GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block - Underhood Label Usage
Table 2: Fuse Block - Underhood C1
Table 3: Fuse Block - Underhood C2
Table 4: Fuse Block - Underhood C3
Table 5: Fuse Block - Underhood C4
Table 6: Fuse Block - Underhood C5
Table 7: Fuse Block - Left Rear Label Usage
Table 8: Fuse Block - Left Rear
Table 9: Fuse Block - Right Rear Label Usage
Table 10: Fuse Block - Right Rear
Table 11: Fuse Block - Steering Column Usage

Fuse Block - Underhood Label


Object Number: 1547382  Size: MF

Fuse Block - Underhood Label Usage

Device

Rating

Description

ABS Fuse

50 A

Electronic Brake Control Module (EBCM)

ACCESSORY Relay

--

ELEC PRNDL, WPR MOD, and WPR SW Fuses

BLOWER Fuse

40 A

BLOWER Relay

BLOWER Relay

--

Blower Motor Control Module and Blower Motor

BODY W/H

--

Underhood Fuse Block C2 (2-Way Connector) and C3 (2-Way Connector)

CCP Fuse

10 A

HVAC Control Module

CMP CLU Relay

--

Compressor Clutch

COMP CLTCH Fuse

10 A

CMP CLU Relay

DIMMING Fuse

10 A

Dash Integration Module (DIM) and License Lamps

DIM/ALDL Fuse

10 A

Dash Integration Module (DIM) and Data Link Connector (DLC)

DRL Relay (T65)

--

LT LOW BEAM and RT LOW BEAM Fuses

ECM Fuse

15 A

Engine Control Module (ECM) (LP1/LY7)

ECM/TCM Fuse

10 A

Engine Control Module (ECM) (LP1/LY7), Powertrain Control Module (PCM) (LS6), Instrument Panel Cluster (IPC), Theft Deterrent Control Module and Transmission Control Module (TCM) (LP1/LY7 w/M82)

ELEC PRNDL Fuse

10 A

Electronic PRNDL (M82)

ENG W/H

--

Underhood Fuse Block C5 (26-Way Connector)

EVEN INJ/COIL Fuse

15 A

Fuel Injector 2 (LP1/LY7/LS6), Fuel Injector 4 (LP1/LY7/LS6), Fuel Injector 6 (LP1/LY7/LS6), Fuel Injector 8 (LS6), Ignition Coil 2 (LP1/LY7), Ignition Coil 4 (LP1/LY7), Ignition Coil 6 (LP1/LY7), Ignition Coil/Module 2 (LS6), Ignition Coil/Module 4 (LS6), Ignition Coil/Module 6 (LS6) and Ignition Coil/Module 8 (LS6)

FLASHER Fuse

15 A

Turn Signal/Hazard Flasher Module

FOG LAMP Fuse

15 A

FOG LAMP Relay

FOG LAMP Relay

--

Fog Lamps

FUSE PULLER

--

Fuse Puller

HDLP WASH Circuit Breaker

30 A

HDLP WASH Relay (CE4)

HDLP WASH Relay

--

Headlamp Washer Fluid Pump (CE4)

HI BEAM Relay

--

LT HI BEAM and RT HI BEAM Fuses

HI FAN Fuse

30 A

HI SPEED FAN Relay

HI SPEED FAN Relay

--

Cooling Fan - Left

HORN Fuse

15 A

HORN Relay

HORN Relay

--

Horns

HTR VLV/CLTCH Fuse

10 A

Clutch Pedal Position (CPP) Sensor (M35/M12), and Starter Relay (Japan and RHD w/M82)

IGN-1 Relay

--

HTR VLV/CLTCH, TCM/IPC, WASH NOZ, STRG CTLS and IGN MOD/MAF Fuses

IGN MOD/MAF Fuse

15 A

Mass Air Flow (MAF) Sensor (LP1/LY7/LS6)

