GM Service Manual Online
For 1990-2009 cars only
Connector 1: Fuse Block - Instrument Panel C3 (W/Sunroof)
Connector 2: Fuse Block - Instrument Panel C3 (W/O Sunroof)
Connector 3: Fuse Block - Instrument Panel C4
Connector 4: Fuse Block - Instrument Panel C5
Connector 5: Fuse Block - Instrument Panel C6
Connector 6: Fuse Block - Instrument Panel C7
Connector 7: Fuse Block - Instrument Panel C8
Connector 8: Fuse Block - Instrument Panel C9
Connector 9: Fuse Block - Instrument Panel C10
Connector 10: Fuse Block - Instrument Panel C11
Connector 11: Fuse Block - Instrument Panel C12
Connector 12: Fuse Block - Instrument Panel C13
Connector 13: Junction Block - Instrument Panel Right C1
Connector 14: Junction Block - Instrument Panel Right C2
Connector 15: Junction Block - Instrument Panel Right C3

Underhood Fuse Block


Object Number: 787265  Size: MF
(1)AC Compressor Relay
(2)H-LP Relay
(3)Not Used
(4)Not Used
(5)Not Used
(6)C100
(7)DIM Relay
(8)Spare Fuse
(9)Horn Relay
(10)Fan 2 Relay
(11)Fan 1 Relay
(12)C1-Battery Voltage
(13)Not Used
(14)H-Main Fuse 30A
(15)Alt-S Fuse 5A
(16)EFI Fuse 15A
(17)HAZ Fuse 10A
(18)HORN Fuse 10A
(19)C2
(20)DOME Fuse 15A
(21)MAIN Fuse 30A
(22)AMP Fuse 25A (If Equipped)
(23)Not Used
(24)ALT Fuse 100A
(25)ABS 2 Fuse 40A
(26)RDI Fuse 40A
(27)ABS 1 Fuse 30A
(28)Not Used
(29)FR FOG Fuse 15A
(30)H-LP RH Fuse 15A
(31)H-LP LH 15A
(32)EFI Relay
(33)FR FOG Relay

Instrument Panel Fuse Block (Bottom)


Object Number: 787267  Size: LF
(1)TAIL Fuse 15A
(2)OBD Fuse 7.5A
(3)Not Used
(4)Not Used
(5)WIPER Fuse 25A
(6)AM 2 Fuse 15A
(7)STOP Fuse 15A
(8)DOOR Fuse 25A
(9)AM 1 Fuse 25A
(10)Not Used
(11)ECU-IG Fuse 10A
(12)RR WIPER Fuse 15A
(13)AC Fuse 10A
(14)INV Fuse 15A
(15)P/POINT Fuse 15A
(16)ECU-B Fuse 10A
(17)CIG Fuse 15A
(18)GAUGE Fuse 10A
(19)WASHER Fuse 15A
(20)BLOWER/DEF Idle-Up Fuse 10A
(21)C13
(22)HEATER Fuse 40A
(23)DEF Fuse 30A
(24)POWER Fuse 30A
(25)C12
(26)Multifunction Alarm Module
(27)C11

Instrument Panel Fuse Block (Top)


Object Number: 787266  Size: MF
(1)C1
(2)C3
(3)C4
(4)C5
(5)Hazard Flasher
(6)C10
(7)C7
(8)C/OPN Relay
(9)C2
(10)C9
(11)C8
(12)C6
(13)P/W Relay
(14)IG 1 Relay
(15)DEF Relay
(16)Noise Filter
(17)ST Relay

ABS Relay Block


Object Number: 1464261  Size: MF
(1)ABS Cut Relay
(2)ABS MTR Relay

Fuse Block - Instrument Panel C3 (W/Sunroof)


Object Number: 335024  Size: CH

Connector Part Information

  • OEM: 90980-10797
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C3 (W/Sunroof)

Pin

Wire Color

Function

1

WH/BK

Ground - Sunroof Switch

2

BK

Ignition Positive Voltage - Sunroof Relay

3

BK

Battery Positive Voltage - Sunroof

4

BU/WH

Battery Positive Voltage - Dome Lamp

5

--

Not Used

6

RD/YE

Ground - Dome Lamp

Fuse Block - Instrument Panel C3 (W/O Sunroof)


Object Number: 335024  Size: CH

Connector Part Information

  • OEM: 90980-10797
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C3 (W/O Sunroof)

