GM Service Manual Online
For 1990-2009 cars only
Table 1: LH Underhood Fuse Block
Table 2: RH Underhood Fuse Block
Table 3: Underhood Fuse Block and Underhood Fuse/Relay Center
Table 4: Underhood Relay Center
Table 5: Rear Compartment Fuse Block
Table 6: Rear Compartment Relay Center 1
Table 7: Rear Compartment Relay Center 2
Table 8: Rear Compartment Relay Center 3
Table 9: Rear Compartment Relay Center 4

LH Underhood Fuse Block


Object Number: 421087  Size: MF

LH Underhood Fuse Block

Fuse/Relay/Circuit Breaker

Rating

Description

BODY 1 Fuse (1)

60 A

ANTENNA Fuse, RSS Fuse, CONVENC Fuse, BATT Fuse, PARK LAMPS Relay

BODY 2 Fuse (2)

60 A

ELC Circuit Breaker, PULLDOWN Fuse, HTD SEAT L Fuse, HTD SEAT R Fuse, REAR DEFOG Relay

BODY 3 Fuse (3)

50 A

CONTROLLED POWER Relay, CONTROLLED POWER BACKUP Relay, COMFORT Fuse

INADVERT Fuse (4)

50 A

INADVERTENT POWER Relay, Blower Motor

LAMPS Fuse (5)

60 A

HDLPS Fuse, HAZARD Fuse, STOP Fuse, MIRROR Fuse, DRL Fuse, FOG Fuse

IGN 1 Fuse (6)

50 A

IGNITION 1 Relay, WIPERS Fuse

WINDOWS Circuit Breaker (7)

30 A

ACCESSORY TIME DELAY Relay

SEAT Circuit Breaker (8)

30 A

HORN Relay, LH/RH Seat Module, LH/RH Seat Switch, Lumbar Relays, Memory Seat Module, LH Lumbar Massage Module

RH Underhood Fuse Block


Object Number: 338419  Size: MF

RH Underhood Fuse Block

Fuse/Relay/Circuit Breaker

Rating

Description

BATT 3 Fuse (1)

30 A

Ignition Switch

BATT 2 Fuse (2)

30 A

Ignition Switch

IGN 1 Fuse (3)

40 A

IGNITION 1 Relay

BATT 1 Fuse (4)

50 A

THEFT DETERRENT Relay

BRAKES Fuse (5)

50 A

Electronic Brake Control Module (EBCM)

COOL FANS Fuse (6)

50 A

ENGINE COOLING FAN Relay 1, ENGINE COOLING FAN Relay 3

Underhood Fuse Block and Underhood Fuse/Relay Center


Object Number: 616735  Size: MF

Underhood Fuse Block and Underhood Fuse/Relay Center

Fuse/Relay/Circuit Breaker

Rating

Description

CNR LP Fuse

20 A

Turn/Hazard Switch

INT LPS Fuse

10 A

Rear Compartment Lamp, Door Courtesy Lamps, COURTESY Relay, Vanity Mirror, Garage Door Opener, Courtesy/Reading Lamps

CIG LTR 1 Fuse

20 A

Cigar Lighters

L HDLP LO Fuse

10 A

LH Low Beam Headlamp

R HDLP LO Fuse

10 A

RH Low Beam Headlamp

L HDLP HI Fuse

10 A

LH High Beam Headlamp

R HDLP HI Fuse

10 A

RH High Beam Headlamp

FOG Fuse

10 A

FOG LAMP Relay

HDLPS Fuse

20 A

HEADLAMP Relay

HAZARD Fuse

20 A

Hazard Flasher

STOP Fuse

20 A

Stoplamp/AT Shift Lock Control Switch

MIRROR Fuse

10 A

Memory Mirror Module, Power Mirror Switch, DLC, Headlamp Dimmer Switch, INADVERTENT POWER Relay

DRL Fuse

10 A

DRL Relay

IGN 0 - ENG Fuse

10 A

Powertrain Control Module (PCM)

