GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

1-2 Shift Solenoid Valve

Inside automatic transaxle

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

2-3 Shift Solenoid Valve

Inside automatic transaxle

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

A/C Compressor Clutch Coil

Part of A/C compressor, lower RH front of engine

HVAC Component Views in HVAC Systems with A/C - Manual (RPO C67) or HVAC Component Views in HVAC Systems with A/C - Automatic (RPO CJ2)

HVAC Connector End Views in HVAC Systems with A/C - Manual (RPO C67) or HVAC Connector End Views in HVAC Systems with A/C - Automatic (RPO CJ2)

A/C Refrigerant Pressure Sensor

RH side of engine compartment, on accumulator

Refer to HVAC Component Views in HVAC Systems with A/C - Manual (RPO C67) or HVAC Component Views in HVAC Systems with A/C - Automatic (RPO CJ2)

Refer to HVAC Connector End Views in HVAC Systems with A/C - Manual (RPO C67) or HVAC Connector End Views in HVAC Systems with A/C - Automatic (RPO CJ2)

Automatic Transaxle

LH side of engine

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Automatic Transaxle Fluid Pressure Manual Valve Position Switch

Inside automatic transaxle

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Automatic Transaxle Fluid Temperature (TFT) Sensor

Inside automatic transaxle

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Automatic Transaxle Input Speed Sensor

Inside automatic transaxle

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Camshaft Position (CMP) Sensor

RH side of engine, above crankshaft pulley

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Crankshaft Position (CKP) Sensor

RH side of engine at the end of crankshaft, behind harmonic balancer

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Cruise Control Module

LH side of engine compartment, mounted to strut tower

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

Below LH side of I/P, right of steering column

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Engine Coolant Fan Motor #1 (RH)

Mounted on RH side of radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Fan Motor #2 (LH)

Mounted on LH side of radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Temperature (ECT) Sensor

Top LH side of engine, below throttle body

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Engine Oil Level Indicator Switch

In center bottom of engine oil pan

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Engine Oil Pressure Indicator Switch

RH lower rear of engine, above transaxle

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

Rear top of engine, near center of valve cover

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

Behind LH side of rear fascia splash shield, in wheel well

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Exhaust Gas Recirculation (EGR) Valve

LH rear top of engine, near throttle body

Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Fuel Injectors

Top of engine, at each intake port

Refer to Engine Controls Component Views in Engine 3.8L System

Engine Controls Connector End Views in Engine 3.8L System

Fuel Tank

Below rear of vehicle

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Fuse Block

RH side of I/P, in RF door opening

Refer to Power and Grounding Component Views in Wiring Systems

Refer to Power and Grounding Connector End Views in Wiring Systems

Generator

Top rear RH side of engine

Refer to Engine Electrical Component Views in Engine Electrical

Refer to Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor (HO2S) Sensor #1

In rear bank exhaust manifold, behind center of engine

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Heated Oxygen Sensor (HO2S) Sensor #2

In exhaust system, behind catalytic converter

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Heater-A/C Control

Center of I/P

Refer to HVAC Component Views in HVAC Systems with A/C - Manual (RPO C67) or Refer to HVAC Component Views in HVAC Systems with A/C - Automatic (RPO CJ2)

Refer to HVAC Connector End Views in HVAC Systems with A/C - Manual (RPO C67) or Refer to HVAC Connector End Views in HVAC Systems with A/C - Automatic (RPO CJ2)

Idle Air Control (IAC) Valve

LH top of engine, on throttle body assembly

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Ignition Control Module (ICM)

Top RH front of engine

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Instrument Cluster

Top of I/P, above steering column

Refer to Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console

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

Intake Air Temperature (IAT) Sensor

LH front of engine compartment, in air cleaner duct

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Knock Sensor #1

In engine block, rear center, below exhaust manifold

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Knock Sensor #2

In engine block, front center, right of starter

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Manifold Absolute Pressure (MAP) Sensor

Top of engine, RH side of intake manifold

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Mass Air Flow (MAF) Sensor

LH front of engine, part of throttle body assembly

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Powertrain Control Module (PCM)

Front LH side of engine, inside air cleaner assembly

Refer to Engine Controls Component Views

Refer to Powertrain Control Module Connector End Views in Engine Controls - 3.8L

Pressure Control Solenoid Valve

Inside automatic transaxle

Refer to Transmission Component Location in Automatic Transaxle - 4T65-E

Refer to Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Splice Pack SP205

Below I/P, taped in harness, on RH side of steering column

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Refer to Data Link Communications Connector End Views in Wiring Systems

