GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Engine Wiring Harness Junction Block 1 (Label)


Object Number: 587769  Size: LF
Figure 2:

Engine Wiring Harness Junction Block 1 (Top View)


Object Number: 587770  Size: LF
Figure 3:

Engine Wiring Harness Junction Block 1 (Bottom View w/ RPO NF2)


Object Number: 587772  Size: LF
Figure 4:

Engine Wiring Harness Junction Block 1 (Bottom View w/ RPO NC1)


Object Number: 613413  Size: LF

Engine Wiring Harness Junction Block 1 Fuse Application Table

Fuse/Circuit Breaker

Rating

Description

1

30 AMP

FAN CONT 1 Relay

2

60 AMP

PCM BAT and R.CPMT REL Fuses

3

30 AMP

Secondary Air Injection Pump Relay

4

60 AMP

Power Seats Circuit Breaker D, Fuses 1, 5, 10 14, 19, 23, 28, 32, 37, 41,

R/CMPT REL

15 AMP

Park/Neutral Position Switch

PCM BAT

20 AMP

FUEL PUMP, FAN CONT 1, FAN CONT 2 Relays and Powertrain Control Module (PCM)

AIR PUMP

10 AMP

Secondary Air Injection Pump Relay and Secondary Air Injection Reaction (AIR) Pump Motor

A/C CONT

10 AMP

A/C CMPR Relay

TRANS

10 AMP

1-2 Shift Solenoid (1-2 SS) Valve, 2-3 Shift Solenoid (2-3 SS) Valve and Torque Converter Clutch Pulse Width Modulated Solenoid (TCC PWN SOL) Valve

F/INJN

15 AMP

Fuel Injectors

PCM IGN

15 AMP

Mass Air Flow (MAF) Sensor, Heated Oxygen Sensors (HO2S) 1 and 2, Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

ELEK IGN

15 AMP

Ignition Control Module (ICM)

Figure 5:

Engine Wiring Harness Junction Block 2 Label


Object Number: 613843  Size: LF
Figure 6:

Engine Wiring Harness Junction Block 2 (Top View)


Object Number: 613847  Size: LF
Figure 7:

Engine Wiring Harness Junction Block 2 (Bottom View)


Object Number: 613851  Size: LF

Engine Wiring Harness Junction Block 2 Fuse Application Table

Fuse/Circuit Breaker

Rating

Description

ABS

60 AMP

Electronic Brake Control Relay (ABS)

HD LPS

20 AMP

Headlamp Switch

IGN SW 1

50 AMP

Ignition Switch, Theft Deterrent Relay, Power Windows Circuit Breaker C, Fuses 4, 7, 11, 12, 13, 20, 21, 22, 29, 30, 33, 39, 38 and 42

FAN 3

25 AMP

Fan 3 Relay

PARK LPS

15 AMP

Headlamp Switch

HORN

15 AMP

Horn Relay

ABS

20 AMP

LF Brake Solenoid Valve and RF Brake Solenoid Valve

Figure 8:

Engine Wiring Harness Junction Block 2 Label


Object Number: 613843  Size: LF
Figure 9:

Engine Wiring Harness Junction Block 2 (Top View)


Object Number: 613847  Size: LF
Figure 10:

Engine Wiring Harness Junction Block 2 (Bottom View)


Object Number: 613851  Size: LF

Instrument Panel Fuse Block Fuse Application Table

Fuse/Circuit Breaker

Rating

Description

Power Windows Circuit Breaker

20 AMP

Window Switch, LF

Power Seats Circuit Breaker

20 AMP

Driver seat Adjuster Switch

Fuse 1 (Cigar Lighter)

15 AMP

Cigar Lighter

Fuse 4 (HVAC)

15 AMP

LH Electric Actuator, RH Electric Actuator, Heater-A/C Control Rear Window Defogger Relay, Vacuum/Electric Solenoid and Daytime Running Lamps (DRL) Control Module

Fuse 5 (Hazard Flasher)

15 AMP

Turn Signal Switch

Fuse 7 (Starter Relay)

5 AMP

Park/Neutral Position Switch

Fuse 10 (IP Electronic Battery)

15 AMP

Seat Belt/Ignition Key/Lamps Alarm, Electronic Brake Control Module (EBCM),Theft Deterrent Module, Radio, Data Link Connector (DLC)

Fuse 11 (Power Accessory 2 Sunroof)

20 AMP

Not Used

Fuse 12 (Anti Theft/PCM)

10 AMP

IGN SYST Relay, Powertrain Control Module (PCM), Theft Deterrent System

Fuse 13 (ABS)

5 AMP

w/ RPO JM4 Electronic Brake Control Relay (ABS) and w/ RPO J41 Not Used

Fuse 14 (HVAC BLower Motor)

20 AMP

Blower Motor Relay

Fuse 19 (Power Accessory)

10 AMP

LF Door Lock Switch, Outside Remote Control Rearview Mirror Switch, RF Door Lock Switch, Rear Compartment Courtesy Lamp

Fuse 21 (Air Bag)

15 AMP

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Fuse 22 (Cruise Control)

15 AMP

Cruise Control Release Switch, Turn Signal Lever and Cruise Control Module

Fuse 23 (Stop Lamp)

15 AMP

Stop Lamp Switch

Fuse 28 (CTSY Lamps)

15 AMP

Istrument Panel Compartment Lamp, RH Sunshade Illuminated Mirror (Optional), Inside Rearview Mirror and Dome Lamp

Fuse 29 (Wiper)

25 AMP

Windshield Wiper/ Washer Switch

Fuse 30 (Turn Signal)

10 AMP

Turn Signal Switch

Fuse 32 (Power Locks)

20 AMP

Door Locks, Remote Control Door Lock Receiver (RCDLR)

Fuse 33 (DRL MDL)

10 AMP

Daytime Running Lamps (DRL) Control Module

Fuse 37 (Rear Defog)

30 AMP

Rear Window Defogger Relay

Fuse 38 (Radio)

10 AMP

Radio, Power Drop Connector

Fuse 39 (IP Electroonic Ignition Feed)

10 AMP

Headlamp Switch, Remote Control Door Lock Receiver (RCDLR), Stop Lamp Switch, Instrument Panel and Seat Belt/Ignition Key/Lamps Alarm

Fuse 41 (Power Drop)

15 AMP

Power Drop Connector

Fuse 42 (EVAP SOL)

5 AMP

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

Figure 11:

Instrument Panel Fuse Block Label


Object Number: 587784  Size: LF
Figure 12:

Instrument Panel Fuse Block (Top View)


Object Number: 587783  Size: LF
Figure 13:

Instrument Panel Fuse Block (Bottom View)


Object Number: 587782  Size: LF
Figure 14:

Front Left of Engine Compartment


Object Number: 572432  Size: LF
(1)G100
(2)Engine Wiring Junction Block 2
(3)Battery Positive Thermial
(4)Battery Negitive Thermial
(5)G113
Figure 15:

Right Front Side of Engine Compartment (RPO LG8)


Object Number: 587352  Size: LF
(1)Engine Wiring Junction Block 1
Figure 16:

Right Side of Instrument Panel


Object Number: 587353  Size: LF
(1)Instrument Panel Fuse Block
Figure 17:

Behind Right Side of Instrument Panel


Object Number: 593549  Size: LF
(1)Power Drop Connector
Figure 18:

Lower Center of Instrument Panel


Object Number: 587362  Size: LF
(1)C240 (Inline from IP to Ashtray Jumper)
(2)Ashtray
(3)Cigar Lighter