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

8A-201-8

--

9.186

A/C Enable Relay

Underhood Fuse-Relay Center

8A-201-45

--

9.227

A/C High Pressure Cut-Off Switch

Rear of A/C Compressor

8A-201-8

--

9.172

A/C Low Pressure Cut-Off Switch

Top of A/C Receiver Dryer

8A-201-10

--

9.275

Auto Transmission (2WD)

Behind Engine

8A-201-24

8A-202-24

4.003

Auto Transmission (AWD)

Behind Engine

8A-201-26

8A-202-24

4.003

Bank #1 Heated Oxygen Sensor (HO2S) #1

Left front Exhaust Y-Pipe

8A-201-23

8A-202-30

3.682

Bank #1 Heated Oxygen Sensor (HO2S) #2

Right front Exhaust Y-Pipe, closest to Catalytic Converter

8A-201-23

8A-202-30

3.682

Bank #1 Heated Oxygen Sensor (HO2S) #3

Exhaust Y-Pipe, between Catalytic Converter and Muffler

8A-201-23

8A-202-30

3.682

Bank #2 Heated Oxygen Sensor (HO2S) #1

Right front Exhaust Y-Pipe closest to Exhaust Manifold

8A-201-23

8A-202-30

3.682

Camshaft Position (CMP) Sensor

Side of Distributor

8A-201-8

--

2.383

Convenience Center

Left of I/P Fuse Block, by left Kick Panel

8A-201-18

--

--

Crankshaft Position (CKP) Sensor

Behind and to the right of Engine Crankshaft Pulley

8A-201-6

--

2.383

Cruise Control Module

Center front of Dash. left of Windshield Wiper Module

8A-201-10

8A-202-11

3.887

Data Link Connector (DLC)

Left side of Dash

8A-201-21

8A-202-12

--

Distributor

To rear of Engine

8A-201-8

--

2.383

Distributor Ignition Control Module

Top of Engine front of Coil

8A-201-7

8A-202-31

2.838

Electronic Brake Control Module (EBCM)

Left front side of Frame, Left of Transmission

8A-201-24

8A-202-10

4.730

C2

--

8A-201-24

8A-202-10

4.634

Engine Coolant Temperature (ECT) Sensor

Side of Linear EGR Valve Solenoid

8A-201-6

--

1.150

Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Top of Engine, next to Map Sensor

8A-201-7

--

3.130

Evaporative Emission (EVAP) Canister Vent Valve

Undercarriage, left of the Canister Purge Canister

8A-201-24

--

3.130

Fuel Injector #1

Top LH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Injector #2

Top RH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Injector #3

Top LH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Injector #4

Top RH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Injector #5

Top LH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Injector #6

Top RH Front of Engine, under Manifold Cover

8A-201-8

--

3.300

Fuel Pump

Inside Fuel Tank

--

8A-202-29

3.107

Fuel Pump Relay

Underhood Fuse-Relay Center

8A-201-45

--

3.900

Fuel Level Sender

Inside Fuel Tank

--

--

3.107

Fuel/Sender Gauge Module

Left side of Dash, on the Data Link Connector bracket

8A-201-21

8A-202-14

3.107

HVAC Control Module

Center of Dash

8A-201-19

8A-202-32

--

C2

--

8A-201-19

8A-202-32

--

Idle Air Control (IAC) Valve

Top of Engine, left rear of Throttle Body

8A-201-8

8A-202-31

3.820

Ignition Coil

Top of Engine, behind Generator

8A-201-7

--

2.383

Instrument Cluster

Left side of Dash

8A-201-19

8A-202-17

9.735

Intake Manifold Air Temperature (IAT) Sensor

Top of Air Intake Duct

8A-201-10

--

3.682

I/P Fuse Block

Lower left side of Dash, next to LH Kick Panel

8A-201-18

--

2.483

Knock Sensor

Left rear of Distributor on Engine Block

8A-201-8

--

2.383

Linear EGR Valve Solenoid

Top of Engine, Left of Generator

8A-201-6

8A-202-33

3.670

Manifold Absolute Pressure (MAP) Sensor

Top of engine, near Ignition Coil

8A-201-7

--

3.682

Mass Airflow (MAF) Sensor

Front of Air Intake Duct

8A-201-10

--

3.682

Oil Pressure Switch and Sender

Rear of Engine, left of Distributor

8A-201-8

--

--

Overhead Console

Front center of Headliner

8A-201-32

--

--

C1

--

8A-201-32

--

9.

