GM Service Manual Online
For 1990-2009 cars only

Underhood MaxiFuse® Block


Object Number: 386781  Size: MF

Fuse/Circuit Breaker

Rating

Description

ABS MOT Fuse 1

40 A

Electronic Brake and Traction Control Module (EBTCM)

ABS SOLENOID Fuse 2

40 A

Electronic Brake and Traction Control Module (EBTCM)

RR DEFOG Fuse 3

40 A

HTD BK LITE Relay

PWR WINDOW Circuit Breaker 5

30 A

Driver Door Module (DDM), Passenger Door Module (PDM), RAP Relay, Rear Door Module (RDM)

AUX OT LT Fuse 6

30 A

AUXOT LT Fuse (25 A)

Underhood Junction Block


Object Number: 386783  Size: SF

Fuse/Circuit Breaker

Rating

Description

SBM LCM Fuse 2

10 A

Body Control Module (SBM), Instrument Cluster, Lamp Control Module (LCM), Remote Function Actuator (RFA) Module

T/SIG Fuse 3

10 A

Turn Signal/Hazard Switch

OXY SEN Fuse 4

10 A

Oxygen Sensors

SIR Fuse 5

10 A

Inflatable Restraint Sensing and Diagnostic Module (SDM)

PCM Fuse 6

10 A

Mass Air Flow (MAF) Sensor, Powertrain Control Module (PCM)

A/C CLU Fuse 7

10 A

A/C Clutch Relay, Boost Control Solenoid

IGNFD Fuse 8

10 A

1-2 Shift Solenoid (1-2 SS) Valve, 2-3 Shift Solenoid (2-3 SS) Valve, ABS/TCC Switch, Evaporative Emissions (EVAP) Purge Valve, Torque Converter Clutch (TCC PWM SOL) Valve

HORN Fuse 9

30 A

Horn Relay

INJR Fuse 12

10 A

Fuel Injectors

C3I Fuse 13

10 A

Ignition Control Module

HDHIBMR Fuse 14

10 A

Right High Beam Headlamp

HDHIBML Fuse 16

10 A

Left High Beam Headlamp

HDLOBMR Fuse 18

10 A

Right Low Beam Headlamp

HDLOBML Fuse 19

10 A

Left Low Beam Headlamp

STOP Fuse 20

20 A

Stoplamp/BTSI Switch

F/PUMP Fuse 21

20 A

F/PMP Relay

RUN/CRK Fuse 22

15 A

Ignition Switch

PCM Fuse 23

10 A

Powertrain Control Module (PCM), PASS-Key® III Module

LP PK Fuse 24

25 A

B/U LP Fuse (10A), Perim LP Relay

HZDT/SG Fuse 25

15 A

Turn Signal Flasher

IGN Relay 28

--

A/C CLU Fuse (10 A), C3I Fuse (10 A), IGNFD Fuse (10 A), INJR Fuse (10 A), OXY SEN Fuse (10 A), PCM Fuse (10 A), SBM LCM Fuse (10 A), SIR Fuse (10 A), T/SIG Fuse (10 A)

HORN Relay 29

--

Horns

COOLFAN 1 Relay 30

--

Left Engine Cooling Fan Motor

STARTER Relay 31

--

Starter Solenoid

COOLFAN S/P Relay 33

--

Left/Right Engine Cooling Fan Motor

COOLFAN 2 Relay 34

--

Right Engine Cooling Fan Relay

A/C CLU Relay 35

--

A/C Clutch

F/PMP Relay 36

--

Fuel Pump

BATT 1 Fuse 37

60 A

C/LTR Fuse (15 A), CD/PH Fuse (10 A), CSTR/SBM Fuse (10 A), DDM Fuse (10 A), HTDST L Fuse (10 A), PDM Fuse (10 A), RDM Fuse (10 A), RDO Fuse (10 A), SBD Fuse (10 A), TRK REL Fuse (15 A)

BLO MOT Fuse 38

30 A

Blower Control Module

COOL FAN 1 Fuse 39

30 A

Cooling Fan Relay 1

HDLP Fuse 40

30 A

Lamp Control Module (LCM)

BATT 2 Fuse 41

60 A

C/LTRL Fuse (15 A), C/LTRR Fuse (15 A), ELC Circuit Breaker (30 A), HTDST R Fuse (10 A), MEM/RFA Fuse (10 A), PWR Seat Circuit Breaker (25 A)

IGN Fuse 42

40 A

ACCY Relay, IGN 3 Relay, RUN Fuse (10 A)

STARTER Fuse 43

30 A

Starter Relay

COOL FAN 2 Fuse 44

30 A

Cooling Fan Relay 2

IP Junction Block


Object Number: 386780  Size: LF

Fuse/Circuit Breaker

Rating

Description

SBM Fuse

10 A

Body Control Module (SBM)