IGN SW Fuse

10 A

Ignition Switch

I/P OUTLET Fuse

20 A

Cigar Lighter

L REAR Fuse

60 A

Fuse Block - Left Rear

L REAR Fuse

60 A

Fuse Block - Left Rear

LOW BEAM/HID Relay

--

LT LOW BEAM and RT LOW BEAM Fuses

LOW FAN Fuse

30 A

LO SPEED FAN Relay

LOW SPEED FAN Relay

--

Cooling Fan - Right

LT HI BEAM Fuse

10 A

Headlamp - Left

LT LOW BEAM Fuse

20 A

Headlamp - Left

LT PARK Fuse

10 A

Headlamp - Left, Side Marker Lamp - LF, Tail Lamp - Left (Domestic), Marker Lamp - LR (Export) and L POSITION Relay (Export)

MAIN Relay

--

LO SPEED FAN, HI SPEED FAN and S/P FAN Relays, ECM, TOS, PRE O2/CAM, POST O2, ODD INJ/COIL and EVEN INJ/COIL Fuses

ODD INJ/COIL Fuse

15 A

Fuel Injector 7(LS6), Ignition Coil 1 (LP1/LY7), Ignition Coil 3 (LP1/LY7), Ignition Coil 5 (LP1/LY7), Ignition Coil/Module 1 (LS6), Ignition Coil/Module 3 (LS6), Ignition Coil/Module 5 (LS6) and Ignition Coil/Module 7 (LS6)

OUTLET Fuse

30 A

Auxiliary Power Outlet

PARK LAMP Relay

--

RT PARK, LT PARK and DIMMING Fuses

POST O2 Fuse

15 A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2, Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 and PUSHER FAN Relay (V92)

PRE O2/CAM Fuse

15 A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1, HO2S Bank 2 Sensor 1, Intake Manifold Runner Control (IMRC) Solenoid (LP1/LY7), EVAP Canister Purge Solenoid Valve (LP1/LY7), Camshaft Actuator Solenoid Intake Bank 1 (LP1/LY7), Camshaft Actuator Solenoid Exhaust Bank 1 (LP1/LY7), Camshaft Actuator Solenoid Intake Bank 2 (LP1/LY7), Camshaft Actuator Solenoid Exhaust Bank 2 (LP1/LY7), Reverse Lockout Solenoid (LS6) and Skip Shift Solenoid (LS6)

R REAR Fuse

60 A

Fuse Block - Right Rear

R REAR Fuse

60 A

Fuse Block - Right Rear

RT HI BEAM Fuse

10 A

Headlamp - Right

RT LOW BEAM Fuse

20 A

Headlamp - Right

RT PARK Fuse

10 A

Headlamp - Right, Side Marker Lamp - RF, Tail Lamp - Right (Domestic), Marker Lamp - RR (Export) and R POSITION Relay (Export)

S/P FAN Relay

--

Cooling Fans

SPARE Fuse

--

Not Used

STARTER Fuse

30 A

STARTER Relay

STARTER Relay

--

Starter Solenoid

STRG CTLS Fuse

10 A

Steering Wheel Controls - Right (LS6) and Turn Signal/Multifunction Switch

TCM/IPC Fuse

15 A

Instrument Panel Cluster (IPC), Engine Control Module (ECM) (LP1/LY7), Powertrain Control Module (PCM) (LS6), Throttle Actuator Control (TAC) Module (LS6) and Transmission Control Module (TCM) (M82)

THEFT Fuse

7.5 A

Engine Control Module (ECM) (LP1/LY7), Theft Deterrent Control Module and Transmission Control Module (TCM) (M82)

TOS Fuse

10 A

Vehicle Speed Sensor (VSS) (M35), EVAP Canister Purge Solenoid Valve (LS6)

VOLT CHECK Fuse

10 A

Dash Integration Module (DIM)

WASH NOZ Fuse

10 A

Heated Washer Nozzles (XA7) and Headlamps (TR7)

WPR MOD Fuse

30 A

Windshield Wiper/Washer Module

WPR SW Fuse

10 A

Windshield Wiper/Washer Switch

Fuse Block - Underhood Top View


Object Number: 882805  Size: MF

Fuse Block - Underhood Bottom View


Object Number: 882806  Size: MF

Fuse Block - Underhood C1


Object Number: 823267  Size: CH

Connector Part Information

    • 7283-4846-30
    • 36-Way F Hybrid (BK)
    • Forward Lamp Harness Connector

Pin

Wire Color

Circuit No.