Radio

Center of Dash

8A-201-19

8A-202

21.480

C2

--

8A-201-19

8A-202

21.480

TCC/Stoplamp Switch Assembly

Above Brake Pedal

8A-201-26

8A-202-34

2.447

Throttle Position (TP) Sensor

Top of Engine, left side of throttle Body

8A-201-8

--

3.682

Underhood Fuse-Relay Center (2WD)

Left side front of Dash, near Battery

8A-201-0

--

--

Underhood Fuse-Relay Center (AWD)

Left side front of Dash, near Battery

8A-201-0

--

--

Vehicle Control Module (VCM)

Left side of Engine Compartment, side of Battery

8A-201-4

6-Engine Controls

3.670

C1

--

8A-201-4

6-Engine Controls

3.670

C2

--

8A-201-4

6-Engine Controls

3.670

C3

--

8A-201-4

6-Engine Controls

3.670

C4

--

8A-201-4

6-Engine Controls

3.670

C5

--

8A-201-4

6-Engine Controls

3.670

Vehicle Speed Sensor (VSS) (2WD)

Rear of Transmission

8A-201-25

--

4.710

Vehicle Speed Sensor (VSS) (AWD)

Rear of Transmission

8A-201-26

--

4.710

C100

LH side front of Dash

8A-201-2

8A-202-0

--

C104

LH side front of Dash under Convenience Center

8A-201-2

8A-202-29

--

C207

Convenience Center

8A-201-47

8A-202-30

--

C304

Left Side of Transfer Case (AWD only)

8A-201-26

--

--

D101

Underhood Fuse-Relay Center

8A-201-45

--

--

P100

LH side front of Dash, left of Bulkhead

8A-201-2

--

--

G104

Right side front of Dash, above Blower Motor

8A-201-10

--

--

G105

Thermostat Housing

8A-201-6

--

--

G106

Left rear of Engine Block, next to Knock Sensor

8A-201-8

--

--

G107

Left rear of Engine Block, next to Knock Sensor

8A-201-8

--

--

G108

Right side of left Frame Rail, next to Canister

8A-201-24

--

--

G110

Left side of front of Dash, above Battery

8A-201-13

--

--

S109

Engine Harness, 24.5 cm from Underhood Fuse-Relay Center

8A-201-9

--

--

S111

Engine Harness, 5 cm from Underhood Fuse-Relay Center Breakout, toward C100

8A-201-9

--

--

S112

Engine Harness, 10.5 cm from C100 Breakout, toward Engine

8A-201-9

--

--

S114

Engine Harness, 17 cm from Underhood Fuse-Relay Center Breakout, toward C100

8A-201-9

--

--

S115

Engine Harness, 4 cm from Underhood Fuse-Relay Center Breakout, toward Engine

8A-201-9

--

--

S116

Engine Harness, 18 cm from Mass Airflow Sensor Breakout, toward Engine

8A-201-10

--

--

S117

Engine Harness, 2.5 cm from A/C Low Pressure Cut-Off Switch Breakout, toward Engine

8A-201-10

--

--

S118

Engine Harness, 6 cm from Linear EGR Valve Solenoid Breakout, toward Underhood Fuse-Relay Center

8A-201-10

--

--

S119

Engine Harness, 9 cm from A/C Low Pressure Cut-Off Switch Breakout, toward Engine

8A-201-10

--

--

S120

Engine Harness, 6 cm from Generator Breakout, toward rear of Engine

8A-201-7

--

--

S122

Engine Harness, 12.5 cm from Generator Breakout, toward rear of Engine

8A-201-7

--

--

S123

Engine Harness, 6.5 cm from Fuel Injector Harness Breakout, toward front of Engine

8A-201-7

--

--

S124

Engine Harness, 15 cm from Oil Pressure Switch Breakout, toward front of Engine

8A-201-8

--

--

S126

Engine Harness, 6 cm from Transmission Breakout, toward front of Engine

8A-201-24

--

--

S127

Engine Harness, 25.5 cm from Electronic Brake Control Module (EBCM) breakout, toward EBCM

8A-201-13

--

--

S130

Front of Dash, 32 cm from forward Lamp Harness Breakout, toward Windshield Washer Motor

8A-201-13

--

--

S204

I/P Harness, 9.5 cm from C201 Connector, toward C100

8A-201-13

--

--

S206

I/P Harness, 3.5 cm from C201 Connector, toward C100

8A-201-13

--

--

S210

I/P Harness, 3.5 cm from C201 Connector, toward Cluster

8A-201-17

--

--

S213

I/P Harness, 4 cm from Headlamp Switch Breakout, toward Switch Connector

8A-201-13

--

--

S218

I/P Harness, 4 cm from Cluster Breakout, toward Cluster Connector

8A-201-13

--

--

S224

I/P Harness, 14.5 cm from Heater A/C Control breakout, toward Cluster

8A-201-15

--

--