CRANK Fuse

10 A

PCM

ABS Fuse

10 A

Electronic Brake Control Module (EBCM)

IGN 1 Fuse

10 A

CONTROLLED POWER BACKUP Relay, Evaporative Emissions Canister Vent Valve, IGNITION 1 Relay, DRL Relay, FOG LAMP Relay, REAR FOG LAMP Relay

WIPERS Fuse

30 A

ACCESSORY Relay

A/C COMP Relay

--

A/C Clutch, A/C CLUTCH Relay

A/C COMP Fuse

10 A

A/C Compressor Relay, ENGINE COOLING FAN Relays 1,2,3

PCM (BAT) Fuse

10 A

Powertrain Control Module (PCM)

PARK/REV Fuse

10 A

REVERSE Relay, PARK Relay

ECS Fuse

10 A

PCM, EGR Valve, EVAP Canister Purge Valve, IGNITION 1 Relay, MAF Sensor, Transaxle

PCM (IGN) Fuse

10 A

PCM

DIS Fuse

20 A

Ignition Control Module

FUEL PUMP Relay

--

Fuel Tank Unit, PCM

CRUISE Fuse

10 A

PARK Relay, A/C Low Pressure Switch, PSP Switch, Cruise Control Module

INJ Fuse

10 A

Fuel Injectors 1,4,6,7

INJ Fuse

10 A

Fuel Injectors 2,3,5,8

FUEL PUMP Fuse

20 A

FUEL PUMP Relay

OXY SEN 1 Fuse

10 A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

OXY SEN 2 Fuse

10 A

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 3, Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Underhood Relay Center


Object Number: 616321  Size: SF

Underhood Relay Center

Fuse/Relay/Circuit Breaker

Rating

Description

1 - DRL Relay

--

Body Control Module (PZM), LH High Beam Headlamp

2 - HORN Relay

--

PZM, Horn Switch, Horns

3 - ACCESSORY Relay

--

Windshield Wiper Switch

4 - Hi/Lo Beam Relay

--

PZM, Headlamp Fuses in the Underhood Fuse Block

5 - FOG LPS Relay

--

PZM, Fog Lamps

6 - HEADLPS Relay

--

PZM, Hi/Lo Beam Relay, Instrument Cluster (IPC), Headlamp Switch

Rear Compartment Fuse Block


Object Number: 338424  Size: SF

Rear Compartment Fuse Block

Fuse/Relay/Circuit Breaker

Rating

Description

RLY IGN 1 Fuse

10 A

Body Control Module (PZM), ABS/TCC Switch, Cruise Control Switch, Instrument Cluster

SIR Fuse

20 A

LH/RH Inflatable Restraint Side Impact Sensing Module, Inflatable Restraint Sensing and Diagnostic Module

ELC Fuse

10 A

Automatic Level Control Sensor, ELC Relay

TURN Fuse

20 A

Turn Signal Flasher

CONSOLE Fuse

10 A

Cellular Telephone Handset, Rear Blower Motor, Heated Seat Switches

RSS Fuse

10 A

Continuously Variable Road Sensing Suspension Module

IGN 0 - BODY Fuse

10 A

ELC Relay, Electronic PRNDL, PZM, Heater and A/C Programmer, Instrument Cluster, Rear Defogger Relay, Climate Control

COMFORT Fuse

10 A

PZM, Heater and A/C Programmer, Controlled Power Relay, Remote Function Actuator Module, Compact Disc Player

AMP Fuse

30 A

Radio Amplifier, Bose® Relays

PZM Fuse

10 A

PZM

RADIO/PHONE Fuse

10 A

Cellular Telephone Module, High/Low Beam Headlamp Relay, Fuel Door Release Relay, Trunk Release Relay, Accessory Time Delay Relay, Radio, Radio Interface Module

