GM Service Manual Online
For 1990-2009 cars only

4.3L Engine Controls Component Location Table

Name

Location

Locator View

Connector End View

Group No.

A/C Compressor Clutch

Front of A/C compressor

Harness Routing Views in Wiring Systems

Engine Controls Connector End Views

9.186

A/C Compressor Clutch Diode (D101)

Underhood fuse-relay center

Electrical Center Identification Views in Wiring Systems

--

9.186

A/C Enable Relay

Underhood fuse-relay center

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

9.227

A/C High Pressure Cut-Off Switch

Rear of A/C compressor

Harness Routing Views in Wiring Systems

HVAC Connector End Views in HVAC Systems with A/C - Manual

9.172

A/C Low Pressure Cut-Off Switch

Top of A/C receiver dryer

Harness Routing Views in Wiring Systems

HVAC Connector End Views in HVAC Systems with A/C - Manual

9.275

Active Transfer Case (ATC) Module

Rear of the transmission

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

 

Automatic Transmission (A4WD)

Behind engine

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

4.003

Automatic Transmission (RWD)

Behind engine

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

4.003

Bank #1 Heated Oxygen Sensor (HO2S) #1

Left front exhaust Y-pipe

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Bank #1 Heated Oxygen Sensor (HO2S) #3

Exhaust Y-pipe, between catalytic converter and muffler

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Bank #2 Heated Oxygen Sensor (HO2S) #1

Right front exhaust Y-pipe closest to exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Brake Pedal Position (BPP) Switch

Above brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

2.447

Camshaft Position (CMP) Sensor

Side of distributor

Engine Controls Component Views

Engine Controls Connector End Views

2.383

Compass and Temperature Display Module

Front of overhead console towards front of vehicle

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Convenience Center

Left of I/P fuse block, by left kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Crankshaft Position (CKP) Sensor

Behind and to the right of engine crankshaft pulley

Power and Grounding Component Views in Wiring Systems

Engine Controls Connector End Views

2.383

Cruise Control Module

Center front of the bulkhead. right of windshield wiper module

HVAC Component Views in HVAC Systems with A/C - Manual

Cruise Control Connector End Views in Cruise Control

3.887

Data Link Connector (DLC)

Left side of dash

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

--

Distributor

To rear of engine

Harness Routing Views in Wiring Systems

--

2.383

EGR Valve Solenoid

Top of engine, left of generator

Engine Controls Component Views

Engine Controls Connector End Views

3.670

Electronic Brake Control Module (EBCM)

Left front side of frame, left of transmission

Harness Routing Views in Wiring Systems

Antilock Brake System Connector End Views in ABS/ Traction Control

4.730

Engine Coolant Temperature (ECT) Sensor

Top front of engine, under thermostat housing

Engine Controls Component Views

Engine Controls Connector End Views

1.150

Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Top of engine, right of throttle body

Engine Controls Component Views

Engine Controls Connector End Views

3.130

Evaporative Emission (EVAP) Canister Vent Valve

Under the vehicle, on the frame rail by the fuel filter

Engine Controls Component Views

Engine Controls Connector End Views

3.130

Fuel Injector #1

Top LH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Injector #2

Top RH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Injector #3

Top LH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Injector #4

Top RH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Injector #5

Top LH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Injector #6

Top RH front of engine, under manifold cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

3.300

Fuel Pump and Sender

Inside fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

3.107

Fuel Pump Relay

Underhood fuse-relay center

Electrical Center Identification Views in Wiring Systems

--

3.900

HVAC Control Module

Center of dash

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

--

Idle Air Control (IAC) Valve

Top of engine, left rear of throttle body

Engine Controls Component Views

Engine Controls Connector End Views

3.820

Ignition Coil

Top of engine, behind generator

Engine Controls Component Views

Engine Controls Connector End Views

2.383

Ignition Control Module

Top of engine front of coil

Harness Routing Views in Wiring Systems

Engine Controls Connector End Views

2.838

Instrument Cluster

Left side of dash

HVAC Component Views in HVAC Systems with A/C - Manual

Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console

9.735

Intake Air Temperature (IAT) Sensor

Top of air intake duct

Engine Controls Component Views

Engine Controls Connector End Views

3.682

I/P Fuse Block

Lower left side of dash, next to LH kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

2.483

Knock Sensor

Left rear of distributor on engine block

Engine Controls Component Views

Engine Controls Connector End Views

2.383

Manifold Absolute Pressure (MAP) Sensor

Top of engine, near ignition coil

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Mass Airflow (MAF) Sensor

Front of air intake duct

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Oil Pressure Switch and Sender

Rear of engine, left of distributor

Engine Controls Component Views

Engine Controls Connector End Views

--

Overhead Console

Front center of headliner

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

--

Passlockā„¢ Module

Right side of instrument cluster, behind air duct

SIR Component Views in SIR

Theft Deterrent System Connector End Views in Theft Deterrent

--

Radio

Center of dash

HVAC Component Views in HVAC Systems with A/C - Manual

Entertainment Connector End Views in Entertainment

21.480

Throttle Position (TP) Sensor

Top of engine, left side of throttle body

Engine Controls Component Views

Engine Controls Connector End Views

3.682

Underhood Fuse-Relay Center (A4WD)

Left side front of dash, near battery

Electrical Center Identification Views in Wiring Systems

--

--

Underhood Fuse-Relay Center (RWD)

Left side front of dash, near battery

Electrical Center Identification Views in Wiring Systems

--

--

Vehicle Control Module (VCM)

Left side of engine compartment, side of battery

Engine Controls Component Views

VCM Connector End Views in Engine Controls

3.670

Vehicle Speed Sensor (VSS) (A4WD)