Starter

Lower front of engine

Refer to Engine Electrical Component Views in Engine Electrical

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Stop Lamp Switch

Below LH side of I/P, in RH side of brake pedal bracket

Refer to Lighting Systems Component Views in Lighting Systems

Refer to Lighting Systems Connector End Views in Lighting Systems

Throttle Position (TP) Sensor

Top of engine, on throttle assembly

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Torque Converter Clutch Pulse Width Modulation Solenoid Valve

Inside automatic transaxle

Refer to Transmission Component Location in Automatic Transaxle - 4T65-E

Refer to Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Transaxle Range Switch

LH of transaxle, below the throttle body

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

Underhood Accessory Wiring Junction Block

RH side of engine compartment, mounted to strut tower

Refer to Power and Grounding Component Views in Wiring Systems

Refer to Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (VSS)

Lower RH side of engine compartment, on RH side of transaxle

Refer to Engine Controls Component Views in Engine 3.8L System

Refer to Engine Controls Connector End Views in Engine 3.8L System

C101

I/P wiring harness to engine wiring harness, LH side of engine compartment, near strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C105

Engine wiring harness to engine coolant fan wiring harness, on radiator RH cooling fan

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C110

Engine wiring harness to electronic ignition control module wiring harness, top of engine, near ignition control module

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C113

Engine wiring harness to automatic transaxle wiring harness, LH side of engine compartment, top of transaxle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C125

Engine wiring harness to knock sensor module wiring harness, lower front of engine, left of knock sensor

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C126

Engine wiring harness to engine coolant temperature sensor wiring harness, top front of engine

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C181

I/P wiring harness to engine wiring harness, RH engine compartment, front of strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

I/P wiring harness to body wiring harness, behind RH side of I/P

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405

Body wiring harness to fuel tank wiring harness, rear compartment floor, forward of spare tire well

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G111

RH side of engine, on ignition control module bracket

Harness Routing Views in Wiring Systems

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G113

Lower LH front of engine, on transaxle stud

Harness Routing Views in Wiring Systems

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G117

Lower LH front of engine, on transaxle stud

Harness Routing Views in Wiring Systems

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G200

Behind RH side of I/P compartment

Harness Routing Views in Wiring Systems

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G203

Below I/P, RH side of steering column

Harness Routing Views in Wiring Systems

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G302

Inside RH door sill, forward of RH front seat

Harness Routing Views in Wiring Systems

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P100

Lower RH side of dash panel

Harness Routing Views in Wiring Systems

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P101

Upper LH side of dash panel

Harness Routing Views in Wiring Systems

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S105

Engine wiring harness, above center of radiator, approximately 4 cm (2 in) from C105 (engine coolant fan wiring harness)

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S106

Engine wiring harness, near air cleaner, approximately 43 cm (17 in) from PCM

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S107

Engine wiring harness, near LH front engine mount, approximately 4 cm (2 in) from fuel injector 5 breakout

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S109

Engine wiring harness, top LH side of engine, approximately 7 cm (3 in) from fuel injector 5 breakout

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S122

Engine wiring harness, LH side of engine compartment, near front of transaxle housing, approximately 19 cm (7 in) from transaxle wiring breakout

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S144

Electronic ICM wiring harness, top of engine near ignition control module, approximately 12 cm (5 in) from C110

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S145

Electronic ICM wiring harness, top of engine near ignition control module, approximately 12 cm (5 in) from C110

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S167

Engine wiring harness, near air cleaner, approximately 4 cm (2 in) from PCM breakout

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S202

I/P wiring harness, RH side of steering column, approximately 8 cm (3 in) from Data Link Connector (DLC) breakout

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S211

I/P wiring harness, behind instrument cluster, approximately 8 cm (3 in) from instrument cluster breakout

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S230

I/P wiring harness, center of I/P, approximately 4 cm (2 in) from radio breakout

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S233

I/P wiring harness, lower I/P below radio, approximately 2 cm (1 in) from radio antenna breakout

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S234

I/P wiring harness, LH side of I/P, between hazard warning switch breakout and data link breakout, approximately 8 cm (3 in) left of Data Link Connector (DLC) breakout

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S270

I/P wiring harness, LH side of I/P, between hazard warning switch breakout and Data Link Connector (DLC) breakout, approximately 7 cm (3 in) from DLC breakout

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S281

I/P wiring harness, behind LH side of I/P, approximately 8 cm (3 in) from P101

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S409

Body wiring harness, in rear compartment toward front, approximately 28 cm (11 in) from C405 (fuel tank connector)

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