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

Fuse Block - Underhood Label


Object Number: 882704  Size: MF

Fuse Block - Underhood Label Usage

Fuse

Rating

Description

ACCESSORY Relay

--

ELEC PRNDL, WPR MOD, and WPR SW Fuses

BLOWER Fuse

40 A

BLOWER Relay

BLOWER Relay

--

Blower Motor Control Module

BODY W/H

--

Underhood Fuse Block C2 & C3 (2-Way Connectors)

CCP Fuse

10 A

HVAC Control Module

CIGAR Relay

--

OUTLET and IP OUTLET Fuses

CMP CLU Relay

--

Compressor Clutch

COMP CLTCH Fuse

10 A

Compressor Clutch

DIM/ALDL Fuse

10 A

DIM and Data Link Connector

DRL Relay

--

LT LOW BEAM and RT LOW BEAM Fuses

EBCM Fuse

50 A

EBCM

ECM Fuse

15 A

Camshaft Position (CMP) Sensor and ECM

ECM/TCM Fuse

10 A

ECM, IPC, Theft Deterrent Module, and TCM

ELEC PRNDL Fuse

10 A

PRNDL Module

ENG W/H

--

Underhood Fuse Block C5 (26-Way Connector)

FLASHER Fuse

15 A

Turn/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

Headlamp Washer Module

HDLP WASH Jumper Wire (Early Production- Before VIN 105858)

--

Pin R68 to Pin R67, to the Headlamp Washer Relay

HDLP WASH Relay (Late Production- VIN 105858 and After)

--

Headlamp Washer Motor

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-Right

HORN Fuse

15 A

HORN Relay

HORN Relay

--

Horns

HTR VLV/CLTCH Fuse

10 A

Clutch Pedal Position (CPP) Sensor (w/ Manual Transmission) and Coolant Bypass Valve

IGN-1 Relay

--

HTR VLV/CLTCH, TCM/IPC, WASH NOZ, TURN SW, HEATER VALVE, TCC/ET, and IGN MOD Fuses

IGN MOD Fuse

15 A

Ignition Control Modules

IGN SW Fuse

10 A

Ignition Switch

INJ Fuse

10 A

Fuel Injectors

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

LIC/DIMMING Fuse

15 A

DIM and Rear Compartment Lid Applique

LO BEAM Relay/HID

--

LT LOW BEAM and RT LOW BEAM Fuses

LO FAN Fuse

30 A

LO SPEED FAN Relay

LO SPEED FAN Relay

--

Cooling Fan-Left

LT HI BEAM Fuse

10 A

Headlamp-Left

LT LOW BEAM Fuse

20 A

Headlamp-Left

LT PARK Fuse

10 A

Headlamp-Left, Left Position Relay (Export), Side Marker Lamp-LF, and Tail Lamp-Left (Domestic)

MAIN Relay

--

LO SPEED Relay, HI SPEED Relay, S/P FAN Relay, PRE O2 Fuse, IGN-1 Fuse, ECM Fuse, POST O2 Fuse, and INJ Fuse

MANIFOLD Fuse

10 A

Evaporative Emissions (EVAP) Canister Purge Valve Solenoid, Intake Manifold Tuning Valve (IMTV) Solenoid, Intake Manifold Runner Control (IMRC) Solenoid, and Mass Air Flow (MAF) Sensor

OUTLET Fuse

30 A

Auxiliary Power Outlet

PARK LAMP Relay

--

RT PARK, LT PARK, and LIC/DIMMING Fuses

POST O2 Fuse

10 A

HO2S Bank 1 Sensor 2 and HO2S Bank 2 Sensor 2

PRE O2 Fuse

10 A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 and HO2S Bank 2 Sensor 1

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, Right Position Relay (Export), Side Marker Lamp-RF, and Tail Lamp-Right (Domestic)