Pin

Wire Color

Function

1

BK

Ground - Map Lamp

2

--

Not Used

3

BK

Battery Positive Voltage - Map Lamp

4

BU/WH

Battery Positive Voltage - Dome Lamp

5

--

Not Used

6

RD/YE

Ground - Dome Lamp

Fuse Block - Instrument Panel C4


Object Number: 820226  Size: CH

Connector Part Information

  • OEM: 90980-12104
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C4

Pin

Wire Color

Function

1

GN/YE

Right Front Turn Lamp Supply Voltage

2

GN

Park/Turn Lamp Supply Lamp

3

BU/WH

A/C Compressor Relay Supply Voltage

4

--

Not Used

5

GN/WH

Stop Lamp Supply Voltage

6

--

Not Used

7

BU/WH

Battery Positive Voltage

8

GN/BK

Left Front Turn Lamp Supply Voltage

9

BU

Ignition Positive Voltage - Washer

10

--

Not Used

11

BU

Ignition Positive Voltage - Wiper Motor

12

BK/WH

Ignition Positive Voltage

13

BK/WH

Ignition Positive Voltage

14

RD/WH

Battery Positive Voltage - Stop Lamp

15-16

--

Not Used

Fuse Block - Instrument Panel C5


Object Number: 820228  Size: CH

Connector Part Information

  • OEM: 90980-12106
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C5

Pin

Wire Color

Function

1

RD/WH

Driver Door Open Indicator Signal

2

GN

Ignition Positive Voltage - Tail Lamps/License Plate Lamps

3-5

--

Not Used

6

RD/BK

Ignition Positive Voltage - Backup Lamps

7

GN/WH

Battery Positive Voltage - Stop Lamps

8

BU/RD

Remote Control Door Lock Receiver

9

BU

Rear Tailgate Lock Signal

10

GN/YE

Keyless Entry Program Circuit

11

BU/WH

Ignition Positive Voltage - Rear Wiper Relay

12

GN/YE

Ignition Positive Voltage - Right Rear Turn Lamp

13

BU/YE

Battery Positive Voltage - Keyless Entry

14

RD/BK

Courtesy Switch Signal - Left Rear

15

RD/YE

Courtesy Switch Signal - Right Rear

16

RD

Courtesy Switch Signal - Tail Gate/Glass Hatch

17

GN/BK

Ignition Positive Voltage - Left Rear Turn Lamp

18

BK

Ignition Positive Voltage - Left Rear Power Window Switch

19

BK/RD

Ignition Positive Voltage - Fuel Pump

20

RD

Rear Tailgate Unlock Signal

Fuse Block - Instrument Panel C6


Object Number: 334980  Size: CH

Connector Part Information

  • OEM: 90980-11604
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C6

Pin

Wire Color

Function

1

--

Not Used

2

BK/YE

Ignition Positive Voltage - Ignition Switch

3

--

Not Used

4

WH/BK

Ground

5

BU

Ignition Positive Voltage - Rear Defogger Switch

6

BU/RD

Accessory Positive Voltage - Ignition Switch

7

BK

Ignition Positive Voltage

8

GY

Ignition Positive Voltage - Right Instrument Panel Junction Block

9

BK/WH

Ignition Positive Voltage

10-11

--

Not Used

12

WH

Battery Positive Voltage - Ignition Switch

13

--

Not Used

Fuse Block - Instrument Panel C7


Object Number: 899505  Size: CH

Connector Part Information

  • OEM: 90980-11529
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C7

Pin

Wire Color

Function

1

GN/RD

PCM Circuit Opening Relay Control

2

RD/WH

Ignition Positive Voltage

3

RD/BK

Dome Lamp Control

4

BK

Ignition Positive Voltage

5

GN/YE

Right Turn Indicator Supply Voltage

6

GN/YE

Flasher relay Voltage Output

7

BK

Ignition Positive Voltage

Fuse Block - Instrument Panel C8


Object Number: 334469  Size: CH

Connector Part Information

  • OEM: 90980-11542
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C8

Pin

Wire Color

Function

1

RD/BK

Battery Positive Voltage

2-4

--

Not Used

5

GN/YE

Right Turn Lamp Supply Voltage

6

BU

Battery Positive Voltage

7

GN/WH

Battery Positive Voltage - Tail Lamp Relay

8

--

Not Used

9

GN/WH

Battery Positive Voltage - Accessory Power Control Module

10

WH/BK

Ground

11

GN/BK

Left Turn Lamp Supply Voltage

12

GN/BK

Battery Positive Voltage - Left Turn Indicator

13

GN/BK

Battery Positive Voltage - Flasher Relay

Fuse Block - Instrument Panel C9


Object Number: 820098  Size: CH

Connector Part Information

  • OEM: 90980-11231
  • Service: N/A
  • Description: (YE)

