Engine Controls Component Views

Fig 1: View Of Engine Harness Components - 1 Of 5 (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 Sensor (BPS)
5	Inlet Air Pressure (IAP) Sensor
6	Manifold Air Temperature (MAT) Sensor
7	Vacuum Bypass Valve Solenoid
8	Camshaft Position (CMP) Actuator Solenoid - Bank2 - Intake
9	Camshaft Position (CMP) Sensor - Bank2 - Intake
10	Camshaft Position (CMP) Sensor - Bank2 - Exhaust
11	Camshaft Position (CMP) Actuator Solenoid - Bank2 - Exhaust
12	Mass Air Flow (MAF) Sensor
13	Brake Pressure Modulator Valve (BPMV)
14	Electronic Brake Control Module (EBCM)
15	Variable Effort Steering Actuator
16	Camshaft Position (CMP) Actuator Solenoid - Bank1 - Exhaust
17	Camshaft Position (CMP) Sensor - Bank1 - Exhaust

Fig 2: View Of Engine Harness Components - 2 Of 5 (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	C148 Engine Harness to Knock Sensor/Crankshaft Position Jumper Harness
2	Knock Sensor (KS) 1
3	Fuel Injector 8
4	C139
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	Manifold Air Temperature (MAT)/Intake Air Temperature (IAT) Sensor 2
15	Fuel Injector 1
16	C140
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 3: View Of Engine Harness Components - 3 Of 5 (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	Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor

Fig 4: View Of Engine Harness Components - 4 of 5 (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	C181 Engine Harness to I/P Harness
2	C180 Engine Harness to I/P Harness
3	C186 Engine Harness to Forward Lamp Harness
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	C184 Engine Harness to Transmission Harness

Fig 5: View Of Engine Harness Components - 5 Of 5 (4.4L)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Evaporative Emission (EVAP) Canister Purge Solenoid Valve
2	Throttle Actuator Control (TAC) Module
3	Starter
4	C148 Engine Harness to Knock Sensor (KS)/Crankshaft Position (CKP) Sensor Jumper Harness
5	Splice Pack SP106
6	Engine Coolant Temperature (ECT) Sensor
7	Engine Coolant Heater
8	C188 Engine Harness to Starter Jumper Harness

Fig 6: Behind Lower Left Of I/P Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Acceleration Pedal Position (APP) Sensor
2	Acceleration Pedal

Fig 7: Fuel Tanks Component View

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Fuel Tank - Left
2	Fuel Pump and Sender Assembly
3	C420
4	Fuel Tank Pressure (FTP) Sensor
5	Fuel Level Sensor - Right
6	Fuel Tank - Right
7	C460
8	C459