GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block - Underhood, Device Usage
Table 2: Fuse Block - Instrument Panel
Table 3: Fuse Block - Rear, Device Usage

Fuse Block - Underhood


Object Number: 1963994  Size: LF

Fuse Block - Underhood, Device Usage

No.

Device

Rating

Description

Primary Fuses

FU1

Spare Fuse

--

Not Used

FU2

Rear Defog

40A

Underhood Fuse Block: Rear Defogger Relay (R8)

FU3

ABS Motor

40A

ABS Module

FU4

Spare Fuse

--

Not Used

FU5

Batt Main 1

50A

Supply Voltage to Instrument Panel Fuse Box: Retained Accessory Power (RAP) Relay Feed (R1), SIR (F1), Trunk Release/RR Fog (F2), Door Locks (F3), Inadvertent Power/LED Dimming (F4), Power Window Circuit Breaker (B1) and Power Seat Circuit Breaker (B3)

FU6

Spare Fuse

--

Not Used

FU7

Batt Main 2

50A

Supply Voltage to Instrument Panel Fuse Box: Accessory Power (RAP) Relay Feed (R8), Courtesy Lamps (F5), Turn Signal Right (F6), Turn Signal Left (F8), Body Control Module (F9), Stop Lamps, Console Lighting (F11), Ignition Switch and Theft (F12)

FU8

Starter

40A

Starter Relay (R12)

FU9

HVAC Blower

40A

HVAC Blower Pwr Mdl

FU10

Fan 1

30A

Engine Cooling Fan Relay (R17)

FU11

Spare Fuse

--

Not Used

FU12

Fan 2

30A

Engine Cooling Fan Relay (R20)

Secondary Fuses

F1

Comm Enable

10A

Comm Enable Relay (R2)

F2

HVAC Battery

10A

HVAC Battery

F3

Backup Lamp

15A

Backup Lamp Relay (R4)

F4

Fog Lamps

15A

Fog Lamp Relay (R5)

F5

ABS Valves

25A

ABS Module (A116)

F6

Spare Fuse

--

Not Used

F7

Spare Fuse

--

Not Used

F8

Horn

15A

Horn Relay

F9

TCM

15A

Transmission Control Module (A112)

F10

Left Low Beam

10A

Headlamp - Left

F11

Spare Fuse

--

Not Used

F12

Right Low Beam

10A

Headlamp - Right

F13

Spare Fuse

--

Not Used

F14

Spare Fuse

--

Not Used

F15

Front Wipers

30A

Front Wipe/Wash Wiper Relays

F16

Spare Fuse

--

Not Used

F17

Theft Horn

10A

Alarm System

F18

Spare Fuse

--

Not Used

F19

Right High Beam

10A

Headlamp - Right

F20

Spare Fuse

--

Not Used

F21

Front Washer

15A

Washer Motor

F22

Spare Fuse

--

Not Used

F23

Left High Beam

10A

Headlamp - Left

F24

Spare Fuse

--

Not Used

F25

Reverse Lockout

15A

Reverse Lockout Solenoid (Y144)

F26

Spare Fuse

--

Not Used

F27

Spare Fuse

--

Not Used

F28

ECM 1

15A

Engine Control Module (ECM A43)