Fuse Block - Instrument Panel C9

Pin

Wire Color

Function

1

PK/BK

Diagnostic Request

2

BU/RD

Serial Data Line

3

WH/BK

Ground - Inflatable Restraint Sensing and Diagnostic Module (SDM)

4

--

Not Used

5

BK/YE

Air Bag Indicator Control

6

--

Not Used

7

YE

Fuel Pump Cutoff Signal

8

BK/OG

Ignition Positive Voltage - Inflatable Restraint Sensing and Diagnostic Module (SDM)

9

--

Not Used

10

WH/BK

Ground - Inflatable Restraint Sensing and Diagnostic Module (SDM)

Fuse Block - Instrument Panel C10


Object Number: 334470  Size: CH

Connector Part Information

  • OEM: 90980-10799
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C10

Pin

Wire Color

Function

1

BK/YE

Air Bag Indicator Control - Inflatable Restraint Sensing and Diagnostic Module

2-3

--

Not Used

4

PK/BK

Diagnostic Request - Inflatable Restraint Sensing and Diagnostic Module

5

BU/RD

Serial Data Line - Inflatable Restraint Sensing and Diagnostic Module

6

YE

Fuel Pump Cutoff Signal

7

RD/BK

Battery Positive Voltage - On Board Diagnostics

8

BU/BK

Ground - Multifunction Alarm Module

Fuse Block - Instrument Panel C11


Object Number: 334473  Size: CH

Connector Part Information

  • OEM: 90980-10801
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C11

Pin

Wire Color

Function

1

GN/BK

Park/Turn Lamp - Left Front - Supply Voltage

2

BU

Door Lock Signal

3

RD/WH

Door Open Indicator Supply Voltage

4

RD

Door Open Indicator Supply Voltage

5

RD/BK

Door Unlock Signal

6-7

--

Not Used

8

BK/OG

Ignition Positive Voltage - Instrument Panel Cluster

9

RD/BK

Position Signal - Park Neutral Position Switch

10

RD/BK

Position Signal - Park Neutral Position Switch

Fuse Block - Instrument Panel C12


Object Number: 428545  Size: CH

Connector Part Information

  • OEM: 90980-11539
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C12

Pin

Wire Color

Function

1

GN/WH

Stop Lamp Switch Voltage

2

GN

Park Lamp Supply Voltage

3

RD/WH

Door Open Indicator Supply Voltage

4

BU/WH

Battery Positive Voltage

5

BK/WH

Ignition Positive Voltage - Ignition Switch

6

--

Not Used

7

BU

Windshield Wiper Supply Voltage

8

WH

Ignition Positive Voltage - I/P Cluster

9

GN/YE

Right Turn Lamp - Supply Voltage

10

BK

Defogger Relay Control

11

BK/WH

Ground

Fuse Block - Instrument Panel C13


Object Number: 820109  Size: CH

Connector Part Information

  • OEM: 90980-11583
  • Service: N/A
  • Description: (WH)

Fuse Block - Instrument Panel C13

Pin

Wire Color

Function

1

BK

Starter Supply Voltage

2

BK/WH

Heater Relay Supply Voltage

3

BK/RD

Battery Positive Voltage

4

BK

Rear Defogger Supply Voltage

5

BK

Heater Relay Supply Voltage

6

BK

Battery Positive Voltage - Ignition Switch Supply Voltage

Left Instrument Panel Junction Block


Object Number: 787258  Size: MF
(1)Left Instrument Panel Junction Block
(2)C3
(3)C2
(4)C1

Left Instrument Panel Junction Block Buss Bar View


Object Number: 1462356  Size: MF
(1)Left Instrument Panel Junction Block
(2)C3
(3)C2
(4)C1

Right Instrument Panel Junction Block -- Relay Side


Object Number: 785553  Size: MF
(1)Right Instrument Panel Junction Block -- Relay Side
(2)INV Relay
(3)Tail Relay
(4)P-Point Relay
(5)Heater Relay

Right Instrument Panel Junction Block -- Connector Side


Object Number: 785562  Size: MF
(1)C3
(2)C2
(3)C1
(4)Right Instrument Panel Junction Block -- Connector Side

Right Instrument Panel Junction Block Buss Bar View


Object Number: 1462343  Size: MF
(1)Left Instrument Panel Junction Block
(2)C3
(3)C2
(4)C1

