GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Group No.

A/C Compressor Enable Relay

Underhood fuse-relay center, LH front of engine compartment

Fig. 45

202-98

--

A/C Compressor High Pressure Cutoff Switch

On rear portion of A/C compressor

Fig. 21,26

202-58

--

A/C Compressor Low Pressure Cutout Switch

In low pressure refrigerant line

Fig. 48

202-56

--

Automatic Transmission Input Shaft Speed (A/T ISS) Sensor

LH side of transmission

Fig. 34

202-61

--

Automatic Transmission

Under center of vehicle, attached to rear of engine

Fig. 33,34

--

--

Camshaft Position (CMP) Sensor

Part of distributor, rear top of engine

--

--

--

Crankshaft Position (CKP) Sensor

Lower front engine, near crankshaft

Fig. 17

202-66

--

Cruise Control Module

Front of engine compartment, near LH fender

Fig.44

202-87

--

Data Link Connector (DLC)

Under LH side of IP

Fig. 71

202-92

--

Electronic Brake Control Module (EBCM)

LH frame rail near center of vehicle

Fig.37, 38

202-57-73

--

Engine Coolant Temperature Gauge Sensor

LH side of engine

Fig 16

202-61

--

Evaporative Emission (EVAP) Canister Purge Valve

RH side of engine

Fig.17

202-53

--

Evaporative Emission (EVAP) Canister Vacuum Switch

RH side of engine

Fig.17

202-53

--

Exhaust Gas Recirculation (EGR) Valve

Top front of engine

Fig.18

202-73

--

Fuel Injectors #1 through #6

Engine harness, in line to engine fuel injectors, top of intake manifold

Fig.18

202-91

--

Fuel Pump Switch and Engine Oil Pressure Gauge Sensor

Top rear of engine

Fig. 17,25

202-65

--

Fuel Pump (FP) and Sender 35 GAL

In fuel tank, under rear of vehicle

Fig.42

202-71

--

Fuel Pump (FP) and Sender 55 GAL

In fuel tank, under rear of vehicle

Fig.43

202-70

Fuel Pump Relay

In underhood fuse- relay center, LH front of engine compartment

Fig.45

202-98

--

Heated Oxygen Sensor, Bank 1 Sensor 1

In exhaust pipe, in front of catalytic converter

Fig.35

202-71-72

--

Heated Oxygen Sensor, Bank 1 Sensor 2

In exhaust pipe, in back of catalytic converter

Fig.35

202-71-72

--

Heated Oxygen Sensor, Bank 1 Sensor 3

In exhaust pipe, in back of catalytic converter

Fig.35

202-71-72

--

Heated Oxygen Sensor, Bank 2 Sensor 1

In exhaust pipe in front of catalytic converter

Fig.35

202-71-72

--

Heater and A/C Controller

Center Of IP

Fig.55

202-67-69

--

IP Fuse Block

At LH lower kick panel

Fig. 66

202-96

--

Idle Air Control Valve

Top LH side of engine

Fig. 18

202-72

--

Ignition Control Module

Top RH side of engine

Fig. 16

202-72

--

Ignition Coil

Top RH of engine.

Fig.16

202-67

--

Instrument Cluster

LH side of IP

Fig.51

202-95

--

Intake Air Temperature (IAT) Sensor

Part of air intake duct, front of engine compartment

Fig. 22

202-61

--

Knock Sensor

Top rear of engine

Fig.17

202-48

--

Manifold Absolute Pressure (MAP) Sensor

Top RH side of engine

Fig.17

202-67

--

Mass Air Flow (MAF) Sensor

Part of air intake duct, front top of engine

Fig.23

202-64

--

Power Steering Control Module

Below center of IP

Fig.64

202-93

--

Radio

Center of I/P

Fig.56

202-84-85

--

TCC/Stoplamp Switch

Below center of IP, near brake pedal lever

Fig.73

202-75

--

Throttle Position (TP) Sensor

LH top of engine

Fig.18

202-65

--

Underhood Fuse -Relay Center

Engine compartment, left fender

Fig.45

202-98

--

Vehicle Control Module (VCM)

Engine compartment, LH fender

Fig.44,45

--

--

Vehicle Speed Sensor (VSS)

Below LH side of IP, near steering column

Fig.33,34

202-61

--

C100

LH rear of engine compartment at bulkhead

Fig.45,66

202-0

--

C103 (M30)

LH on transmission

Fig.33

202-4

--

C103 (MT1)

LH on transmission

Fig.34

202-5

--

C105

Engine harness, RH frame rail near starter

Fig.37

202-6

--

C110

Engine harness, in line to engine sensors

Fig.16

202-10

--

C213

IP harness behind LH side of IP near center of vehicle

Fig.80

202-28

--

C301

Engine harness, in line to fuel pump harness on LH frame rail near EBCM

Fig.39

202-37

--

G100

LH engine compartment, near fender well

Fig.6

--

--

G201

IP harness behind LH kick panel near IP fuse block

Fig.66

--

--

G103

Engine harness, at generator bracket

Fig. 31

--

--

P100

LH rear of engine compartment at bulkhead

Fig.45

--

--

P101

Under RH side of IP

Fig.80

--

--

S101

Engine harness, approx 20 cm from knock sensor breakout toward EBCM

--

--

--

S102

Engine harness, approx 22 cm from EGR sensor breakout toward C100

--

--

--

S103

Engine harness, approx 4 cm from fuel injector breakout toward transmission

--

--

--

S113

IP harness, approx 27 cm from C100 toward P102

--

--

--

S120

Engine harness, approx 19cm from C100 breakout toward EGR sensor breakout

--

--

--

S122

Engine harness 8cm from G103 breakout towards transmission

--

--

--

S130

Engine harness, approx 8cm from EGR sensor breakout toward underhood fuse-relay center breakout

--

--

--

S132

Engine harness, approx 4cm from fuel injector harness breakout toward heated oxygen sensor (bank 2 sensor 1) breakout

--

--

--

S133

Engine harness, approx 8cm from fuel injector harness breakout toward knock sensor breakout

--

--

--

S136

Engine harness, approx 15cm from EGR sensor breakout toward underhood fuse-relay center

--

--

--

S137

Engine harness approx 33cm from EGR sensor breakout toward underhood fuse-relay center

--

--

--

S138

Engine harness, approx 12cm from fuel injector breakout toward transmission

--

--

--

S139

Engine harness, approx 4cm from ECT sensor breakout toward C100

--

--

--

S152

Engine harness 16cm from fuel injector breakout towards G103 breakout

--

--

--

S153

Engine harness 4cm from G103 breakout towards transmission

--

--

--

S154

Engine harness 20cm from fuel injector breakout towards G103 breakout

--

--

--

S201

IP harness, approx 6cm from park brake warning switch breakout toward data link connector breakout

--

--

--

S202

IP harness, approx 4cm from radio breakout toward RH of body

--

--

--

S207

IP harness, approx 4cm into VSSB breakout

--

--

--

S210

IP harness, approx 4 cm into TCC/Stoplamp switch breakout

--

--

--

S215

IP harness, approx 11cm from radio breakout toward power antenna assembly breakout

--

--

--

S216

IP harness, approx 8cm from C200 breakout toward instrument cluster breakout

--

--

--

S218

IP harness, approx 33cm from C100 toward IP fuse block

--

--

--

S239

IP harness, approx 17cm into VSSB breakout

--

--

--

S301

O2S jumper harness, approx 15cm from C105 breakout toward O2S pigtail connector

--

--

--

S304

O2S jumper harness, approx 22cm from C105 breakout toward O2S pigtail connector

--

--

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