Powertrain Component Views

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Fig 1: Front View Of Engine Electrical Components (Gas - 4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Throttle Body
2	Manifold Absolute Pressure (MAP) Sensor
3	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
4	Knock Sensor (KS) 1
5	Engine Block Heater
6	Engine Coolant Temperature (ECT) Sensor
7	Camshaft Position (CMP) Sensor
8	Generator (except HP2)

Fig 2: Front View Of Engine Electrical Components (HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Throttle Body
2	Camshaft Position (CMP) Sensor
3	Camshaft Position (CMP) Sensor Magnet

Fig 3: Top View Of Engine Electrical Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Injector 6
2	Ignition Coil 8
3	Fuel Injector 8
4	Fuel Injector 7
5	Ignition Coil 7
6	Fuel Injector 5
7	Ignition Coil 5
8	Ignition Coil 3
9	Fuel Injector 3
10	Ignition Coil 1
11	Fuel Injector 1
12	Manifold Absolute Pressure (MAP) Sensor
13	Fuel Injector 2
14	Ignition Coil 2
15	Ignition Coil 4
16	Fuel Injector 4
17	Ignition Coil 6

Fig 4: Top View Of Engine Electrical Components (HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Injector 7
2	Fuel Injector 5
3	Fuel Injector 3
4	Fuel Injector 1
5	Fuel Injector 2
6	Fuel Injector 4
7	Fuel Injector 6
8	Fuel Injector 8

Fig 5: View Of Engine Electrical Components - Right Side (Gas - 4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Ignition Coil 8
2	Ignition Coil 6
3	Ignition Coil 4
4	Manifold Absolute Pressure (MAP) Sensor
5	Throttle Body
6	Ignition Coil 2
7	Knock Sensor (KS) 2
8	Crankshaft Position (CKP) Sensor
9	Engine Oil Level (EOL) Switch (Early Production)
10	Starter Motor (except HP2)
11	Valve Lifter Oil Manifold (VLOM) Assembly (LY5, LMG, L76 or LC9)
12	Engine Oil Pressure (EOP) Sensor

Fig 6: View Of Engine Electrical Components - Left Rear (HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Block Heater Connector
2	Engine Coolant Temperature (ECT) Sensor
3	Ignition Coil 1
4	Evaporative Emissions (EVAP) Canister Purge Solenoid Valve
5	Manifold Absolute Pressure (MAP) Sensor
6	Ignition Coil 3
7	Ignition Coil 5
8	Ignition Coil 7
9	Engine Oil Pressure (EOP) Sensor
10	Valve Lifter Oil Manifold (VLOM) Assembly (DOD)
11	Knock Sensor (KS) 1

Fig 7: View Of Engine Electrical Components - Right Rear (HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Ignition Coil 2
2	Ignition Coil 8
3	Ignition Coil 6
4	Ignition Coil 4
5	Knock Sensor (KS) 2
6	Crankshaft Position (CKP) Sensor

Fig 8: View Of Transfer Case Components NQH

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transfer Case Encoder Motor
2	Propshaft Speed Sensor - Rear
3	Vehicle Speed Sensor (VSS)
4	Propshaft Speed Sensor - Front

Fig 9: View Of Park Neutral Position (PNP) Switch (M30/M32)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Automatic Transmission
2	Park/Neutral Position (PNP) Switch

Fig 10: Identifying Transmission/Transfer Case Components (HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transmission Power Inverter Module (3 Phase) Cable Cover
2	Vehicle Speed Sensor (VSS) - 2WD
3	Vehicle Speed Sensor (VSS) - 4WD
4	Transfer Case 2/4 Wheel Drive Actuator Position Sensor (NQH)
5	Transfer Case Encoder Motor (NQH)

Fig 11: Identifying Automatic Transmission Of Electronic Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
36	Vehicle Speed Sensor (VSS)
66	Torque Converter Clutch (TCC) Solenoid Valve
69	Automatic Transmission Fluid Pressure Manual Valve Position Switch
250	Input Speed Sensor (ISS)
367a	1-2 Shift Solenoid (SS) Valve
367b	2-3 Shift Solenoid (SS) Valve
377	Pressure Control (PC) Solenoid Valve
394	3-2 Shift Solenoid (SS) Valve
396	Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Valve

Fig 12: Identifying Automatic Transmission Internal Electronic Components (4L80-E)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
22a	Input Speed Sensor (ISS)
22b	Output Speed Sensor (OSS)
34	Automatic Transmission Fluid Temperature (TFT) Sensor
40	Automatic Transmission Fluid Pressure Manual Valve Position Switch
311	2-3 Shift Solenoid (SS) Valve
313	1-2 Shift Solenoid (SS) Valve
320	Pressure Control (PC) Solenoid Valve Assembly
323	Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Valve

Fig 13: Electronic Component Views

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Control Solenoid Valve Assembly
2	Input Speed Sensor (ISS)/Output Speed Sensor (OSS)
3	Automatic Transmission Internal Mode Switch (IMS)