Junction Block - Instrument Panel Right C1


Object Number: 334906  Size: CH

Connector Part Information

  • OEM: 90980-10875
  • Service: N/A
  • Description: (WH)

Junction Block - Instrument Panel Right C1

Pin

Wire Color

Function

1

RD/BK

Instrument Cluster Reverse Position Signal Voltage

2

RD/BK

Instrument Panel Fuse Block Reverse Position Signal Voltage

3

RD/LK

Right Instrument Panel Junction Block Reverse Position Signal Voltage

4

RD/BK

Navigation Radio Reverse Position Signal Voltage

5

--

Not Used

6

GY

P-Point Relay - Accessory Power Voltage

7

GY

Radio - Accessory Voltage

8

GY

Power Mirror Switch - Accessory Voltage

9

GY

Front Cigar Lighter Supply Voltage

10

GY

Accessory ON Voltage

11

WH/BK

Remote CD Changer Ground

12

WH/BK

P-Point Relay Switch Ground

13

WH/BK

115-Volt Power Outlet Ground

14

WH/BK

Passenger Seat Belt Switch Ground

15

WH/BK

Driver Seat Belt Switch Ground

16

WH/BK

Shift Lock Control Module Ground

17

WH/BK

Overdrive Switch Ground

18

--

Not Used

19

WH/BK

Theft Deterrent Module Ground

20

WH/BK

A/C Recirculation Switch Ground

21

WH/BK

Hazard Switch Ground

22

WH/BK

Accelerometer Ground

Junction Block - Instrument Panel Right C2


Object Number: 334908  Size: CH

Connector Part Information

  • OEM: 90980-11238
  • Service: N/A
  • Description: (WH)

Junction Block - Instrument Panel Right C2

Pin

Wire Color

Function

1

BU/RD

Brake Pressure Modulator Valve Data Link Connector Signal Circuit

2

BU/RD

Data Link Connector Signal Circuit

3

BU/RD

Power Train Control Module Data Link Connector Signal Circuit

4

BU/RD

Inflatable Restraint Sensing and Diagnostic Module Data Link Connector Signal Circuit

5

BK/WH

Ignition Positive Voltage

6

BK/WH

Cruise Control Module Ignition Positive Voltage

7

BK/WH

Shift Lock Control Ignition Positive Voltage

8

YE

Daytime Running Lamps Control Module Charge Input

9

YE

Instrument Panel Cluster Charge Indicator Signal

10

YE

Generator Signal Input

11

RD/WH

Park Brake Warning Lamp Ignition Positive Voltage

12

RD/WH

Heater Relay Ignition Positive Voltage

13-14

--

Not Used

15

RD/WH

Flasher Relay Ignition Positive Voltage

16

RD/WH

Instrument Panel Cluster Ignition Positive Voltage

17

RD/WH

115-Volt Power Outlet Switch Ignition Positive Voltage

18

RD/WH

A/C Recirculation Ignition Positive Voltage

19

RD/WH

Cruise Control Release Switch Ignition Positive Voltage

20

RD/WH

SP107 Ignition Positive Voltage

21

RD/WH

Rear Wiper Diode Ignition Positive Voltage

22

RD/WH

Ignition Supply Voltage

Junction Block - Instrument Panel Right C3


Object Number: 334904  Size: CH

Connector Part Information

  • OEM: 90980-10821
  • Service: N/A
  • Description: (WH)

Junction Block - Instrument Panel Right C3

Pin

Wire Color

Function

1

YE/BK

Multifunction Alarm Module Ground Signal

2

YE/BK

Flasher Relay Ground Signal

3

YE/BK

Hazard Switch Ground Signal

4

RD

Dimmer Switch Headlamp Ground Signal

5

RD

Headlamp Switch Headlamp Ground Signal

6

RD

Daytime Running Lamps Control Module Headlamp Ground Signal

7-9

--

Not Used

10

GN/WH

Shift Lock Control Module Brake Signal

11

GN/WH

Powertrain Control Module Brake Signal

12

--

Not Used

13

GN/WH

Stop Lamp Supply Voltage

14

BN/WH

Right Outside Rearview Mirror Switch Up Voltage

15

BN/WH

Left Outside Rearview Mirror Switch Up Voltage

16

BN/WH

Outside Rearview Mirror Switch Voltage

17

BU

Cruise Control Release Switch Drive Position Signal

18

BU

Drive Position Signal

19

--

Not Used

20

BU

Drive Position Signal