Page 400 of 452
Fuses Usage
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 Headlamp Driver Module
54 Air Injection Reactor (AIR) Solenoid
56 Air Injection Reactor (AIR) Pump
Relays Usage
37 Blank or Headlamp Washer
38 Rear Window WasherFuses Usage
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
55 Air Injection Reactor (AIR) Solenoid
Miscellaneous Usage
48 Instrument Panel Battery
5-96
Page 402 of 452

Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger’s Side High-Beam
Headlamp
3Passenger’s Side Low-Beam
Headlamp
4 Back-Up-Trailer Lamps
5 Driver’s Side High-Beam Headlamp
6 Driver’s Side Low-Beam Headlamp
7 Rear Window Washer
8 Automatic Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog Lamps
12 Stoplamp
13 Cigarette Lighter
14 Ignition Coils
15 Canister Vent
16 Truck Body Controller, Ignition 1
17 Crank
18 Airbag
19 Trailer Electric Brake
20 Cooling Fan
21 HornFuses Usage
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25 Automatic Shift Lock Control System
26 Engine 1
27 Back-Up
28 Powertrain Control Module 1
29 Powertrain
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
5-98
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Fuses Usage
58 Truck Body Controller 1
59 Electric Adjustable Pedal
Relays Usage
37 Headlamp Washer
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Wipers/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 BatteryRear Underseat Fuse Block
5-99
Page 404 of 452
Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Endgate Module 2
04 Truck Body Controller 3
05 Rear Fog Lamps
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Ampli er
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Blank
16Vehicle Center High-Mounted Stop
Lamp
17 Right Rear Parking Lamps
18 Locks
19 Liftgate Module/Driver Seat Module
20 Blank
21 Lock
23 Blank
24 Unlock
5-100
Page 405 of 452
Fuses Usage
25 Blank
26 Blank
27OnStar
®Overhead Battery, OnStar®
System
28 Sunroof
29 Rainsense™ Wipers
30 Parking Lamps
31 Truck Body Controller Accessory
32 Truck Body Controller 5
33 Front Wipers
34 Vehicle Stop
35 Transmission Control Module
36 Heat Ventilation Air Conditioning B
37 Front Parking Lamps
38 Left Turn Signal
Fuses Usage
39 Heat Ventilation Air Conditioning I
40 Truck Body Controller 4
41 Radio
42 Trailer Park
43 Right Turn Signal
44 Heat Ventilation Air Conditioning
45 Rear Fog Lamps
46 Auxiliary Power 1
47 Ignition 0
48 Four-Wheel Drive
49 Blank
50 Truck Body Controller Ignition
51 Brakes
52 Truck Body Controller Run
5-101
Page 443 of 452

E
Electrical System
Add-On Equipment......................................5-92
Engine Compartment Fuse Block...................5-93
Fuses and Circuit Breakers...........................5-93
Headlamps.................................................5-92
Power Windows and Other Power Options......5-92
Rear Underseat Fuse Block..........................5-99
Windshield Wiper Fuses...............................5-92
Engine
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-40
Change Engine Oil Light...............................3-39
Check and Service Engine Soon Light............3-35
Coolant......................................................5-24
Coolant Heater............................................2-21
Coolant Temperature Gage...........................3-34
Engine Compartment Overview......................5-12
Exhaust.....................................................2-28
Fan Noise..................................................5-34
Oil .............................................................5-16
Overheating................................................5-27
Reduced Power Light...................................3-40
Starting......................................................2-20
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-17
Extender, Safety Belt.......................................1-25
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage...............................................5-89
Fixed Mast Antenna.......................................3-124
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-68
Flat Tire, Changing.........................................5-69
Flat Tire, Storing.............................................5-80
Fluid
Automatic Transmission................................5-22
Power Steering...........................................5-35
Windshield Washer......................................5-36
Fog Lamps....................................................3-16
Front Axle......................................................5-47
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Check Gas Cap Light...................................3-42
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-42
Gasoline Octane........................................... 5-5
Gasoline Speci cations.................................. 5-5
Low Warning Light.......................................3-42
5
Page 444 of 452

Fuses
Engine Compartment Fuse Block...................5-93
Fuses and Circuit Breakers...........................5-93
Rear Underseat Fuse Block..........................5-99
Windshield Wiper.........................................5-92
G
Gage
Check Gages Warning Light..........................3-41
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-42
Oil Pressure...............................................3-38
Speedometer..............................................3-27
Tachometer.................................................3-27
Voltmeter Gage...........................................3-32
Garage Door Opener.......................................2-42
Gasoline
Octane........................................................ 5-5
Speci cations............................................... 5-5
Gate Ajar Light...............................................3-41
Glove Box.....................................................2-46
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5Headlamps....................................................3-14
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-48
Daytime Running Lamps...............................3-14
Electrical System.........................................5-92
Flash-to-Pass............................................... 3-8
Halogen Bulbs............................................5-48
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-49
High/Low Beam Changer................................ 3-8
Heated Seats................................................... 1-3
Heater...........................................................3-19
Highbeam On Light.........................................3-40
Highway Hypnosis...........................................4-35
Hill and Mountain Roads..................................4-36
HomeLink
®Transmitter....................................2-42
HomeLink®Transmitter, Programming................2-43
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
I
Ignition Positions.............................................2-19
Infants and Young Children, Restraints...............1-28
In ation -- Tire Pressure..................................5-59
6
Page 452 of 452
Windshield Washer.........................................3-10
Fluid..........................................................5-36
Windshield Wiper
Blade Replacement......................................5-51
Fuses........................................................5-92
Rainsense™ Wipers...................................... 3-9
Windshield Wipers......................................... 3-9
Winter Driving................................................4-38X
XM™ Satellite Radio Antenna System..............3-124
Y
Your Vehicle and the Environment....................... 6-2
14