S/P FAN Relay

Cooling Fans

Spare Fuse

--

Not Used

STARTER Fuse

30 A

Starter Solenoid

STARTER Relay

--

Starter Solenoid

STOP LP SW Fuse

15 A

Stop Lamp Switch

STRG CTLS Fuse

10 A

Steering Wheel Controls and Power Sounder (Export)

TCC/ET Fuse

10 A

Stop Lamp Switch and TCC/Cruise Release Switch

TCM/IPC Fuse

15 A

ECM, IPC, and TCM

THEFT Fuse

7.5 A

ECM, Theft Deterrent Module, and TCM

VOLT CHECK Fuse

10 A

DIM

WASH NOZ Fuse

10 A

Heated Washer Nozzles

WPR MOD Fuse

30 A

Windshield Wiper Module

WPR SW Fuse

10 A

Windshield Wipe/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 Number

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

535

Coolant Temperature Switch Signal (Export Except Japan)

7

--

--

Not Used

8

TN/WH

312

Right Headlamp Low Beam Supply Voltage

9

BN

341

Ignition 3 Voltage (w/ TR7)

10

BN/WH

309

Right Park Lamp Supply Voltage

11

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage (Export)

12

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage (Export)

12

D-BU

5364

Left Front Turn Signal Lamp Supply Voltage (Domestic)

13-16

--

--

Not Used

17

L-GN/

BK

311

Right Headlamp High Beam Supply Voltage

18

WH/BK

5043

Keyword 2000 Serial Data (w/ TR7)

19

PK

1439

Ignition 1 Voltage (w/ TR7)

PK

1439

Ignition 1 Voltage (w/ TR7)

20

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

Front End Sensor Signal

23

--

--

Not Used

24

PU

709

Left Park Lamp Supply Voltage

25

D-GN

5365

Right Front Turn Signal Lamp Supply Voltage (Domestic)

25

D-BU/

WH

1315

Right Front Turn Signal Lamp Supply Voltage (Export)

26

D-BU/

WH

1315

Right Front Turn Signal Lamp Supply Voltage (Export)

27

PU

2234

Front Fog Lamp Supply Voltage

28

PU

2234

Front Fog Lamp Supply Voltage

29

BK

250

Ground

30

BN/WH

1473

Right Park Lamp Supply Voltage (RH Drive and LH Drive w/o TR7)

31

PK/BK

109

Hood Ajar Switch Signal (w/ UA2)

32

YE

61

Low Reference

33

L-GN/BK

735

Ambient Air Temperature Sensor Signal

34

--

--

Not Used

35

TN/OG

5045

Front End 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 Number

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 Number

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 Conenctor

Pin

Wire Color

Circuit Number

Function

1

D-BU

5364

Left Front Turn Signal Lamp Supply Voltage (Domestic)

1

L-BU/

WH

1314

Left Front Turn Signal Lamp Supply Voltage (Export)

2

--

--

Not Used

3

YE

32

I/P Lamp Fuse Supply Voltage 1

4

D-GN

5365

Right Front Turn Signal Lamp Supply Voltage (Domestic)

4

D-BU/

WH

1315

Right Front Turn Signal Lamp Supply Voltage (Export)

5

YE

32

I/P Lamp Fuse Supply Voltage 1

6

RD/WH

1140

Battery Positive Voltage

7

RD/WH

1140

Battery Positive Voltage

8

BN/WH

1473

Right Park Lamp Supply Voltage (Export)

9

--

--

Not Used

10

PK/BK

109

Hood Ajar Switch Signal (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

Front End Sensor Low Reference

16

RD/WH

1640

Battery Positive Voltage

17

RD/WH

3540

Battery Positive Voltage

18

BN

247

Medium Blower Motor Control

19

D-GN

1399

RAP Relay Coil Supply Voltage

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 (w/ CE4)

27

--

--

Not Used

28

PK

1439

Ignition 1 Voltage (w/ XA7)

PK

1439

Ignition 1 Voltage (w/ XA7)

29

PK

1039

Ignition 1 Voltage

30

PK

1039

Ignition 1 Voltage

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

RD/WH

341

Ignition 3 Voltage (w/ TR7)