Function

1

WH

504

Cooling Fan Low Reference

2

GY

532

Cooling Fan Motor Supply Voltage

3

L-BU

409

Cooling Fan Motor Supply Voltage

4

D-GN

29

Horn Control

5

D-GN/WH

711

Left Headlamp High Beam Supply Voltage

6

YE

5358

Auxiliary Cooling Fan Motor Supply Voltage (Export w/V92)

7

--

--

Not Used

8

TN/WH

312

Right Headlamp Low Beam Supply Voltage

9

BN

341

Ignition 3 Voltage (TR7)

10

BN/WH

309

Right Park Lamp Supply Voltage

11

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage (Export w/T90)

12

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage

13-16

--

--

Not Used

17

L-GN/

BK

311

Right Headlamp High Beam Supply Voltage

18

--

--

Not Used

19

PK

1439

Ignition 1 Voltage (TR7)

PK

1439

Ignition 1 Voltage (TR7)

20

D-BU

5364

Left DRL/Turn Supply Voltage

PU

1472

Left Park Lamp Supply Voltage (Export w/o TR7)

21

GY

868

Headlamp Leveling Switch Bit 1 Signal (w/ TR7)

22

YE

1834

Forward Discriminating Sensor Signal

23

--

--

Not Used

24

PU

709

Left Park Lamp Supply Voltage

25

D-BU/

WH

1315

Right Turn Signal Indicator Lamp Supply Voltage

26

D-BU/

WH

1315

Right Turn Signal Indicator Lamp Supply Voltage (Export w/T90)

27

PU

2234

Front Fog Lamp Supply Voltage

28

PU

2234

Front Fog Lamp Supply Voltage

29

BK

250

Ground

30

D-GN

5365

Right DRL/Turn Supply Voltage (Domestic)

BN/WH

1473

Right Park Lamp Supply Voltage (TT7 w/o TR7)

31

PK/BK

109

Hood Ajar Switch Signal (Export w/ UA2)

32

YE

61

Low Reference

33

L-GN/BK

735

Ambient Air Temperature Sensor Signal

34

--

--

Not Used

35

TN/OG

5045

Discriminating Sensor - Low Reference

36

YE

712

Left Headlamp Low Beam Supply Voltage

Fuse Block - Underhood C2


Object Number: 823283  Size: CH

Connector Part Information

    • 7123-4123-30
    • 2-Way F L-Type (BK)
    • Body Harness Connector

Pin

Wire Color

Circuit No.

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage

Fuse Block - Underhood C3


Object Number: 823283  Size: CH

Connector Part Information

    • 7123-4129-90
    • 2-Way F L-Type (BU)
    • Body Harness Connector

Pin

Wire Color

Circuit No.

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage

Fuse Block - Underhood C4


Object Number: 823271  Size: CH

Connector Part Information

    • 7283-4847-30
    • 68-Way F Hybrid (BK)
    • I/P Harness Connector

Pin

Wire Color

Circuit No.

Function

1

L-BU/WH

1314

Left Turn Signal Indicator Lamp Supply Voltage

2

--

--

Not Used

3

YE

32

Instrument Panel Lamp Fuse Supply Voltage 1

4

D-BU/

WH

1315

Right Turn Signal Indicator Lamp Supply Voltage

5

YE

32

Instrument Panel Lamp Fuse Supply Voltage 1

6

RD/WH

1140

Battery Positive Voltage

7

RD/WH

1140

Battery Positive Voltage

8

BN/WH

1473

Right Position Lamp Supply Voltage (Export w/T79)

D-GN

5365

Right DRL/Turn Supply Voltage (Domestic)

9

--

--

Not Used

10

PK/BK

109

Hood Ajar Switch Signal (Export w/UA2)