F29

Even Coils/Injectors

20A

Even Ignition Coils and Fuel Injectors

F30

Spare Fuse

--

Not Used

F31

Spare Fuse

--

Not Used

F32

Emission Dev2

15A

Engine Controls

F33

Emission Dev1

15A

Engine Controls

F34

Spare Fuse

--

Not Used

F35

Odd Coils/Injectors

20A

Odd Ignition Coils and Fuel Injectors

F36

Spare Fuse

--

Not Used

F37

Spare Fuse

--

Not Used

F38

Phone/Cruise

10A

Bluetooth Connector and Headlamp/Dimmer Switch

F39

Ignition Engine

10A

MAF, IAT, ECM (A43) and TCM

F40

AirBag

10A

Module SDM

F41

Spare Fuse

--

Not Used

F42

Right Park Lamp

10A

Park Light-Right

F43

Left Park Lamp

10A

Park Light-Left

Relays

R1

Spare Relay

--

Not Used

R2

Comm Enable

--

Comm Enable Power Relay

R3

Spare Relay

--

Not Used

R4

Backup Lamp

--

Backup Lamp Relay

R5

Fog Lamp Front

--

Front Fog Lamps Relay

R6

Headlamp Relay Low Beam

--

Headlamps Low Beam

R7

Spare Fuse

--

Not Used

R8

RR Defog

--

Rear Window Defogger

R9

Wiper High

--

Front Wiper High Speed

R10

Wiper

--

Front Wiper Low

R11

Headlamp Relay High Beam

--

Headlamps High Beam

R12

Crank

--

Crank

R13

Powertrain

--

Powertrain

R14

Ignition Main

--

Ignition Main

R15

Washer Pump

--

Washer Motor

R16

Horn

--

Horn Relay

R17

Fan 1

--

Engine Cooling Fan - Right

R18

Park Lamps

--

Park Lamp Relay

R19

Fan 2

--

Engine Cooling Fan - Left

R20

Fan 3

--

Engine Cooling Fan - Left

Fuse Block - Instrument Panel


Object Number: 1963995  Size: LF

Fuse Block - Instrument Panel

No.

Device

Rating

Description

Circuit Breakers

B1

Window Batt

20A

Front Windows

B2

Power Windows

20A

Front Window Switch

B3

Power Seats

20A

Right Power Seat

B4

Spare Fuse

--

Not Used

Secondary Fuses

F1

SIR

10A

SIR/AOS SDM

F2

Spare fuse

--

Not Used

F3

Door Locks

25A

Door Lock Relays

F4

Inadv Pwr/LED Dim

15A

Inadvertently Power Led Dim

F5

Ctsy Lights

15A

Courtesy Lights and Turn Signal Right Front

F6

Turn Signal - Right

15A

Turn Signal - Right

F7

Spare Fuse

--

Not Used

F8

Turn Signal - Left

15A

Turn Signal - Left

F9

BCM - Logic

10A

Body Control Module Power Moding

F10

Stop Lamps

15A

Stop Lamps

F11

Console Lighting

15A

Console Lighting

F12

Ignition Switch and Theft

2A

Theft Deterrent Control Module (TDCM), IGN Switch (S149)

F13

Cigar Lighter

20A

Cigar Lighter Rear

F14

Auxiliary Power Outlets

20A

Auxiliary Power Outlet

F15

Exterior Mirrors

2A

Exterior Mirrors Switch

F16

Phone/Key LK/ISRVM

10A

Phone, ISRVM and Key Lock Solenoid

F17

Spare Fuse

--

Not Used

F18

Spare Fuse

--

Not Used

F19

Spare Fuse

--

Not Used

F20

Spare Fuse

--

Not Used

F21

Spare Fuse

--

Not Used

F22

Spare Fuse

--

Not Used

F23

Strg Wheel Illum

2A

Steering Wheel Control Backlight

F24

Window Control

10A

Windows RPA Power

Relays

R1

RAP

--

Retained Accessory Power

R2

All Lock

--

All Door Lock

R3

Pass. Unlock

--

Passenger Door Unlock

R4

Spare Relay

--

Not Used

R5

Spare Relay

--

Not Used

R6

Driver Unlock

--

Drivers Door Unlock

R7

Spare Relay

--

Not Used

R8

Acc. Power

--

Accessory Power

R9

Blower

--

HVAC Blower

R10

Spare Relay

--

Not Used

R11

Spare Relay

--

Not Used

R12

Fuel Pump

--

Fuel Pump Relay

Fuse Block - Rear


Object Number: 1963996  Size: LF

Fuse Block - Rear, Device Usage

No.

Device

Rating

Description

Secondary Fuses

F1

Spare Fuse

--

Not Used

F2

Spare Fuse

--

Not Used

F3

Phone

10A

Bluetooth Module

F4

RADIO & INFOTAINMENT

15A

Audio unit (A133)

F5

Inst/Disp/RFA/DLC

10A

Interior Lights, Cluster Display Lights, Serial Data Connector, RFA module and Aux Display

F6

Spare Fuse

--

Not Used

F7

Trailer

30A

Trailer Wiring Connector

F8

Spare Fuse

--

Not Used

F9

Spare Fuse

--

Not Used

F10

ECM Batt

15A

Engine Controls

F11

RVC Sense

7.5A

Body Control Module (BCM)

F12

Fuel Pump

20A

Fuel Pump Relay (R12)

Relays

R1

Spare Relay

--

Not Used

R2

Spare Relay

--

Not Used