Page 435 of 562
License Plate Lamp
To replace one of these bulbs, do the following:
1. Remove the two screws holding the
license plate lamp lens.
2. Pull the lens away from the lamp assembly.
3. Pull the old bulb straight out from the
bulb socket.
4. Install the new bulb.
5. Replace the lamp assembly lens and tighten
the screws.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamps 3157
Front Sidemarker Lamps 194
Front Turn Signal Lamps 3457
License Plate Lamp W5W
Halogen Headlamps
High-Beam 9005 HB3
Low-Beam 9006 HB4
Rear Turn Signal, Stoplamp,
and Taillamp3057
For replacement bulbs not listed here, contact
your dealer.
435
Page 494 of 562
Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger’s Side High-Beam
HeadlampFuses Usage
3Passenger’s Side Low-Beam
Headlamp
4 Back-Up Trailer Lamps L6 Engine
494
Page 495 of 562
Fuses Usage
5Driver’s Side High-Beam
Headlamp
6Driver’s Side Low-Beam
Headlamp
7 Windshield Wiper
8 Active Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog Lamps
12 Stoplamp
13 Cigarette Lighter
15 Electric Adjustable Pedals
16Truck Body Controller,
Ignition 1
17 Crank
18 Airbag
19 Trailer Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle ControlFuses Usage
24Instrument Panel Cluster,
Driver Information Center
25Automatic Shift Lock Control
System
26Transmission Control Module
Canister
27 Backup
28 Powertrain Control Module 1
29 Oxygen Sensor
30 Air Conditioning
31 Truck Body Controller 1
32 Trailer
33 Anti-lock Brakes (ABS)
34 Ignition A
35 Blower Motor
36 Blower
50 Passenger’s Side Trailer Turn
51 Driver’s Side Trailer Turn
52 Hazard Flashers
53 Headlamp Driver Module
54Air Injection Reactor (AIR)
Solenoid
495
Page 496 of 562
Fuses Usage
56 Air Injection Reactor (AIR) Pump
58Vehicle Stability Enhancement
System (StabiliTrak
®)
59 Regulated Voltage Control
Relays Usage
37 Headlamp Wiper
38 Rear Window Wiper/Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
43 High-Beam Headlamp
Relays Usage
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
55Air Injection Reactor (AIR)
Solenoid
57 Powertrain
Miscellaneous Usage
48 Instrument Panel Battery
496
Page 497 of 562
Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger’s Side High-Beam
HeadlampFuses Usage
3Passenger’s Side Low-Beam
Headlamp
4 Back-Up Trailer Lamps V8 Engine
497
Page 498 of 562

Fuses Usage
5Driver’s Side High-Beam
Headlamp
6Driver’s Side Low-Beam
Headlamp
7 Windshield Wiper
8 Active Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog Lamps
12 Stoplamp
13 Cigarette Lighter
14 Ignition Coils
15Transmission Control Module
(TCM) Canister Vent
16 Truck Body Controller, Ignition 1
17 Crank
18 Airbag
19 Trailer Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster,
Driver Information CenterFuses Usage
25Automatic Shift Lock Control
System
26 Engine 1
27 Backup
28 Powertrain Control Module 1
29 Powertrain Control Module
30 Air Conditioning
31 Injector Bank A
32 Trailer
33 Anti-lock Brakes (ABS)
34 Ignition A
35 Blower Motor
36 Ignition B
50 Passenger’s Side Trailer Turn
51 Driver’s Side Trailer Turn
52 Hazard Flashers
53 Transmission
54 Oxygen Sensor Bank B
55 Oxygen Sensor Bank A
56 Injector Bank B
57 Headlamp Driver Module
58 Truck Body Controller 1
59 Electric Adjustable Pedal
498
Page 499 of 562
Fuses Usage
61Vehicle Stability Enhancement
System (StabiliTrak
®)
62 Regulated Voltage Control
Relays Usage
37 Headlamp Wiper
38 Rear Window Wiper/Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
60 Powertrain
Miscellaneous Usage
48 Instrument Panel Battery
Rear Underseat Fuse Block
499
Page 553 of 562

G
Gage
Check Gages Warning Light..................... 216
Engine Coolant Temperature.................... 208
Fuel......................................................... 217
Oil Pressure............................................. 213
Speedometer........................................... 199
Tachometer.............................................. 199
Voltmeter Gage........................................ 205
Garage Door Opener..........................149, 150
Gasoline
Octane..................................................... 382
Speci cations........................................... 383
Gate Ajar Light............................................ 216
Glove Box................................................... 160
GM Mobility Reimbursement Program.......... 531
H
Hazard Warning Flashers............................ 170
Head Restraints............................................ 17
Headlamps.........................................179, 431
Automatic Headlamp System.................... 181
Bulb Replacement.................................... 430
Daytime Running Lamps.......................... 180Headlamps (cont.)
Electrical System..................................... 492
Flash-to-Pass........................................... 173
Front Turn Signal, Sidemarker and
Parking Lamps..................................... 432
Halogen Bulbs......................................... 430
High/Low Beam Changer......................... 173
On Reminder........................................... 180
Washer.................................................... 175
Heated Seats................................................ 11
Heater......................................................... 186
Heater......................................................... 189
Highbeam On Light..................................... 215
Highway Hypnosis....................................... 341
Hill and Mountain Roads............................. 342
Hood
Checking Things Under............................ 388
Release................................................... 388
Horn............................................................ 170
How to Use This Manual ................................ 4
How to Wear Safety Belts Properly............... 26
553