GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Engine Harness Components 1 of 5 (4.4L)


Object Number: 1689283  Size: LF
(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
Figure 2:

Engine Harness Components 2 of 5 (4.4L)


Object Number: 1689292  Size: LF
(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
Figure 3:

Engine Harness Components (4.4L)


Object Number: 1689296  Size: LF
(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
Figure 4:

Engine Harness Components 4 of 5 (4.4L)


Object Number: 1689299  Size: LF
(1)C182 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
Figure 5:

Engine Harness Components 5 of 5 (4.4L)


Object Number: 1689302  Size: LF
(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
Figure 6:

Behind Lower Left of the I/P


Object Number: 1358051  Size: LF
(1)Acceleration Pedal Position (APP) Sensor
(2)Acceleration Pedal
Figure 7:

Fuel Tanks


Object Number: 901394  Size: LF
(1)Fuel Tank - Left
(2)Fuel Pump and Sender Assembly
(3)C420
(4)Fuel Tank Pressure (FTP) Sensor
(5)Secondary Fuel Level Sender
(6)Fuel Tank - Right
(7)C460
(8)C459