CLUSTER Fuse

20 A

Instrument Cluster, Steering Wheel Control Switch

ACC Fuse

10 A

Accessory Relay, PZM, Inside Rear View Mirror, Outside Moisture Sensor

HTD BACKLT Fuse

30 A

Rear Defogger

HTD MIR Fuse

10 A

LH/RH Outside Mirror

HTD SEAT R Fuse

10 A

RH Heated Seat Module

HTD SEAT L Fuse

10 A

LH Heated Seat Module

PULLDOWN Fuse

20 A

Rear Compartment Lid Pulldown Motor

ANTENNA Fuse

20 A

Power Antenna Relay

RSS Fuse

20 A

RTD Body Relay

CONVENC Fuse

20 A

LH/RH Center Door Release Relay, LH Front Door Unlock Relay, Trunk Release Relay, Power Door Lock Relay, Fuel Door Release Relay

BATT Fuse

10 A

LH/RH Lumbar Switch, LH/RH Seat Belt Retractor Actuator, Memory Seat Module

RSS Fuse

10 A

Continuously Variable Road Sensing Suspension (CVRSS) Module

RT PARK Fuse

10 A

Headlamp, License Lamp, RH Side Marker Lamp, RH Tail/Turn Lamp, RH Tail Lamp, RH Tail/Stop Lamp, RH Front Park/Turn Lamp, Hazard Position Lamp Deactivation Relay, Rear Fog Lamps Relay, Headlamp Switch, RH Tail/Stop/Turn Lamp

LT PARK Fuse

10 A

Underhood Lamp, License Lamp, LH Side Marker Lamp, LH Tail/Turn Lamp, LH Tail Lamp, LH Tail/Stop Lamp, LH Front Park/Turn Lamp, Hazard Position Lamp Deactivation Relay, LH Tail/Stop/Turn Lamp

Rear Compartment Relay Center 1


Object Number: 616288  Size: SF

Rear Compartment Relay Center 1

Fuse/Relay/Circuit Breaker

Rating

Description

1 - Bose® RH Relay

--

Right Speakers

2 - Bose® LH Relay

--

Left Speakers

3 - CONTROLLED POWER Relay

--

Body Control Module (PZM), RADIO/PHONE Fuse in the Rear Compartment Fuse Block

Rear Compartment Relay Center 2


Object Number: 616316  Size: SF

Rear Compartment Relay Center 2

Fuse/Relay/Circuit Breaker

Rating

Description

1 - COURTESY LP Relay

--

Body Control Module (PZM), Courtesy Lamps, Footwell Lamps, Header Lamp Switches

2 - PARK LP Relay

--

PZM, Headlight Switch, PARK Fuses in the Rear Compartment Fuse Block

3 - ELC Relay

--

Automatic Level Control Compressor, CVRSS Module

4 - FUEL DOOR REL Relay

--

PZM, Fuel Door Release Solenoid

5 - CONT PWR BKUP Relay

--

CONTROLLED POWER Relay in Relay Center 1

6 - REAR DEFOG Relay

--

PZM, HTD MIR and HTD BKLT Fuses in the Rear Compartment Fuse Block

Rear Compartment Relay Center 3


Object Number: 616317  Size: SF

Rear Compartment Relay Center 3

Fuse/Relay/Circuit Breaker

Rating

Description

1 - IGN 1Relay

--

SIR and RLY IGN1 Fuses in the Rear Compartment Fuse Block

2 - TRUNK REL Relay

--

Body Control Module (PZM), Rear Compartment Lid Release Solenoid

3 - LT DOOR UNLOCK Relay

--

PZM, Power Door Lock Relay, LH Front Door Lock Actuator

Rear Compartment Relay Center 4


Object Number: 616318  Size: SF

Rear Compartment Relay Center 4

Fuse/Relay/Circuit Breaker

Rating

Description

1 - REVERSE Relay

--

Body Control Module (PZM), Backup Lamps

2 - RTD Relay

--

CVRSS Module

3 - PARK Relay

--

PZM, Stoplamp/AT Shift Lock Control Switch