GM Service Manual Online
For 1990-2009 cars only

Object Number: 399920  Size: MF

Left Bussed Electrical Center (LBEC) Fuse Application

Important:: Numbers shown are to reference position only - component not marked.

Fuse/Circuit Breaker

Rating

Description

HVAC 1 Fuse #1

10A

HVAC Control Module, Mode Door Motors/Actuators

IGN 3 Fuse #2

10A

Memory Seat Module, LH and RH Heated Seat Switch

BRAKE Fuse #3

10A

Electronic Brake Control Module (EBCM)

HTR A/C Fuse #4

25A

Blower Motor (all except high speed)

IGN 0 Fuse #5

10A

Automatic Transmission, Instrument Cluster, Vehicle Control Module (VCM)/Powertrain Control Module (PCM)

CRUISE Fuse #6

10A

Cruise Control Module, Cruise Control Switch, Instrument Cluster, Body Control Module (BCM)

4WD Fuse #7

15A

Auxiliary Battery Relay, Front Axle Actuator/Switch, Automatic Transfer (ATC) Control Module, Vehicle Control Module (VCM)

TURN Fuse #8

20A

Feeds LT Turn and RT Turn fuses - turn signals

WS WIPER Fuse #12

25A

Windshield Wiper, Windshield Washer Pump

SEO IGN Fuse #13

10A

Selectable Ride

ILLUM Fuse #14

10A

Instrument Cluster, Instrument Panel Switches (backlit)

IGN 1 Fuse #15

10A

Body Control Module (BCM), Instrument Cluster, Automatic Day-Night

SEO ACCY Fuse #16

10A

Body Builder Provision

CRANK Fuse #17

10A

Starter Relay

AIR BAG Fuse #18

15A

Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Instrument Panel Module Switch

MIR/LOCK Fuse #19

3A

Power Mirrors, Memory Seat Switch, Power Door Lock Relays

SEATS (CB) #20

25A

Power Seats, Memory Seats (LH and RH)

DR LOCKS Fuse #21

20A

Power Door Lock Actuators

LOCK Fuse #22

15A

Power Door Locks (Actuators)

INT PK Fuse #24

10A

Park Lamp Relay Bypass (w/Manual Park Lamp Switch use)

UNLOCK Fuse #25

15A

Power Door Locks (Actuators)

PWR WDO (CB) #27

25A

Power Windows (Uplevel Vehicle)

RDO I Fuse #29

10A

Radio (Base Vehicle)

UNLOCK JMPR (Relay/Fuse)

30A

Power Door Locks (non-Keyless Entry)


Object Number: 400222  Size: MF

Underhood Bussed Electrical Center (UBEC) Fuse Application

Important:: Numbers shown are to reference position only - component not marked.

Fuse/Circuit Breaker

Rating

Description

STUD 1 Fuse #1

40A

Trailer Wiring

ABS Fuse #2

60A

Brake Pressure Modulator Valve (Pump)

IGN A Fuse #3

40A

Starter Relay, Ignition Switch-IGN 1, TURN, SEO IGN Fuses

AIR Fuse #4

30A

Secondary Air Injection Reaction Pump

RAP Fuse #5

50A

Rap Relay, MIR/LOCK DR LOCK Fuses and SEATS Circuit Breaker

IGN B Fuse #6

50A

Ignition Switch-Rap Relay, Wiper/Washer and SEO ACCY Fuses

RAP 2 Fuse #7

--

Not Used

STUD 2 Fuse #8

30A

Body Wiring Provisions, Trailer Wiring

TRL R TRN 9

10A

Trailer Turn and Stop

TRL L TRN Fuse #10

10A

Trailer Turn

INJ B Fuse #11

15A

Fuel Injectors 2, 4, 6, and 8, Ignition Coils, Engine Shutoff Solenoid and Sensor-Diesel

PARK LP Fuse #12

30A

Park Lamp Relay, Headlamp and Panel Dimmer Switch-Park Lamps

FRT HVAC Fuse #13

30A

Blower Motor (High Speed)

