GM Service Manual Online
For 1990-2009 cars only

If your vehicle has the DURAMAX® Diesel engine, see the DURAMAX® Diesel manual for more information.

The underhood fuse block is located in the engine compartment, on the driver side of the vehicle.


Object Number: 1610445  Size: A2

Lift the cover to access the fuse block.

Notice: Spilling liquid on any electrical components on the vehicle may damage it. Always keep the covers on any electrical component.

To remove fuses, hold the end of the fuse between your thumb and index finger and pull straight out.


Object Number: 1906794  Size: B5

Fuses

Usage

1

Right Trailer Stop/Turn Lamp

2

Electronic Suspension Control, Automatic Level Control Exhaust

3

Left Trailer Stop/Turn Lamp

4

Engine Controls

5

Engine Control Module, Throttle Control

6

Trailer Brake Controller

7

Front Washer

8

Oxygen Sensor

9

Antilock Brakes System 2

10

Trailer Back-up Lamps

11

Driver Side Low-Beam Headlamp

12

Engine Control Module (Battery)

13

Fuel Injectors, Ignition Coils (Right Side)

14

Transmission Control Module (Battery)

15

Vehicle Back-up Lamps

16

Passenger Side Low-Beam Headlamp

17

Air Conditioning Compressor

18

Oxygen Sensors

19

Transmission Controls (Ignition)

20

Fuel Pump

21

Fuel System Control Module

22

Not Used

23

Not Used

24

Fuel Injectors, Ignition Coils (Left Side)

25

Trailer Park Lamps

26

Driver Side Park Lamps

27

Passenger Side Park Lamps

28

Fog Lamps

29

Horn

30

Passenger Side High-Beam Headlamp

31

Daytime Running Lamps

32

Driver Side High-Beam Headlamp

33

Daytime Running Lights 2

34

Sunroof

35

Key Ignition System, Theft Deterrent System

36

Windshield Wiper

37

SEO B2 Upfitter Usage (Battery)

38

Electric Adjustable Pedals

39

Climate Controls (Battery)

40

Airbag System (Ignition)

41

Amplifier

42

Audio System

43

Miscellaneous (Ignition), Cruise Control

44

Not Used

45

Airbag System (Battery)

46

Instrument Panel Cluster

47

Power Take-Off

48

Auxiliary Climate Control (Ignition), Compass-Temperature Mirror

49

Center High-Mounted Stoplamp (CHMSL)

50

Rear Defogger

51

Heated Mirrors

52

SEO B1 Upfitter Usage (Battery)

53

Cigarette Lighter, Auxiliary Power Outlet

54

Automatic Level Control Compressor Relay, SEO Upfitter Usage

55

Climate Controls (Ignition)

56

Engine Control Module, Secondary Fuel Pump (Ignition)


J-Case Fuses

Usage

57

Cooling Fan 1

58

Not Used

59

Heavy Duty Antilock Brake System

60

Cooling Fan 2

61

Antilock Brake System 1

62

Starter

63

Stud 2 (Trailer Brakes)

64

Left Bussed Electrical Center 1

65

Not Used

66

Heated Windshield Washer System

67

Four-Wheel Drive System

68

Stud 1 (Trailer Connector Battery Power) (Optional - 40A Fuse Required)

69

Mid-Bussed Electrical Center 1

70

Climate Control Blower

72

Not Used

73

Left Bussed Electrical Center 2


Relays

Usage

FAN HI

Cooling Fan High Speed

FAN LO

Cooling Fan Low Speed

ENG EXH VLV

Not Used

FAN CNTRL

Cooling Fan Control

HDLP LO/HID

Low-Beam Headlamp

FOG LAMP

Front Fog Lamps

A/C CMPRSR

Air Conditioning Compressor

STRTR

Starter

PWR/TRN

Powertrain

FUEL PMP

Fuel Pump

PRK LAMP

Parking Lamps

REAR DEFOG

Rear Defogger

RUN/CRANK

Switched Power