36

PK/WH

1970

Headlamp Low Beam Relay Control/Headlamp Driver Module Control

37

BN

4

Accessory Voltage

38

OG

228

Windshield Washer Pump Control (w/ CE4)

39

TN

28

Horn Relay Control

40

TN

28

Horn Relay Control

41

YE

43

Accessory Voltage

42

PU

709

Left Park Lamp Supply Voltage

43

D-GN

1483

Control Power - Output

44

PK

3

Ignition 1 Voltage

45

PU/WH

1035

Starter Relay Coil Supply Voltage (MT)

PU/WH

1035

Starter Relay Coil Supply Voltage (MT)

46

--

--

Not Used

47

PK

839

Ignition 1 Voltage

48

PK

839

Ignition 1 Voltage

PK

839

Ignition 1 Voltage (Domestic/Export-Japan

49

--

--

Not Used

50

BN

99

Windshield Washer Fluid Level Signal (w/ CE4)

50

--

--

Not Used (w/o CE4)

51

WH-BK

5043

Keyword 2000 Serial Data (w/ TR7)

52

RD/WH

1940

Battery Positive Voltage

53

PK

239

Ignition 1 Voltage

54

--

--

Not Used

55

YE

1834

Front End Sensor Signal

56

PU

1472

Left Park Lamp Supply Voltage (Export)

57

L-BU

188

Blower Motor Resistor Assembly Supply Voltage

58

BN/WH

309

Right Park Lamp Supply Voltage

59

YE

243

Accessory Voltage (AT)

60

TN

5052

Headlamp Washer Ground (w/ CE4)

61

L-GN/

BK

592

DRL Relay Control (w/ T65)

61

--

--

Not Used (w/o T65)

62

YE

143

Accessory Voltage

63

--

--

Not Used

64

YE

343

Accessory Voltage

65

PK

539

Ignition 1 Voltage (w/ V92)

66

TN/WH

1969

Headlamp Relay Control/Headlamp High Beam Relay Control

67

TN/WH

1969

Headlamp Relay Control/Headlamp High Beam Relay Control

68

YE

535

Coolant Temperature Switch Signal (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 Number

Function

1

RD/BK

342

Battery Positive Voltage

2

-

-

Not Used

3

PK

1239

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

PK

739

Ignition 1 Voltage

8

PU

6

Starter Solenoid Crank Voltage

9

PK

639

Ignition 1 Voltage

10

PK

639

Ignition 1 Voltage

11

PK

239

Ignition 1 Voltage

12

PK

239

Ignition 1 Voltage (AT)

13

PK

439

Ignition 1 Voltage

14

PK

139

Ignition 1 Voltage

15

PK

139

Ignition 1 Voltage

16

PK

139

Ignition 1 Voltage

17

D-BU

473

High Speed Cooling Fan Relay Control

18

YE

343

Accessory Voltage

19

YE

343

Accessory Voltage (AT)

20

-

-

Not Used

21

D-GN

335

Low Speed Cooling Fan Relay Control

22

PK

539

Ignition 1 Voltage

23

PK

539

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 (AT Only)

Fuse Block - Left Rear Label


Object Number: 882702  Size: SF

Fuse Block - Left Rear Label Usage

Fuse/Circuit Breaker

Rating

Description

AMP Fuse

30 A

Audio Amplifier

AUDIO Fuse

10 A

VCIM and Radio

CCP Fuse

10 A

HVAC Control Module

DRIVER DR MOD Fuse

10 A

Door Module-LF (Domestic) or Door Module-RF (Export)

EBCM Fuse

10 A

EBCM

Fuse Puller

--

Fuse Puller

HDLP LEVELING Fuse

10 A

Headlamp Leveling Sensor-Rear (Export w/TR7)

IGN 3 Fuse

10 A

Auto Trans Shift Lock Control Actuator, Heated Seat Module-LF, Heated Seat Module-RF, and HVAC Blower Motor