11

YE

61

Low Reference

12

PK

339

Ignition 1 Voltage

13

L-GN/BK

735

Ambient Air Temperature Sensor Signal

14

GY

868

Headlamp Leveling Switch Bit 1 Signal (w/TR7)

15

TN/OG

5045

Discriminating Sensor - Low Reference

16

--

--

Not Used

17

RD/WH

3540

Battery Positive Voltage

18

BN

247

Blower Motor Relay Control

19

D-GN

1399

Cigar Relay Control

20

RD/WH

1740

Battery Positive Voltage

21

WH

1080

Park Lamp Relay Control

22

D-GN/WH

1317

Fog Lamp Relay Control

23

RD/WH

340

Battery Positive Voltage

24

--

--

Not Used

25

RD/WH

2040

Battery Positive Voltage

26

PU

1197

Headlamp Washer Pump Control (CE4)

27

--

--

Not Used

28

PK

1439

Ignition 1 Voltage (XA7)

PK

1439

Ignition 1 Voltage (XA7)

29-30

--

--

Not Used

31

RD/WH

3340

Battery Positive Voltage

32

RD/WH

1440

Battery Positive Voltage

33

RD/WH

1440

Battery Positive Voltage

34

--

--

Not Used

35

BN

341

Ignition 3 Voltage (TR7)

36

PK/WH

1970

Headlamp Low Beam Relay Control

37

BN

4

Accessory Voltage

38

OG

228

Windshield Washer Pump Control (CTS-V w/CE4)

TN/WH

99

Windshield Washer Fluid Level Signal (CTS w/CE4)

39

--

--

Not Used

40

TN

28

Horn Relay Control

41

YE

43

Accessory Voltage

42

PU

709

Left Park Lamp Supply Voltage

43

D-GN

1483

Lighting Relay Coil Supply Voltage Control

44

PK

3

Ignition 1 Voltage

45

PU/WH

1035

Starter Relay Coil Supply Voltage (Domestic and LHD International)

PU/WH

1035

Starter Relay Coil Supply Voltage (Domestic and LHD International)

PK

839

Ignition 1 Voltage (RHD w/M82 and Japan w/M82)

46

--

--

Not Used

47

PK

839

Ignition 1 Voltage (LP1/LY7)

48

PK

839

Ignition 1 Voltage

49

--

--

Not Used

50

OG

228

Windshield Washer Pump Control (CTS w/CE4)

TN/WH

99

Windshield Washer Fluid Level Signal (CTS-V w/CE4)

51

--

--

Not Used

52

RD/WH

1940

Battery Positive Voltage

53

PK

239

Ignition 1 Voltage

54

--

--

Not Used

55

YE

1834

Forward Discriminating Sensor Signal

56

D-BU

5364

Left DRL/Turn Supply Voltage (Domestic)

PU

1472

Left Position Lamp Supply Voltage (Export w/T79)

57

L-BU

188

Blower Motor Control Processor Supply Voltage

58

BN/WH

309

Right Park Lamp Supply Voltage

59

YE

243

Accessory Voltage (M82)

60

TN

5052

Headlamp Washer Ground (CE4)

61

L-GN/

BK

592

DRL Relay Control (Export w/T65)

62

YE

143

Accessory Voltage

63

--

--

Not Used

64

YE

343

Accessory Voltage

65

PK/BK

5292

Ignition 1 Voltage

66

--

--

Not Used

67

TN/WH

1969

Headlamp High Beam Relay Control

68

YE

5358

Auxiliary Cooling Fan Motor Supply Voltage (Export w/V92)

Fuse Block - Underhood C5


Object Number: 823264  Size: CH

Connector Part Information

    • 7283-6376-30
    • 26-Way F Hybrid (BK)
    • Engine Harness Connector

Pin

Wire Color

Circuit No.

