GM Service Manual Online
For 1990-2009 cars only

Automatic Transmission Components Gas Engines

Name

Location

Locator View

Connector End View

Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

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

Left side of transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Inline Harness Connector End View

IP Fuse Block

At left lower kick panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Pressure Control Solenoid (PC SOL) Valve

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Shift Solenoid 1-2,2-3

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

TCC/Stoplamp Switch

Below center of IP, near brake pedal lever

Lighting Systems Component Views in Body and Accessories

Lighting Systems Connector End Views in Body and Accessories

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

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Transmission Fluid Temperature (TFT) Sensor

Part of Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch. Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Underhood Fuse--Relay Center

Engine compartment, left fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Control Module (VCM) 4.3L

Engine compartment, left fender

Engine Controls Component Views in Engine Controls 4.3L

VCM Connector End Views in Engine Controls 4.3L

Vehicle Control Module (VCM) 5.0L, 5.7L

Engine compartment, left fender

Engine Controls Component Views in Engine Controls 5.0L, 5.7L

VCM Connector End Views in Engine Controls 5.0L, 5.7L

Vehicle Control Module (VCM) 7.4L

Engine compartment, left fender

Engine Controls Component Views in Engine Controls 7.4L

VCM Connector End Views in Engine Controls 7.4L

Vehicle Speed Sensor (VSS) 4.3L

Left side of transmission

Engine Controls Component Views in Engine Controls 4.3L

Engine Controls Connector End Views in Engine Controls 4.3L

Vehicle Speed Sensor (VSS) 5.0L, 5.7L

Left side of transmission

Engine Controls Component Views in Engine Controls 5.0L, 5.7L

Engine Controls Connector End Views in Engine Controls 5.0L, 5.7L

Vehicle Speed Sensor (VSS) 7.4L

Left side of transmission

Engine Controls Component Views in Engine Controls 7.4L

Engine Controls Connector End Views in Engine Controls 7.4L

C100

Left rear of engine compartment at bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C103

Left on transmission

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View

S120 (5.0L, 5.7L)

Engine harness, approx 4 cm (1.6  in) from C100 breakout toward ECT sensor breakout

--

--

S120 (4.3L, 7.4L)

Engine harness, approx 19 cm (7.5 in) from C100 breakout toward EGR sensor breakout

--

--

S132 (5.0L, 5.7L)

Engine harness, approx 8 cm (3.1 in) into fuel injector harness breakout

--

--

S132 (7.4L)

Engine harness, appox 4 cm (1.6 in) from EGR valve breakout toward knock sensor breakout

--

--

S133 (5.0L, 5.7L)

Engine harness, approx 15 cm (5.9 in) into fuel injector harness breakout

--

--

S136 (5.0L, 5.7L)

Engine harness, approx 7 cm (2.8 in) right HO2 sensor breakout toward fuel injector breakout

--

--

S136 (7.4L)

Engine harness, approx 7 cm (2.8 in) from engine coolant temperature sensor toward EGR valve breakout

--

--

S137 (5.0L, 5.7L)

Engine harness approx 17 cm (6.7 in) from ECT sensor breakout toward C100

--

--

S154 (4.3L)

Engine harness, approx 98 cm (38.6 in) from the underhood fuse relay center, toward the A/C compressor breakout

--

--

S154 (5.0L, 5.7L)

Engine harness 4 cm (1.6 in) from the ignition coil breakout, toward the transmission

--.

--

S154 (7.4L)

Engine harness 3 cm (1.2 in) from MAF sensor breakout toward ECT sensor breakout

--

--

S210

IP harness, approx 4 cm (1.6 in) into TCC/Stoplamp switch breakout

--

--

S231

IP harness, approx 2.5 cm (1 in) from convenience center breakout

--

--

Automatic Transmission Components Diesel Engines

Name

Location

Locator View

Connector End View

Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

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

Left side of transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Inline Harness Connector End View

Electronic Brake Control Module (EBCM)

Left frame rail near center of vehicle

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Instrument Cluster

Left side of IP

Instrument Panel, Gages, and Console Component Views in Body and Accessories

Instrument Panel, Gages, and Console Connector End Views in Body and Accessories

Pressure Control Solenoid (PC SOL) Valve

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Powertrain Control Module (PCM)

Behind center of IP

Engine Controls Component Views in Engine Controls 6.5L

Powertrain Control Module Connector End Views in Engine Controls 6.5L

Radio

Center of I/P

Entertainment Component Views in Body and Accessories

Entertainment Connector End Views in Body and Accessories

Shift Solenoid 1-2,2-3

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

TCC/Stoplamp Switch

Below center of IP, near brake pedal lever

Lighting Systems Component Views in Body and Accessories

Lighting Systems Connector End Views in Body and Accessories

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

Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Transmission Fluid Temperature (TFT) Sensor

Part of Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch. Internal to transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Internal Connector End Views

Underhood Fuse--Relay Center

Engine compartment, left fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (VSS) 6.5L

Left side of transmission

Engine Controls Component Views in Engine Controls 6.5L

Engine Controls Connector End Views in Engine Controls 6.5L

Vehicle Speed Sensor Buffer (VSSB) 6.5L

Below left side of IP, near steering column

Engine Controls Component Views in Engine Controls 6.5L

Engine Controls Connector End Views in Engine Controls 6.5L

C100

Left rear of engine compartment at bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C103

Left on transmission

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View

C220

IP harness, right side of IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

Engine harness, at generator bracket

Power and Grounding Component Views in Wiring Systems

--

P100

Left rear of engine compartment at bulkhead

Harness Routing Views in Wiring Systems

--

P101

Under right side of IP

Harness Routing Views in Wiring Systems

--

S102

Engine harness, approx 4 cm (1.6 in) from main harness breakout that leads to blower motor toward C100

--

--

S112

IP harness, approx 40 cm (15.7 in) from C100 toward P102

--

--

S114

IP harness, approx 14 cm (5.5 in) from C100 toward P102

--

--

S117

Engine harness, approx 11 cm (4.3 in) into main harness breakout that leads to blower motor resistor/relay and starter solenoid breakouts

--

--

S120

Engine harness, approx 4 cm (1.6 in) into main harness breakout that leads to blower motor resistor and starter solenoid breakouts

--

--

S124

Engine harness, approx 15 cm (5.9 in) from C107 breakout toward C100 breakout

--

--

S216

IP harness, approx 8 cm (3.1  n) from C200 breakout toward instrument cluster breakout

--

--

S238

IP harness, approx 4 cm (1.6 in) from instrument cluster breakout toward IP relay center

--

--

S239

IP harness, approx 17 cm (6.7 in) into VSSB breakout

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