IGN 3 Relay

--

ABS, CCP, HDLP LVL, and IGN-3 Fuses

L FRT HTD SEAT MOD Fuse

10 A

Heated Seat Module-LF

L POSITION Relay Fuse

--

Tail Lamp-Left (Export)

MEM/ADAPT SEAT Fuse

10 A

Driver Power Seat Switch and Memory Seat Module

POSITION LAMP Fuse

10 A

R POS LP Relay (Export) and L POS LP Relay (Export)

PUSHER FAN Fuse

30 A

PUSHER FAN Relay

PUSHER FAN Relay

--

Pusher Fan (Export)

R POSITION Relay

--

RR Tail Lamp (Export)

REAR DR MOD Fuse

10 A

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

REV LAMP Relay

--

Back Up Lamps

REVERSE LAMP Fuse

10 A

REV LAMP Relay

SEAT Circuit Breaker

30 A

Memory Seat Module, Power Seat Switch-Left Front, and Power Seat Switch-Right Front (AH8)

Spare Fuse

--

Not Used

STANDING LAMP Relay

--

L POS LP Relay (Export) and R POS LP Relay (Export)

TRK DR REL SOL Relay

--

Rear Compartment Lid Release Motor

TRUNK DR RELEASE Fuse

10 A

TRUNK RELEASE Relay

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: 823283  Size: CH

Connector Part Information

    • 7323-4123-90
    • 2-Way F L-Type (BK)

Pin

Wire Color

Circuit Number

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage

Fuse Block - Right Rear Label


Object Number: 882700  Size: SF

Fuse Block - Right Rear Label Usage

Fuse

Rating

Description

AFTER BOIL Fuse

10 A

AFTER BOIL Relay

AFTER BOIL Relay

--

After Boil Heater Pump

CANISTER VENT Fuse

10 A

Evaporative Emissions (EVAP) Canister Vent Solenoid

DR MOD PWR Circuit Breaker

30 A

DDM, Left Rear Door Module (LRDM), PFDM, and Right Rear Door Module (RRDM)

FUEL PUMP MOTOR Relay

--

Fuel Pump Motor

FUEL PUMP MTR Fuse

15 A

Fuel Pump Relay

Fuse Puller

--

Fuse Puller

IGN 1 Relay

--

CANISTER VENT, RIM, and SIR Fuses

INT LAMP Relay

--

Courtesy Lamps, Dome Lamp-Rear, Sunshades

INTERIOR LAMP Fuse

10 A

INT LTG Relay

NAV Fuse

10 A

Traffic Information Receiver and TV Antenna Module

POWER SOUNDER FUse

--

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

PSGR DR MOD Fuse

10 A

Front Passenger Door Module (FPDM)

R FRT HTD SEAT MOD Fuse

10 A

Heated Seat Module-RF

RAP Relay

--

Sunroof Module

REAR DEFOG Fuse

40 A

REAR DEFOG Relay

REAR DEFOG Relay

--

Rear Defogger Element

REAR FOG LAMP Fuse

10 A

REAR FOG LAMP Relay

REAR FOG LAMP Relay

--

Rear Fog Lamps

RIM Fuse

10 A

Ignition Switch, Key Lock Solenoid, and RIM

RIM Fuse

10 A

Inside Rear View Mirror and RIM

SIR Fuse

10 A

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Spare Fuse

--

Not Used

SUNROOF MOD Fuse

30 A

RAP Relay

TRUNK LAMP Fuse

10 A

Rear Compartment Lamp

Fuse Block - Right Rear Top View


Object Number: 882694  Size: SF

Fuse Block - Right Rear Bottom View


Object Number: 882688  Size: SF

Fuse Block - Right Rear


Object Number: 823283  Size: CH

Connector Part Information

    • 7323-4123-90
    • 2-Way F L-Type (BK)

Pin

Wire Color

Circuit Number

Function

1

RD/BK

2

Battery Positive Voltage

2

RD/BK

2

Battery Positive Voltage