Powertrain Component Views

Fig 1: Identifying MAF/IAT Sensor & Throttle Body

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
2	Throttle Body

Fig 2: Identifying Engine Cooling Fan & Fan Control Module

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Cooling Fan
2	Fan Control Module

Fig 3: Identifying Coolant Level Switch

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Coolant Level Switch

Fig 4: Identifying Front Of Engine Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Camshaft Position (CMP) Sensor - Bank 1 - Intake
2	Camshaft Position (CMP) Actuator - Bank 1 - Intake
3	Manifold Absolute Pressure (MAP) Sensor
4	Barometric Pressure (BARO) Sensor
5	Supercharger Air Inlet Pressure Sensor
6	Manifold Absolute Pressure (MAP) Sensor
7	Supercharger Bypass Valve Solenoid
8	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 2 Intake
9	Camshaft Position (CMP) Sensor - Bank 2 Intake
10	Camshaft Position (CMP) Sensor - Bank 2 Exhaust
11	Camshaft Position (CMP) Actuator Solenoid valve - Bank 2 Exhaust
12	Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
13	Brake Pressure Modulator Valve (BPMV)
14	Electronic Brake Control Module (EBCM)
15	Variable Effort Steering Actuator
16	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 1 Exhaust
17	Camshaft Position (CMP) Sensor - Bank 1 Exhaust

Fig 5: Identifying Top Of Engine Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	X148
2	Knock Sensor (KS) 1
3	Fuel Injector 8
4	X139
5	Ignition Coil 8
6	Fuel Injector 6
7	Ignition Coil 6
8	Fuel Injector 4
9	Ignition Coil 4
10	Fuel Injector 2
11	Ignition Coil 2
12	Knock Sensor (KS) 2
13	Crankshaft Position (CKP) Sensor
14	Intake Air Temperature (IAT) Sensor 2
15	Fuel Injector 1
16	X140
17	Ignition Coil 1
18	Ignition Coil 3
19	Fuel Injector 3
20	Ignition Coil 5
21	Fuel Injector 5
22	Ignition Coil 7
23	Fuel Injector 7

Fig 6: Identifying Top Of Engine Components (LH2)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 1 Exhaust
2	Camshaft Position (CMP) Sensor - Bank 1 Exhaust
3	Camshaft Position (CMP) Sensor - Bank 1 Intake
4	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 1 Intake
5	Manifold Absolute Pressure (MAP) Sensor
6	X140
7	Ignition Coil 1
8	Fuel Injector 1
9	Ignition Coil 3
10	Fuel Injector 3
11	Ignition Coil 5
12	Fuel Injector 5
13	Ignition Coil 7
14	Fuel Injector 7
15	Fuel Injector 6
16	Starter
17	X148
18	Fuel Injector 8
19	X139
20	Ignition Coil 8
21	Ignition Coil 6
22	Ignition Coil 4
23	Fuel Injector 4
24	Ignition Coil 2
25	Fuel Injector 2
26	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 2 Exhaust
27	Camshaft Position (CMP) Sensor - Bank 2 Exhaust
28	Camshaft Position (CMP) Sensor - Bank 2 Intake
29	Camshaft Position (CMP) Actuator Solenoid Valve - Bank 2 Intake
30	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
31	Throttle Body

Fig 7: Identifying Left Side Of Engine Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Oil Pressure (EOP) Sensor
2	G107
3	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 2
4	Heated Oxygen Sensor (HO2S) - Bank 2 Sensor 1
5	Generator
6	G105
7	Mass Air Flow (MAF)/ntake Air Temperature (IAT) Sensor

Fig 8: Identifying Upper Center Of Engine Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Knock Sensor (KS) 2
2	Knock Sensor (KS) 2 Connector
3	Knock Sensor (KS) 1 Connector
4	Knock Sensor (KS) 1
5	Crankshaft Position (CKP) Sensor

Fig 9: Identifying Generator

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Generator

Fig 10: Identifying Engine Oil Pressure Sensor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Oil Pressure (EOP) Sensor

Fig 11: Identifying Right Side Of Engine Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	X182
2	X180
3	X186
4	Battery
5	Fuse Block - Underhood
6	Engine Oil Pressure (EOP) Switch
7	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1
8	Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 2
9	Engine Control Module (ECM) Connectors
10	X184

Fig 12: Identifying A/C Compressor Clutch

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	A/C Compressor Clutch

Fig 13: Locating Engine Oil Level Switch

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Engine Oil Level (EOL) Switch

Fig 14: Identifying A/C Refrigerant Pressure Sensor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	A/C Refrigerant Pressure Sensor

Fig 15: Identifying Rear Of Engine Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Throttle Body
3	Starter
4	X148
5	JX106
6	Engine Coolant Temperature (ECT) Sensor
7	Engine Coolant Heater
8	X188

Fig 16: Identifying Transmission Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transmission Control Module (TCM)
2	Automatic Transmission Input Shaft Speed (ISS) Sensor and Automatic transmission Output Shaft Speed (OSS) Sensor
3	Automatic Transmission Internal Mode Switch (IMS)

Fig 17: Identifying Exhaust Pipe Components

Courtesy of GENERAL MOTORS CORP.

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

Fig 18: Identifying Rear Exhaust Area Components (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Exhaust Tail Pipe Flow Valve Control Module
2	Exhaust Tail Pipe Flow Control Valve Solenoid
3	Exhaust Control Valves
4	Rear Compartment Panel

Fig 19: Identifying Fuel Tank Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Tank - Left
2	Fuel Pump and Sender Assembly
3	X420
4	Fuel Tank Pressure (FTP) Sensor
5	Fuel Level Sensor
6	Fuel Tank - Right
7	X460
8	X459