Powertrain Component Views

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Fig 1: Identifying Components On Left Side Of Engine (4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Generator
2	Throttle Body
3	Transmission
4	Park/Neutral Position (PNP) Switch (M30)
5	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
6	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
7	Knock Sensor (KS) 1
8	Engine Coolant Temperature (ECT) Sensor
9	A/C Compressor Clutch (C67/CJ2)

Fig 2: Identifying Fuel Injectors (4.3L)

Courtesy of GENERAL MOTORS CORP.

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

Fig 3: View Of Right Side Of Engine (4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Throttle Body
3	Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
4	X112
5	G103
6	Crankshaft Position (CKP) Sensor
7	Knock Sensor (KS) 2
8	Starter Motor
9	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
10	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
11	Vehicle Speed Sensor (VSS) (M30/TZ0)

Fig 4: View Of Rear Of Engine (4.3L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Central Sequential Fuel Injection (Central SFI) Module
2	Manifold Absolute Pressure (MAP) Sensor
3	G106
4	Engine Oil Pressure (EOP) Sensor
5	Ignition Control Module (ICM)
6	G107

Fig 5: Identifying Left Front Side Of Engine Components (4.8L/5.3L/6.0L/6.2L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Camshaft Position (CMP) Actuator Solenoid Valve (6.0L/6.2L)
2	Camshaft Position (CMP) Sensor
3	X112

Fig 6: 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

Fig 7: 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 8: Identifying Components At Right Side Of Engine (4.8L/5.3L/6.0L/6.2L except LFA/HP2)

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	Starter Motor
10	Valve Lifter Oil Manifold (VLOM) Assembly (5.3L/6.0L except LY6)
11	Engine Oil Pressure (EOP) Sensor

Fig 9: Identifying Components Behind Engine (4.8L/5.3L/6.0L/6.2L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
2	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
3	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
4	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Fig 10: Identifying Components At Left Side Of Engine (LFA/HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Ignition Coil 1
2	Evaporative Emissions (EVAP) Canister Purge Solenoid Valve
3	Fuel Injector 1
4	Ignition Coil 3
5	Fuel Injector 3
6	Ignition Coil 5
7	Fuel Injector 5
8	Ignition Coil 7
9	Fuel Injector 7
10	Engine Oil Pressure (EOP) Sensor
11	Knock Sensor (KS) 1

Fig 11: Identifying Components At Right Side Of Engine (LFA/HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Valve Lifter Oil Manifold (VLOM) Assembly
2	Fuel Injector 8
3	Fuel Injector 6
4	Fuel Injector 4
5	Fuel Injector 2
6	Ignition Coil 2
7	Ignition Coil 4
8	Ignition Coil 6
9	Knock Sensor (KS) 2
10	Ignition Coil 8
11	Crankshaft Position (CKP) Sensor

Fig 12: Identifying Components At Front Of Engine (LFA/HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Throttle Body
2	Manifold Absolute Pressure (MAP) Sensor
3	Engine Coolant Temperature (ECT) Sensor
4	Camshaft Position (CMP) Sensor
5	A/C Compressor

Fig 13: Identifying Components At Rear Of Engine (LFA/HP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Output Speed Sensor (OSS) (M99)
2	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1
3	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2
4	Transmission Power Inverter Module (3 Phase) Cable Cover
5	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2
6	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1

Fig 14: Identifying Components At Left Side Of Engine (Diesel)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Injector 2
2	Turbocharger Vane Position Sensor
3	Fuel Injector 4
4	Fuel Rail Pressure (FRP) Sensor
5	Fuel Injector 6
6	Fuel Injector 8
7	Glow Plug 8
8	Glow Plug 6
9	Engine Oil Pressure (EOP) Sensor
10	Engine Oil Level (EOL) Switch
11	Glow Plug 4
12	G106
13	G102
14	Glow Plug 2

Fig 15: Identifying Components At Top Of Engine (Diesel)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Turbocharger Vane Position Control Solenoid Valve
2	Glow Plug Control Module (GPCM)
3	Fuel Temperature Sensor
4	Intake Air Temperature (IAT) Sensor 2 Connector
5	X128
6	A/C Refrigerant Pressure Sensor (C67/CJ2)
7	Generator - Auxiliary (K76/YF2)
8	A/C Compressor Clutch (C67/CJ2)
9	Engine Coolant Temperature (ECT) Sensor
10	Camshaft Position (CMP) Sensor
11	X127
12	Generator
13	Manifold Absolute Pressure (MAP) Sensor
14	Intake Air Heater (IAH)
15	Intake Air Temperature (IAT) Sensor 2
16	Fuel Heater
17	A/C Low Pressure Switch (C67/CJ2)

Fig 16: Identifying Components At Right Side of Engine (Diesel)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Injector 7
2	Fuel Injector 5
3	Fuel Injector 3
4	Exhaust Gas Recirculation (EGR) Valve
5	Fuel Injector 1
6	Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
7	Intake Air Valve
8	Crankshaft Position (CKP) Sensor
9	Glow Plug 1
10	G103
11	G105
12	Block Heater
13	Glow Plug 3
14	Glow Plug 5
15	Water In Fuel Sensor
16	Starter Motor
17	Glow Plug 7

Fig 17: Identifying Components At Rear Engine (Diesel)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	X300
2	G300
3	Automatic Transmission Turbine Speed Sensor (MW7)
4	Transmission
5	Vehicle Speed Sensor (VSS) (MW7)
6	X124 (PTO)
7	Power Take Off (PTO) Module (PTO)
8	X175 (MW7)

Fig 18: Identifying Transfer Case Components (NQG/NP2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transfer Case Shift Control Switch
2	Vehicle Speed Sensor (VSS)

Fig 19: Locating Transfer Case Components (NQH/NQF)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transfer Case Encoder Motor
2	Vehicle Speed Sensor (VSS)
3	Transfer Case 2/4 Wheel Drive Actuator Position Sensor (NQH)

Fig 20: Park Neutral Position (PNP) Switch Component Views (M30/M32)

Courtesy of GENERAL MOTORS CORP.

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

Fig 21: Exploded Views 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 (TFP) 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 22: View Of Electronic Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Control Solenoid Valve Assembly
2	Input and Output Speed Sensor Assembly
3	Automatic Transmission Internal Mode Switch