Function

1

RD/BK

342

Battery Positive Voltage

2

PK/BK

5705

Ignition 1 Voltage (LS6)

3

PK/BK

5291

Ignition 1 Voltage

4

D-GN/WH

459

A/C Compressor Clutch Relay Control

5

D-GN

59

A/C Compressor Clutch Supply Voltage

6

PK

739

Ignition 1 Voltage

7

--

--

Not Used

8

PU

6

Starter Solenoid Crank Voltage

9

PK/BK

5293

Ignition 1 Voltage (LS6)

10

PK/BK

5293

Ignition 1 Voltage

11

PK

239

Ignition 1 Voltage

12

PK

239

Ignition 1 Voltage

13

PK/BK

5705

Ignition 1 Voltage

14

--

--

Not Used

15

PK/BK

5290

Ignition 1 Voltage

16

PK/BK

5290

Ignition 1 Voltage

17

D-BU

473

High Speed Cooling Fan Relay Control

18

YE

343

Accessory Voltage (LP1/LY7)

19

YE

343

Accessory Voltage (M82)

20

--

--

Not Used

21

D-GN

335

Low Speed Cooling Fan Relay Control

22

PK/BK

5294

Ignition 1 Voltage

23

PK/BK

5294

Ignition 1 Voltage

24

YE

447

Starter Relay Coil Control

25

BN

5069

MAIN Relay Control

26

RD/WH

1440

Battery Positive Voltage

RD/WH

1440

Battery Positive Voltage

Fuse Block - Left Rear Label


Object Number: 1285386  Size: SF

Fuse Block - Left Rear Label Usage

Device

Rating

Description

AMP Fuse

30 A

Audio Amplifier

AUDIO Fuse

10 A

Digital Radio Receiver (U2K/U2L), Vehicle Communication Interface Module (VCIM) and Radio

BAS Fuse

15 A

BAS Relay

BAS Relay

--

Tail/Stop Lamps (Domestic), Stop Lamps (Export), and Center High Mounted Stop Lamp (CHMSL)

CCP Fuse

10 A

HVAC Control Module

DRIVER DR MOD Fuse

10 A

Driver Door Module (DDM)

FUSE PULLER

--

Fuse Puller

HDLP LEVELING Fuse

10 A

Headlamp Leveling Sensor - Rear (Export w/TR7) and Headlamp Leveling Sensor - Front (Export w/TR7)

IGN 3 Fuse

10 A

A/T Shift Lock Control Solenoid (M82), Heated Seat Module - Driver (KA1), Heated Seat Module - Front Passenger (KA1), Recirculation Actuator and REAR DEFOG Relay

IGN 3 Relay

--

CCP, HDLP LEVELING and IGN 3 Fuses

L FRT HTD SEAT MOD Fuse

10 A

Heated Seat Module - Driver (KA1)

L POSITION Relay

--

Tail Lamp - Left (Export) and Position Lamp - Left (Export)

MEM/ADAPT SEAT Fuse

10 A

Power Seat Switch - Driver (A45), Memory Seat Module (MSM) (A45) and Lumbar Adjuster Switch - Driver (AL2)

POSITION LAMP Fuse

10 A

L POSITION Relay (Export) and R POSITION Relay (Export)

PUSHER FAN Fuse

30 A

PUSHER FAN Relay (V92)

PUSHER FAN Relay

--

Cooling Fan - Auxiliary (V92)

R POSITION Relay

--

Tail Lamp - Right (Export) and Position Lamp - Right (Export)

REAR DR MOD Fuse

15 A

Left Rear Door Module (LRDM) and Right Rear Door Module (RRDM)

REV LAMP Relay

--

Back Up Lamps and Inside Rearview Mirror (ISRVM)

REVERSE LAMP Fuse

10 A

REV LAMP Relay

SEAT C/B Circuit Breaker

30 A

Memory Seat Module (MSM) (A45), Power Seat Switch - Driver, Power Seat Switch - Passenger (AH8) and Lumbar Adjuster Switch - Passenger (AL2)

SPARE Fuse

--

Not Used

STANDING LAMP Relay

--

L POSITION Relay (Export) and R POSITION Relay (Export)

TRK DR REL SOL Relay

--

Rear Compartment Lid Release Actuator

TRUNK DR RELEASE Fuse

10 A

TRK DR REL SOL Relay, Radio Antenna Module, Garage Door Opener and Intrusion Sensor (UA2)

Fuse Block - Left Rear Top View


Object Number: 882694  Size: SF

Fuse Block - Left Rear Bottom View


Object Number: 882688  Size: SF

Fuse Block - Left Rear


Object Number: 1283880  Size: CH

Connector Part Information

    • 7123-4123-30
    • 2-Way F L-Type (BK)

Pin

Wire Color

Circuit No.