PDM Fuse

10 A

Passenger Door Module (PDM)

A/C Fuse

10 A

Mode Actuator, Air Inlet Actuator, Driver Air Mix Actuator, Passenger Air Mix Actuator

ABS Fuse

10 A

EBTCM

IGN SEN Fuse

10 A

Coolant Level Switch, Automatic Day-Night Mirror, Garage Door Opener (w/UG1), Heated Seat Modules (w/W01), Memory Seat Module (MSM)(w/A43)

ELC Fuse

10 A

ELC Relay

HVAC Fuse

10 A

Instrument Cluster, Heater and A/C Control Assembly, Heater and A/C Programmer

CR CONT Fuse

10 A

Cruise Control Module, Multi-Function Lever

HUD Fuse

10 A

Head-Up Display (HUD) Module, Head-Up Display (HUD) Switch (w/UV6)

CTSR/SBM Fuse

10 A

Body Control Module (SBM), Instrument Cluster, Heater and A/C Programmer

LP PK L Fuse

10 A

Body Control Module (SBM), Underhood Lamp, Left Side Marker Lamps, Left Front Park/Turn Lamp, Left Tail/Signal Lamp, Left Tail/Stop Lamp

LP PK R Fuse

15 A

Remote Function Actuator (RFA) Module, License Lamps, Tail/Stop Lamps, Tail/Signal Lamps, Right Side Marker Lamps, Right Front Park/Turn Signal Lamp

RUN Fuse

10 A

Ignition Switch

WSW Fuse

30 A

Windshield Wiper Motor

WSW/RFA Fuse

10 A

Outside Moisture Sensor, Windshield Wiper/Washer Switch, Remote Function Actuator (RFA) Module

B/U LP Fuse

10 A

Perim LP Relay

PERIM LP Relay

--

Backup Lights, Automatic Day-Night Mirrors

ACCY Relay

--

WSW Fuse (30 A), WSW/RFA Fuse (10 A)

IGN 3 Relay

--

A/C Fuse (10 A), ABS Fuse (10 A), CR CONT Fuse (10 A), ELC Fuse (10 A), HVAC Fuse (10 A), HUD Fuse (10 A), IGN SEN Fuse (10 A)

Rear Junction Block


Object Number: 386779  Size: MF

Fuse/Circuit Breaker

Rating

Description

HTD BK LITE Relay 1

--

Defogger

RAP Relay 2

--

RDO/PH Fuse (5 A), SUNROOF Fuse (20 A)

TRUNK LID RELEASE Relay 3

--

Rear Compartment Lid Release Actuator

ELC Relay 4

--

Automatic Level Control Compressor

PWR SEAT Circuit Breaker 5

25 A

Seat Switches, Lumbar Switches (w/W01), Memory Seat Module (MSM) (w/A43)

ELC Circuit Breaker 6

30 A

ELC Relay, Automatic Level Control Sensor, Automatic Level Control Compressor

CRK Fuse 7

5 A

Body Control Module (SBM), THFT 1 Relay

AUXOTLT Fuse 8

25 A

Cigar Lighter (w/D07 or w/W01), Rear Cigar Lighter (w/D07 or w/W01), Auxiliary Power Outlet (w/o D07 or W01)

PCM/CRU Fuse 9

10 A

Instrument Cluster, Powertrain Control Module (PCM), PASS-Key® III Module

SBM Fuse 10

10 A

Body Control Module (SBM)

RDO/PH Fuse 11

5 A

Cellular Telephone Handset, Radio, Steering Column Switch Fuse (2A)

SUNROOF Fuse 12

20 A

Sunroof Control Module

CD/PH Fuse 14

10 A

Cellular Telephone Handset, Cellular Telephone Module, Compact Disc (CD) Player

DDM Fuse 15

10 A

Driver Door Module (DDM)

RDO Fuse 17

10 A

Radio, Bose® Radio Amplifier

HTDSTL Fuse 18

10 A

Left Heated Seat Module

RDM Fuse 19

10 A

Rear Door Module (RDM)

TRK REL Fuse 20

15 A

Data Link Connector (DLC), Fuel Door Release Solenoid, Trunk Lid Release Relay

C/LTR Fuse 22

15 A

IP Cigar Lighter

HTDSTR Fuse 25

10 A

Right Heated Seat Module

C/LTRR Fuse 26

15 A

Right Rear Door Cigar Lighter

C/LTRL Fuse 27

15 A

Left Rear Door Cigar Lighter

MEM/RFA Fuse 28

10 A

Memory Seat Module (MSM), Remote Function Actuator (RFA) Module, Left Lumbar Switch (w/W01), Left Seat Switch (w/W01)