GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View (8A Cell 201, Page #)

Figure #

Connector End View

7X Crankshaft Position (CKP) Sensor

Lower rear of engine

4

25

--

24X Crankshaft Position (CKP) Sensor

Right hand side of engine, at end of crankshaft, behind harmonic balancer

12

33

--

A/C Compressor Relay

Underhood Electrical Center #1

6

20

202-26

A/C Refrigerant Pressure Sensor

Right hand side of engine compartment, below accumulator

2

7

--

Camshaft Position (CMP) Sensor

Top left hand side of engine, on cylinder head

2

5

--

Data Link Connector (DLC)

On bottom of Instrument Panel, right of steering column

39

123

Refer to Data Link Connector (DLC) in Electrical Diagnosis

Electronic Traction Control (Second Gear Start) Switch

Left hand side of Instrument Panel

18

55

202-31

Engine Coolant Temperature (ECT) Sensor

Left hand side top of engine

3

10

--

Engine Oil level Lamp

Upper left hand side of Instrument

Cluster

Refer to Instrument Cluster in Electrical Diagnosis

--

--

Engine Oil Level Switch

Front Center of Engine Oil Pan

22

70

--

Evaporative Canister Purge Solenoid

Top front of engine, on Intake Manifold

2

5

--

Evaporative Purge Vacuum Switch

Top, front, center of engine

2

5

--

Exhaust Gas Recirculation (EGR) Valve

Upper left hand side of engine, mounted to Throttle Body Adapter

9

26

202-33

Fuel Injectors (Cylinders 2, 4, and 6)

Top of engine, mounted to fuel rail, at each cylinder intake port

--

--

--

Fuel Injectors (Cylinders 1, 3 and 5)

Top of engine, mounted to fuel rail, at each cylinder intake port, below the upper intake plenum

--

--

--

Fuel Pressure Regulator

Mounted on the Fuel Injector Rail, top, left hand side of engine

--

--

--

Fuel Pump Motor

Mounted inside fuel tank

--

--

--

Fuel Pump Relay

Underhood Electrical Center #1

6

20

202-26

Generator

Lower rear right hand side of engine

1

4

202-32

Heated Oxygen Sensor 1 (HO2S 1)

Rear of engine, in exhaust manifold

9

26

202-32

Heated Oxygen Sensor 2 (HO2S 2)

In exhaust system, behind Catalytic Converter

10

28

202-32

Idle Air Control Valve (IAC)

Top of engine, front of Throttle Body Assembly

9

26

202-32

Ignition Control Module (ICM)

Right hand front of engine

3

9

202-24

Intake Air Temperature (IAT) Sensor

Left hand front of engine compartment, on air intake duct

9

26

--

Bank 1 Knock Sensor (KS)

Front of engine, above starter

1

4

--

Bank 2 Knock Sensor (KS)

Lower right hand rear of engine, below exhaust manifold

12

33

--

Malfunction Indicator Lamp (MIL)

Lower right hand side of Instrument Panel

Refer to Instrument Cluster in Electrical Diagnosis

--

--

Manifold Absolute Pressure (MAP) Sensor

Top rear of engine, on Throttle Body Adapter

9

26

--

Mass Air Flow (MAF) Sensor

Left hand front of engine compartment, in air cleaner duct

9

26

--

Powertrain Control Module (PCM)

Right hand side of engine compartment, forward of strut tower

PCM 80-Way Blue Connector C1 Details

PCM 80-Way Clear Connector C2 Details

--

--

Powertrain Control Module Ground

Upper and Lower Transaxle Stud

0

2

--

Positive Crankcase Ventilation Valve

Upper left hand, rear of engine, mounted in Rocker Arm Cover

--

--

--

Primary Cooling Fan

Left hand side behind radiator

6

19

--

Primary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

Secondary Cooling Fan

Right hand side, behind radiator

6

19

--

Secondary Air Injection Pump

Behind right hand front fender, forward of splashguard

35

112

--

Secondary Air Injection Pump Relay

Underhood Electrical Center #1

6

20

202-26

Secondary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

SMCC II Cruise Control Module

Left hand side of engine compartment, near strut tower

13

38

Refer to Cruise Control in Electrical Diagnosis

Theft Deterrent Module

Behind right hand side of Instrument Panel, above Instrument Panel compartment

24

73

Refer to Theft Deterrent System in Electrical Diagnosis

Throttle Body

Mounted to the Upper Intake Manifold, top, left hand side of engine

--

--

--

Throttle Position (TP) Sensor

Top of engine, on Throttle Body Assembly

7

21

--

Torque Converter Clutch Connector

Lower left hand side of engine compartment

1

2

202-2

Transaxle Range Switch / Park Neutral Position (PNP) Switch

Rear left hand side of engine compartment, mounted to top of transaxle

0

2

202-36

Underhood Electrical Center #1

Right hand side of engine compartment, forward of strut tower

6

20

202-26

Vehicle Speed Sensor (VSS) / Transaxle Output Speed Sensor (TOSS)

Right hand of engine, on Transaxle

1

4

--