GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

1-2 Shift Solenoid (1-2 SS) Valve

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

2-3 Shift Solenoid (2-3 SS) Valve

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

A/C Compressor Clutch Coil

Part of the A/C compressor, mounted to the right front of the engine.

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

A/C Compressor Clutch Diode

Spliced into the engine wiring harness, approximately 10 cm (4 in) from the A/C compressor clutch coil connector.

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

A/C Refrigerant Pressure Sensor

Right side of the engine compartment, below the accumulator.

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

Automatic Transaxle Control Position Indicator Lamp

In the center console.

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Automatic Transaxle Fluid Pressure Manual Valve Position Switch

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

Automatic Transaxle Fluid Temperature (TFT) Sensor

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

Automatic Transaxle Input Shaft Speed Sensor

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

Auxiliary Dome Lamp

Center of the windshield header

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Bank 1 Knock Sensor (KS)

Lower RR of the engine, below the exhaust manifold.

Engine Controls Component Views

Engine Controls Connector End Views

Body Control Module (BCM)

LH side of the instrument panel, above parking brake.

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Bottom Underhood Accessory Wiring Junction Block

RH side of the engine compartment, forward of the strut tower.

Power and Grounding Component Views in Wiring Systems

--

Camshaft Position Sensor

RH side of the engine, below the intake plenum.

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (7X) Sensor

Lower rear of the engine.

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (24X) Sensor

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

Engine Controls Component Views

Engine Controls Connector End Views

Cruise Control Module

LH side of the engine compartment, near the strut tower.

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

On the bottom of the instrument panel, to the right of the steering column.

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electronic Brake Control Module (EBCM)

In the LR side of engine compartment, mounted on the ABS hydraulic modulator.

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Engine Coolant Fan Motor 1

Behind the LH side of the radiator.

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Fan Motor 2

Behind the RH side of the radiator.

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Temperature (ECT) Sensor

LH side, top of the engine.

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Level Sensor

Center of the engine, above the starter.

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

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

Engine Oil Pressure Indicator Switch

Front of the engine, above the starter.

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

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

Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

Top rear of the engine, on the intake manifold below the ignition control module.

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

Behind the left rear fascia splash shield in the wheel well.

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

Behind the LH rear fascia splash shield in the wheel well.

Engine Controls Component Views

Engine Controls Connector End Views

Exhaust Gas Recirculation (EGR) Valve

Upper LH side of the engine.

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injectors

Top of the engine at each of the cylinder intake ports.

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Level Sensor

Mounted in the fuel tank.

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Pump

Mounted in the fuel tank.

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Tank

Below the rear of the vehicle.

Engine Controls Component Views

Engine Controls Connector End Views

Fusible Links

Front of the engine, at the starter assembly.

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fusible Links

Top underhood accessory wiring junction block.

Power and Grounding Component Views in Wiring Systems

--

Fusible Links

Bottom underhood accessory wiring junction block.

Power and Grounding Component Views in Wiring Systems

--

Generator

Top of the RH side of the engine.

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor 1 (H02S1)

Rear of the engine, in the exhaust manifold.

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor 2 (H02A2)

In the exhaust system, behind the catalytic converter.

Engine Controls Component Views

Engine Controls Connector End Views

Idle Air Control (IAC) Valve

Top of the engine, front of the throttle assembly.

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control (IC) Module

Top center rear of the engine.

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

LH side of the instrument panel.

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

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

Intake Air Temperature (IAT) Sensor

LF of the engine compartment, on the air intake duct.

Engine Controls Component Views

Engine Controls Connector End Views

LH IP Accessory Wiring Junction Block

RH side of the instrument panel, in the left front door opening.

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Manifold Air Pressure (MAP) Sensor

Top rear of the engine, on the intake plenum near the ignition control module.

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

LF of the engine compartment, in the air cleaner duct.

Engine Controls Component Views

Engine Controls Connector End Views

Park/Neutral Position Switch

Inside the automatic transaxle.

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module (PCM)

RH side of the engine compartment, forward of the strut tower, inside air box.

Engine Controls Component Views

Engine Controls Connector End Views

Pressure Control Solenoid Valve

Inside the automatic transaxle.

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

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

RH IP Accessory Wiring Junction Block

RH side of the instrument panel, in the right front door opening.

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Secondary Air Injection Reaction (A.I.R.) Motor

LF of the engine compartment, forward of LF wheel well.

Engine Controls Component Views

Engine Controls Connector End Views

Secondary Air Injection Reaction (A.I.R.) Valve Solenoid

Rear of the engine, in the exhaust manifold.