Rear of transmission

Engine Controls Component Views

Engine Controls Connector End Views

4.710

Vehicle Speed Sensor (VSS) (RWD)

Rear of transmission

Engine Controls Component Views

Engine Controls Connector End Views

4.710

C100

LH side front of dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

--

C103

Top of engine

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

--

C105

LH Side front of dash under Underhood Fuse/ Relay Center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

--

C200

LH Kick Panel near C100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

--

C223

Rear of Convenience Center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

--

D101

Underhood fuse-relay center

Electrical Center Identification Views in Wiring Systems

--

--

P100

LH side front of dash, left of bulkhead

Harness Routing Views in Wiring Systems

--

--

G104

Right side front of dash, above blower motor

Harness Routing Views in Wiring Systems

--

--

G105

Thermostat housing

Power and Grounding Component Views in Wiring Systems

--

--

G106

Left rear of engine block, next to knock sensor

Harness Routing Views in Wiring Systems

--

--

G107

Left rear of engine block, next to knock sensor

Harness Routing Views in Wiring Systems

--

--

G110

Left side of front of dash, above battery

Harness Routing Views in Wiring Systems

--

--

G302

Right side of left frame rail, next to evaporative emission canister

Harness Routing Views in Wiring Systems

--

--

S109

Engine harness, 28.5 cm (11.2 in) from underhood fuse-relay center

Harness Routing Views in Wiring Systems

--

--

S111

Engine harness, 17 cm (6.7 in) from underhood fuse-relay center breakout, toward underhood fuse-relay center

Harness Routing Views in Wiring Systems

--

--

S112

Engine harness, 48.5 cm (19.1 in) from C100 breakout, toward engine

Harness Routing Views in Wiring Systems

--

--

S113

Engine harness, 10.5 cm (4.1 in) from underhood fuse-relay center breakout, toward underhood fuse-relay center

Harness Routing Views in Wiring Systems

--

--

S114

Engine harness, 4 cm (1.6 in) from underhood fuse-relay center breakout, toward underhood fuse-relay center

Harness Routing Views in Wiring Systems

--

--

S116

Engine harness, 18 cm (7.1 in) from mass airflow sensor breakout, toward engine

Harness Routing Views in Wiring Systems

--

--

S117

Engine harness, 2.5 cm (1 in) from A/C low pressure cut-off switch breakout, toward engine

Harness Routing Views in Wiring Systems

--

--

S118

Engine harness, 6 cm (2.4 in) from linear EGR valve solenoid breakout, toward underhood fuse-relay center

Harness Routing Views in Wiring Systems

--

--

S119

Engine harness, 9 cm (3.5 in) from A/C low pressure cut-off switch breakout, toward engine

Harness Routing Views in Wiring Systems

--

--

S120

Engine harness, 6 cm (2.4 in) from linear EGR valve solenoid breakout, toward rear of engine

Harness Routing Views in Wiring Systems

--

--

S122

Engine harness, 12.5 cm (4.9 in) from linear EGR valve solenoid breakout, toward rear of engine

Harness Routing Views in Wiring Systems

--

--

S123

Engine harness, 6.5 cm (2.6 in) from fuel Injector harness breakout, toward front of engine

Harness Routing Views in Wiring Systems

--

--

S124

Engine Harness, 15 cm (5.9 in) from oil pressure switch breakout, toward C100

Harness Routing Views in Wiring Systems

--

--

S126

Engine harness, 6.5 cm (2.6 in) from knock sensor connector breakout, toward front of engine

Harness Routing Views in Wiring Systems

--

--

S127

Engine harness, 4 cm (1.6 in) from electronic brake control module (EBCM) breakout, toward EBCM

Harness Routing Views in Wiring Systems

--

--

S130

Front of dash, 32 cm (12.6 in) from forward lamp harness breakout, toward windshield washer motor

Harness Routing Views in Wiring Systems

--

--

S151

Engine harness, 26 cm (10.2 in) from vehicle control module C1 connector

Harness Routing Views in Wiring Systems

--

--

S152

Engine harness, 5 cm (2 in) from vehicle control module C1 connector breakout, towards C100

Harness Routing Views in Wiring Systems

--

--

S153

Engine harness, 26.5 cm (10.4 in) from vehicle control module C1 connector

Harness Routing Views in Wiring Systems

--

--

S204

I/P harness, 9.5 cm (3.7 in) from C201 connector, toward C100

Harness Routing Views in Wiring Systems

--

--

S206

I/P harness, 7 cm (2.8 in) from C100 connector, toward right side of dash

Harness Routing Views in Wiring Systems

--

--

S210

I/P harness, 4 cm (1.6 in) from C201 connector, toward cluster

Harness Routing Views in Wiring Systems

--

--

S213

I/P harness, 4 cm (1.6 in) from headlamp switch breakout, toward headlamp switch connector

Harness Routing Views in Wiring Systems

--

--

S218

I/P harness, 4 cm (1.6 in) from instrument cluster breakout, toward instrument cluster connector

Harness Routing Views in Wiring Systems

--

--

S224

I/P harness, 10 cm (3.9 in) from headlamp switch connector breakout, toward right side of dash

Harness Routing Views in Wiring Systems

--

--

S233

I/P harness, 6.5 cm (2.6 in) from data link connector breakout, toward data link connector

Harness Routing Views in Wiring Systems

--

--

S333

Engine harness, 29 cm (11.4 in) from bank #1 heated oxygen sensor (HO2S) #3 connector breakout, toward vehicle speed sensor connector

Harness Routing Views in Wiring Systems

--

--