GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

1-2 Shift Solenoid (1-2 SS) Valve Assembly

Inside the automatic transmission assembly

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

2-3 Shift Solenoid (2-3 SS) Valve Assembly

Inside the automatic transmission assembly

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

3-2 Shift Solenoid (3-2 SS) Valve Assembly

Inside the automatic transmission assembly

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

Automatic Transmission

Under the vehicle attached to the rear of the engine

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch

Inside the automatic transmission assembly

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

Automatic Transmission Shift Lock Control Solenoid Feed (BTSI)

On the lower part of the steering column

Automatic Transmission Electronic Component Views

Inline Harness Connector End Views in Wiring Systems

Body Control Module (BCM)

On the lower left side of the IP below the steering column

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Wiring Harness Junction Block

Under the left side of the instrument panel near the left kick panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Engine Wiring Harness Junction Block

At the left side of the engine compartment near the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fuse Block

On the lower left side of the IP

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Instrument Cluster

On the left side of the IP above the steering column

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

Park/Neutral Position Switch

On the left side of the transmission

Engine Controls Component Views in Engine Controls - 4.3L

Engine Controls Component Views in Engine Controls - 4.8L, 5.3L, 6.0L

Engine Controls Connector End Views in Engine Controls - 4.3L

Engine Controls Connector End Views in Engine Controls - 4.8L, 5.3. 6.0L

Powertrain Control Module (PCM)

Near the left front inside the engine compartment

Engine Controls Component Views in Engine Controls - 4.8L, 5.3L, 6.0L

Engine Controls Connector End Views in Engine Controls - 4.8L, 5.3L, 6.0L

Stoplamp Switch

At the top of the brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

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

In the automatic transmission

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

Torque Converter Clutch Solenoid (TCC SOL) Valve

In the automatic transmission

Transmission Component Location

Automatic Transmission Inline Harness Connector End View

Tow/Haul Switch

In the end of the automatic transmission shift lever

--

Automatic Transmission Related Connector End Views

Vehicle Control Module (VCM)

On the left front of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

Engine Controls Connector End Views in Engine Controls - 4.3L

C100

Under the Engine Wiring Harness Junction Block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201A

On the steering column under the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C202

On the left side of the IP on the back of the cluster

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

On the right rear of the engine block

Power and Grounding Component Views in Wiring Systems

--

G203

On the left upper IP at the "A" pillar

Power and Grounding Component Views in Wiring Systems

--

P100

At the left rear of the engine compartment in the front of the dash

Power and Grounding Component Views in Wiring Systems

--

P500

Between the left front door and the body

Power and Grounding Component Views in Wiring Systems

--

P501

In the left door to the outside mirror

Power and Grounding Component Views in Wiring Systems

--

P600

Between the right front door and the body

Power and Grounding Component Views in Wiring Systems

--

Splice Pack 203 (SP203)

On the top left side of the IP near the "A" pillar

Harness Routing Views in Wiring Systems

--

Splice Pack 205 (SP205)

On the left side of the IP behind the headlamp switch

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

S103

In the engine harness

--

--