Engine Controls Component Views

Engine Controls Connector End Views

Splice Pack SP205

Next to the LH IP accessory wiring junction block wiring harness, taped on harness.

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Starter

Lower front of the engine.

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Stop Lamp Switch

Behind the instrument panel, on the brake pedal support.

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Throttle Position (TP) Sensor

Top of the engine, on the throttle assembly.

Engine Controls Component Views

Engine Controls Connector End Views

Top Underhood Accessory Wiring Junction Block

RH side of the engine compartment, forward of the strut tower.

Power and Grounding Component Views in Wiring Systems

--

Torque Converter Clutch Pulse Width Modulation (TCC PWM SOL) Solenoid Valve

Inside the automatic transaxle.

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

Transaxle Fluid Temperature (TFT) Sensor

Inside the automatic transaxle.

Transmission Component Location in Automatic Transaxle - 4T65-E

Automatic Transmission Internal Connector End Views in Automatic Transaxle -- 4T65-E

Vehicle Speed Sensor (VSS)

RR of the engine, on the automatic transaxle.

Engine Controls Component Views

Engine Controls Connector End Views

C101 (20 cavities)

Engine harness to the instrument panel harness, in the right side of the engine compartment, near the strut tower.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102 (16 cavities)

Engine harness to the fuel injector harness, on the right rear of the engine compartment, near the generator.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C106 (24 cavities)

Instrument panel harness, front right side of engine compartment.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C112 (24 cavities)

Instrument panel harness to engine harness.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C113 (20 cavities)

Engine harness to the transmission/transaxle harness, mounted on the left side of the transmission/transaxle housing.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (12 cavities)

Body harness to the fuel tank harness, below the center rear of the vehicle above the fuel tank.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G101

Left side of the radiator support.

Harness Routing Views in Wiring Systems

--

G111 (VIN E)

Lower left front of the engine, on the automatic transaxle stud, near the starter.

Harness Routing Views in Wiring Systems

--

G113

Lower left front of the engine, on the automatic transaxle stud, near the starter.

Harness Routing Views in Wiring Systems

--

G203

Behind the instrument panel in the right side of the brake pedal bracket.

Harness Routing Views in Wiring Systems

--

G302

At the base of the right B pillar.

Harness Routing Views in Wiring Systems

--

P100

Right rear of the engine compartment, near the strut tower.

Harness Routing Views in Wiring Systems

--

P101

Left rear of the engine compartment, near the strut tower.

Harness Routing Views in Wiring Systems

--

P408

Behind the left rear fascia splash shield in the wheel well.

Harness Routing Views in Wiring Systems

--

S106

Engine harness, on the left side of the engine compartment above the automatic transaxle, approximately 4 cm (2 in.) from inline connector C113 automatic transaxle breakout.

--

--

S121

Engine jumper harness, below the intake plenum, approximately 2 cm (1 in.) from the fuel injector 3 breakout.

--

--

S130

Forward lamp harness, near LH headlamp, approximately 4 cm (1 in.) from the outside air temperature sensor.

--

--

S131

Engine harness, front right of engine, approximately 2.5 cm (1 in.) from inline connector C102 to fuel injector harness breakout.

--

--

S132

Forward lamp harness, inside top underhood accessory wiring junction block, approximately 3 cm (1 in) from the bracket side.

--

--

S148

Forward lamp harness, left side near LH headlamp, approximately 18.5 cm (7 in.) from G101 breakout.

--

--

S157

Engine harness, front left of engine compartment, approximately 10.5 cm (4 in.) from inline connector C112 to forward harness breakout.

--

--

S158

Engine harness left rear of engine, approximately 6.5 cm (2 in.) from the EGR valve solenoid breakout.

--

--

S169

Engine harness, lower left near automatic transaxle, approximately 6.5 cm (2 in.) from inline connector C113 to automatic transaxle breakout.

--

--

S174

Forward lamp harness, near the LH headlamp, approximately 10.5 cm (4 in.) from the outside air temperature sensor breakout.

--

--

S175

Forward lamp harness, near LH headlamp, approximately 31.5 cm (14 in.) from the outside air temperature sensor breakout.

--

--

S179

Forward lamp harness, inside top underhood accessory wiring junction block, approximately 2 cm from the bracket side.

--

--

S236

Instrument panel harness, behind right side of Instrument panel, approximately 4 cm (2 in.) from the body control module breakout.

--

--

S253

Instrument panel harness, behind lower right side of instrument panel, approximately 4 cm (2 in.) from the data link connector breakout.

--

--