GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Group No.

Vehicle Control Module (VCM)

Engine Compartment, LH.

201-42,43 Fig. 43,44

--

3.670

Data Link Connector (DLC)

Under LH side of I/P.

201-69 Fig. 70

202-87

--

I/P Fuse Block

Lower LH side of I/P.

201-64 Fig. 65

202-90

--

Underhood Fuse Relay Center

LH rear of Engine Compartment, left Fender.

201-43 FIg. 44

202-92

--

Fuel Pump Prime Connector

I/P Harness, approx. 20 cm into the Fuse-Relay Center.

--

--

--

Fuel Injectors # 1 Through #6 VIN (W)

Top of Intake Manifold.

201-16 Fig. 17

202-86

3.300

Idle Air Control (IAC) Valve Motor

Top LH side of Engine.

201-16 Fig. 17

202-67

3.820

Linear Exhaust Gas Recirculation (EGR) Valve VIN (W)

Top front of Engine.

201-16 Fig. 17

202-69

3.670

Canister Purge Solenoid

RH Center on Intake Manifold.

--

--

3.140

Ignition Coil Driver

Top RH side of Engine.

201-14 Fig 15

202-67

--

Fuel Pump Relay

Located in Underhood Fuse Relay Center.

201-43 Fig. 44

202-92,94,97

--

Manifold Absolute Pressure (MAP) Sensor VIN (W)

Top RH side of Engine.

201-15 Fig. 16

202-62

3.682

Heated Oxygen Sensors #1 through #4

In Exhaust Pipe, in front and back of Catalytic Converters.

201-33 Fig. 34

202-66,67

3.682

Throttle Position (TP) Sensor

LH top of Engine.

201-16 Fig. 17

202-60

3.682

Engine Coolant Temperature (ECT) Sensor

Top front of Engine.

201-14 Fig. 15

202-58

3.682

Mass Air Flow (MAF) Sensor

Part of Air Intake Duct, front top of Engine.

201-20 Fig. 21

202-59

3.682

Vehicle Speed Sensor (VSS)

LH Rear side of Transmission.

201-31,32 Fig. 32,33

202-58

3.682

Camshaft Position Sensor

Part of Distributor, rear top of Engine.

201-23 Fig. 24

202-60

--

Input Speed Sensor, Transmission (4L60E Automatic Transmission)

LH side of Transmission, near front.

201-32 Fig. 33

202-58

--

Knock Sensor VIN (W)

Top rear of Engine.

201-15 Fig. 16

202-45

2.383

Evaporative Emission Purge Solenoid Vacuum Switch

RH side of Engine

201-16 Fig. 17

202-48

3.140

Intake Air Temperature (IAT) Sensor

In Air Intake Duct, front of Engine compartment

201-20 Fig. 21

202-58

3.682

Crankshaft Position (CKP) Sensor

Lower RH front portion of Engine block, near Crankshaft.

201-14 Fig. 15

202-60

2.383

Distributor

Rear top of Engine.

201-20 Fig. 20

--

--

Ignition Coil

Top RH of Engine.

201-14 Fig. 15

202-62

--

Fuel Pump Oil Pressure Switch and Sender

Rear Top Center of Engine, behind Distributor

201-15,23 Fig. 16,24

202-60

1.800

A/C Compressor Low Pressure cutoff Switch

In low pressure refrigerant line.

210-46 Fig. 47

202-54

--

A/C High Pressure cutoff Switch

On rear portion of A/C compressor

201-19,29 Fig. 20,30

202-55

--

Brake Pressure Differential Switch

Part of (EBCM), LH frame rail near center of vehicle.

201-36 Fig. 37

202-51

--

Wheel Speed Sensor, LH front

At LH front wheel.

202-35 Fig. 36

202-49

--

Wheel Speed Sensor, RH front

At RH front wheel

202-35 Fig. 36

202-49

--