the fasteners out.
3. Lift off the radiator cover.
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Front Turn Signal, Sidemarker and
Daytime Running Lamps
A. Low-Beam
Headlamp (HID)
B. Daytime Running
Lamp
C. Sidemarker LampD. High-Beam
Headlamp
E. Front Turn Signal
Lamp1. Remove the headlamp assembly as described
previously.
2. Remove the rubber, circular-shaped bulb cap for
the affected bulb from the headlamp assembly.
3. Press the locking release lever, turn the bulb socket
counterclockwise and remove it from the headlamp
assembly. (There is no lock for the sidemarker lamp.)
4. Remove the old bulb from the bulb socket.
5. Put the new bulb into the bulb socket.
6. Put the bulb socket into the turn signal housing and
turn it clockwise until it locks. (There is no lock for
the sidemarker lamp.)
7. Reinstall the rubber, circular-shaped bulb cap to the
headlamp assembly.
8. Put the headlamp assembly back into the vehicle
by reversing the previous mentioned steps.
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4. Pull the bulb straight
out from the socket.
5. Press a new bulb into the socket, insert it into the
taillamp housing and turn the socket clockwise into
the taillamp housing until it clicks. The sidemarker
lamp does not have a release tab and therefore will
not click when it is installed.
6. Reinstall the rear lamp assembly and tighten the
screws.Replacement Bulbs
Exterior Lamp Bulb Number
Low-Beam Headlamps (HID) *
High-Beam Headlamps 9005 or 9005 LL
Daytime Running Lamps (DRL) 4114K
Front Marker Lamp 194
Front Parking and Turn Lamp 3157AK
Stop Lamp/Taillamp 3157K
Side Marker Lamp 194
Rear Turn Lamp 3157K
Back-up Lamp 3157K
* For replacement bulbs not listed here, please
consult your dealer.
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Page 450 of 504

Fuses Usage
4WSVent Solenoid
Canister/Quadrasteer Module
Power
RR HVAC Rear Climate Control
AUX PWRAuxiliary Power
Outlet — Console
IGN 1 Ignition Relay
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
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel PumpFuses Usage
F/PMP Fuel Pump (Relay)
O2A 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
SIRSupplemental 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 HIDLeft Hand High Intensity
Discharge Lamps
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Fuses Usage
DRL Daytime Running Lamps
IPC/DICInstrument Panel
Cluster/Driver Information
Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RT High Beam Headlamp-Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMPAir Conditioning Compressor
Relay
A/C COMP Air Conditioning Compressor
RR WPR Rear Wiper/Washer
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
HomeLink, Rear Heated
Seats
LO HDLP-LT Headlamp Low Beam-Left
BTSIBrake Transmission Shift
Interlock SystemFuses Usage
CRANK Starting System
LO HDLP-RT Headlamp Low Beam-Right
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn Relay
W/S WASHWindshield and Rear Window
Washer Pump Relay
W/S WASHWindshield and Rear Window
Washer Pump
INFOOnStar/Rear Seat
Entertainment
RADIO AMP Radio Ampli er
RH HIDRight Hand High Intensity
Discharge Lamp
HORN Horn Fuse
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
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Fuel (cont.)
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-49
Gasoline Octane........................................... 5-5
Gasoline Speci cations.................................. 5-6
Low Warning Light.......................................3-50
Fuel Information Button....................................3-54
FUEL LEVEL LOW.........................................3-64
Fuses
Fuses and Circuit Breakers.........................5-115
Windshield Wiper.......................................5-114
G
Gage
Engine Coolant Temperature.........................3-43
Fuel..........................................................3-49
Oil Pressure...............................................3-47
Speedometer..............................................3-36
Tachometer.................................................3-36
Transmission Temperature.............................3-44
Voltmeter Gage...........................................3-40
Garage Door Opener.......................................2-39Gasoline
Octane........................................................ 5-5
Speci cations............................................... 5-6
Gate Operator and Canadian Programming........2-41
Getting Familiar with Off-Road Driving................4-20
Glove Box.....................................................2-43
GM Mobility Program for Persons with
Disabilities.................................................... 7-6
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp
Aiming.......................................................5-52
Horizontal Aiming.........................................5-54
Vertical Aiming............................................5-54
Headlamp High/Low-Beam Changer.................... 3-9
Headlamps....................................................5-57
Bulb Replacement.......................................5-56
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-61
Halogen Bulbs............................................5-56
High Intensity Discharge (HID) Lighting...........5-56
Headphones...................................................3-87
7