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage

Fuse Block - Right Rear Label


Object Number: 1285389  Size: SF

Fuse Block - Right Rear Label Usage

Device

Rating

Description

ABS Fuse

10 A

Electronic Brake Control Module (EBCM)

AIRBAG Fuse

10 A

Inflatable Restraint Sensing and Diagnostic Module (SDM)

CANISTER VENT Fuse

10 A

EVAP Canister Vent Solenoid Valve

DR MOD PWR C/B Circuit Breaker

30 A

Driver Door Module (DDM), Front Passenger Door Module (FPDM), Left Rear Door Module (LRDM) and Right Rear Door Module (RRDM)

FUEL PUMP MOTOR Relay

--

Fuel Pump and Sender Assembly

FUEL PUMP MTR Fuse

15 A (V6)20 A (V8)

FUEL PUMP MOTOR Relay

FUSE PULLER

--

Fuse Puller

IGN 1 Relay

--

AIRBAG, RIM and ABS Fuses

INT LAMP Relay

--

Courtesy Lamps, Dome Lamp - Rear, Sunshades and Overhead Console

INTERIOR LAMP Fuse

10A

INT LAMP Relay

POWER SOUNDER Fuse

10 A

Inclination Sensor (UA2) and Theft Deterrent Alarm (UA2)

PSGR DR MOD Fuse

10 A

Front Passenger Door Module (FPDM)

R FRT HTD SEAT MOD Fuse

10 A

Heated Seat Module - Front Passenger (KA1)

RAP Relay

--

Sunroof Module

REAR DEFOG Fuse

40 A

REAR DEFOG Relay

REAR DEFOG Relay

--

Rear Window Defogger

REAR FOG LAMP Fuse

10 A

REAR FOG LAMP Relay (Export w/T79)

REAR FOG LAMP Relay

--

Rear Fog Lamps (Export w/T79)

RIM/IGN SW Fuse

10 A

Rear Integration Module (RIM), Ignition Switch and Ignition Lock Cylinder Control Actuator

RIM Fuse

10 A

Rear Integration Module (RIM), Inside Rearview Mirror (ISRVM) and Theft Deterrent Alarm (UA2)

SPARE Fuse

--

Not Used

SUNROOF MOD Fuse

30 A

RAP Relay

TRUNK DIODE

--

Rear Compartment Lamp, Rear Integration Module (RIM) and Rear Compartment Lid Release Actuator

TV/VICS Fuse

10 A

Traffic Information Receiver (Export w/U2X) and TV Antenna Module (Export w/U2Y/U2X)

Fuse Block - Right Rear Top View


Object Number: 1370914  Size: SF

Fuse Block - Right Rear Bottom View


Object Number: 1370918  Size: SF

Fuse Block - Right Rear


Object Number: 1283880  Size: CH

Connector Part Information

    • 7123-4123-30
    • 2-Way F L-Type (BK)

Pin

Wire Color

Circuit No.

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage

Fuse Block - Steering Column


Object Number: 1332486  Size: MF

Fuse Block - Steering Column Usage

No.

Device

Rating

Description

Wire Color

1

Cruise Control Switch

2 A

Steering Wheel Controls - Right (LS6)

PK

2

Steering Wheel Control Switch

2 A

Steering Wheel Controls - Right (Early Production)

PU

3

Dimming

2 A

Steering Wheel Controls Illumination

YE

4

Horn

2 A

Horn Switch (Early Production)

D-GN