STOP LPS Fuse #14

20A

VEH STOP and CHMSL Fuses, Trailer Wiring (LH, RH Turn and Stop Lamp)

ECM 1 Fuse #15

10A

Vehicle Control Module (VCM)/Powertrain Control Module (PCM)-(from IGN 1 Relay)

CHMSL Fuse #16

10A

Center High Mounted Stop Lamp

VEH STOP Fuse #17

10A

Vehicle Stop Lamps

TRL B/U Fuse #19

10A

Trailer Backup Lamps

INJA Fuse #20

15A

Fuel Injectors 1, 3, 5, and 7, Ignition Coils, Glow Plug Module, Fuel Heat, Water in Fuel (WIF) Sensor, Wastegate Solenoid

RR HVAC Fuse #21

--

Not Used

VEH B/U Fuse #22

15A

Vehicle Backup Lamps

ENG 1 Fuse #23

10A

Mass Air Flow (MAF) Sensor, Camshaft Position (CMP) Sensor, Evaporator Emission (EVAP) Canister Vent Valve, Evaporative Emission (EVAP) C Purge Valve

ETC Fuse #24

--

Not Used

IGN E Fuse #25

10A

A/C Compressor Clutch Relay, DRL Relay, Rear Defog Relay, Secondary Injection Reaction Pump Relay

B/U LP Fuse #26

25A

Backup Lamps, BTSI

ATC Fuse #27

20A

Automatic Transfer Case (ATC) Control Module, Encoder Motor

RR PRK Fuse #28

10A

RR Park Lamps

ECM B Fuse #29

20A

Fuel Pump Relay, Vehicle Control Module (VCM)/Powertrain Control Module (PCM)

O2 A Fuse #30

15A

Heated Oxygen Sensors

O2 B Fuse #31

15A

Heated Oxygen Sensors

LR PRK Fuse #32

10A

LR Park Lamps

RR DEFOG Fuse #33

30A

Rear Window Defogger

TRL PRK Fuse #34

15A

Trailer Park

PRIME #35

--

Fuel Pump Prime Port

RT HDLP Fuse #36

15A

RH Headlamps (Hi and Low)

HTD MIR Fuse #37

10A

Heated Outside Mirrors

LT HDLP Fuse #38

15A

LH Headlamps (Hi and Low)

A/C Fuse #39

10A

A/C Compressor Clutch

AUX PWR Fuse #40

20A

Auxiliary Power Outlets

SEO 2 Fuse #41

30A

Roof Beacon and Relay, Full Feature Seat - LH and RH

SEO 1 Fuse #42

15A

Roof Beacon Switch, Cellular Phone Wiring Provisions

DRL Fuse #43

10A

Daytime Running Lamps (DRL)

FOG LPS Fuse #44

15A

Fog Lamps

RADIO Fuse #45

15A

Radio and Instrument Cluster

CIGAR Fuse #46

15A

Data Link Connector, Cigar Lighter

RT TURN Fuse #47

10A

RH Turn Signals

BTSI Fuse #48

10A

Brake Transmission Shift Interlock

LT TURN Fuse #49

10A

LH Turn Signals

FR PRK Fuse #50

10A

Front Park Lamps

W/W Pump Fuse #51

15A

Windsheild Washer Pump

IGN C Fuse #52

20A

Ignition Switch, Crank, IGN 0 Fuses

RDO AMP Fuse #53

--

Not Used

HAZ LP Fuse #54

20A

Hazard Lamps

EXP LPS Fuse #55

10A

Not Used

HORN Fuse #56

15A

Horn/Horn Relay

CTSY LP Fuse #57

15A

Inadvertent Power Relay (Courtesy Lamps)

RR WPR Fuse #58

--

Not Used

TBC Fuse #59

10A

Body Control Module

Figure 1:

Mid Bussed Electrical Center (MBEC)


Object Number: 399923  Size: MF
Figure 2:

Right Bussed Electrical Center (RBEC)


Object Number: 399924  Size: MF