Powertrain Component Views

Fig 1: EVAP Purge Solenoid & EGR Valve (LD8/L37)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Exhaust Gas Recirculation (EGR) Valve

Fig 2: HO2S Sensor 2 (Post HO2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Heated Oxygen Sensor (HO2S) 2

Fig 3: Secondary Air Injection (AIR) Pump Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Secondary Air Injection (AIR) Pump

Fig 4: Internal Electronic Component Locations 4T65E

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Pressure Control (PC) Solenoid Valve Assembly
2	1-2, 3-4 Shift Solenoid (SS) Valve Assembly
3	Automatic Transmission Input Shaft Speed (A/T ISS) Sensor Assembly
4	2-3 Shift Solenoid (SS) Valve Assembly
5	Lever Assembly-Manual Shaft Detent with Shift Position Switch - Internal Mode Switch (IMS)
6	Vehicle Speed Sensor (VSS) Assembly
7	Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly
8	Transmission Fluid Temperature (TFT) Sensor
9	Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve Assembly

Fig 5: Rear Of Engine Compartment On Top Rear Of Engine Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Secondary Air Injection (AIR) Check Valve (NU6)

Fig 6: Left Front Corner Of Engine Compartment Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Mass Air Flow (MAF) / Intake Air Temperature (IAT) Sensor
2	Engine Control Module (ECM) (LD8/L37), Powertrain Control Module (PCM) (L26), in the Air Cleaner Assembly

Fig 7: Front Of Engine (L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Ignition Coil Module
2	Manifold Absolute Pressure (MAP) Sensor
3	Fuel Injector 1
4	Fuel Injector 3
5	Fuel Injector 5
6	Exhaust Gas Recirculation (EGR) Valve
7	Throttle Actuator Control (TAC) Module
8	Engine Coolant Temperature (ECT) Sensor
9	Starter Solenoid
10	Starter
11	Engine Oil Level Switch
12	G110
13	Knock Sensor (KS) 1

Fig 8: Rear Of Engine (L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Throttle Actuator Control (TAC) Module
3	Exhaust Gas Recirculation (EGR) Valve
4	Fuel Injector 6
5	Fuel Injector 4
6	Fuel Injector 2
7	Manifold Absolute Pressure (MAP) Sensor
8	Camshaft Position (CMP) Sensor
9	Engine Oil Pressure (EOP) Sensor
10	Knock Sensor (KS) 2
11	Heated Oxygen Sensor (HO2S) 1

Fig 9: Electronic Component Views 4T80E

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve
2	Pressure Control Solenoid (PCS) Valve
3	Automatic Transmission Input (Shaft) Speed Sensor (ISS)
4	Vehicle Speed Sensor (VSS)
5	1-2 and 2-3 Shift Solenoid (1-2 SS) (2-3 SS) Valves
6	Internal Mode Switch (IMS)
7	Automatic Transmission Fluid Temperature (TFT) Sensor

Fig 10: Top Of Engine (L37/LD8) Component Views

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Starter Motor
2	Manifold Absolute Pressure (MAP) Sensor
3	Throttle Body Assembly
4	Fuel Injector 8
5	Ignition Coil/Module 8
6	Fuel Injector 6
7	Ignition Coil/Module 6
8	Knock Sensor (KS) 2
9	Fuel Injector 4
10	Ignition Coil/Module 4
11	Ignition Coil/Module 2
12	Fuel Injector 2
13	Crankshaft Position (CKP) Sensor
14	Knock Sensor (KS) 1
15	Camshaft Position (CMP) Sensor
16	Ignition Coil/Module 1
17	Ignition Coil/Module 3
18	Fuel Injector 1
19	Ignition Coil/Module 5
20	Fuel Injector 3
21	Ignition Coil/Module 7
22	Fuel Injector 5
23	Fuel Injector 7

Fig 11: Front Of Engine (L37/LD8) Component Views

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Valve Cover
2	Ignition Coil/Module 2
3	Ignition Coil/Module 4
4	Ignition Coil/Module 6
5	Ignition Coil/Module 8
6	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
7	Engine Oil Pressure (EOP) Switch

Fig 12: Rear Of Engine (L37/LD8)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Throttle Body Assembly
2	Manifold Absolute Pressure (MAP) Sensor
3	Valve Cover
4	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
5	Engine Coolant Temperature (ECT) Sensor
6	Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2

Fig 13: Left Side Of Engine (LD8/L37)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine - 4.6L
2	A/C Compressor Clutch
3	Generator
4	G110

Fig 14: Identifying G112, G114 & G115 (LD8)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Exhaust Manifold
2	G114
3	G112
4	G115

Fig 15: Transmission Components (L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Intake Manifold
3	Vehicle Speed Sensor (VSS)
4	Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
5	G114
6	Transmission

Fig 16: View Of Rear Cylinder Head (LD8)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Exhaust Gas Recirculation (EGR) Valve
2	Valve Cover
3	G100
4	Engine Coolant Temperature (ECT) Sensor

Fig 17: View Of Front Engine Components (L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Generator
2	Manifold Absolute Pressure (MAP) Sensor
3	Throttle Actuator Control (TAC) Module
4	Engine Coolant Heater
5	Starter
6	Knock Sensor (KS) 1
7	Engine Oil Level Switch
8	A/C Compressor Clutch
9	Ignition Control Module (ICM)

Fig 18: Right Side Of Engine - Engine Front Components (L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Exhaust Gas Recirculation (EGR) Valve
2	Manifold Absolute Pressure (MAP) Sensor
3	Throttle Actuator Control (TAC) Module
4	Ignition Coil / Module
5	Crankshaft Position (CKP) Sensor
6	Engine Oil Pressure (EOP) Sensor
7	Camshaft Position (CMP) Sensor
8	Heated Oxygen Sensor (HO2S) 1

Fig 19: Power & Grounding Components (G112 - L26)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Intake Manifold
2	Ignition Control Module
3	G115
4	Harmonic Balancer