GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2007 🢒 H3 🢒 Engine 🢒 Engine Controls and Fuel - 3.7L 🢒 Engine Controls Component Views
Figure 1:

Secondary Air Injection (AIR) Components
Object Number: 1850289 Size: LF
(1)Secondary Air Injection (AIR) Solenoid
(2)Secondary Air Injection (AIR) Pump Relay
(3)Secondary Air Injection (AIR) Pump
Figure 2:

Engine Controls Components
Object Number: 1564210 Size: LF
(1)Powertrain Control Module C1 (Body Harness)
(2)Powertrain Control Module
(3)Heated Oxygen Sensor (HO2S) 2
(4)Fuse Block - Underhood
(5)Engine Harness
(6)Heated Oxygen Sensor (HO2S) 1
(7)Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
(8)Powertrain Control Module C3 (Engine Harness)
(9)Powertrain Control Module C2 (Engine Harness)
Figure 3:

Engine Components - Right Side (L52)
Object Number: 1563748 Size: LF
(1)Manifold Absolute Pressure (MAP) Sensor
(2)Throttle Body
(3)Ignition Coil 3
(4)Ignition Coil 2
(5)Ignition Coil 1
(6)Camshaft Position (CMP) Actuator Solenoid - Bank 1 Exhaust
(7)Engine Oil Pressure (EOP) Switch
(8)Heated Oxygen Sensor (HO2S) 1
(9)Engine Coolant Temperature (ECT) Sensor
(10)Engine Coolant Temperature (ECT) Sensor Connector
(11)C101 Fuel Injector Harness to Engine Harness
(12)Ignition Coil 5
(13)Ignition Coil 4
Figure 4:

Engine Components - Left Side (L52)
Object Number: 1563749 Size: LF
(1)Evaporative Emission (EVAP) Canister Purge Soleniod Valve
(2)Starter Solenoid
(3)Knock Sensor (KS) Bank 2
(4)Crankshaft Position (CKP) Sensor
(5)G102
(6)G103
(7)Engine Block Heater
(8)Camshaft Position (CMP) Sensor - Intake
(9)Camshaft Position (CMP) Sensor - Exhaust
Figure 5:

Fuel Injectors
Object Number: 1640612 Size: LF
(1)Fuel Injector 1
(2)Fuel Injector 2
(3)Fuel Injector 3
(4)Fuel Injector 4
(5)C101 Fuel Injector Harness to Engine Harness
(6)Fuel Injector 5
Figure 6:

Lower Left Side of I/P
Object Number: 1554750 Size: LF
(1)Clutch Start Switch (MA5)
(2)Accelerator Pedal Position (APP) Sensor
(3)Steering Wheel Position Sensor (JL4)
(4)TCC Brake/Cruise Release Switch
(5)Stop Lamp Switch
(6)Park Brake Switch
(7)Clutch Release Switch (MA5)
Figure 7:

Left Middle Side of Frame Rail
Object Number: 1554760 Size: LF
(1)Fuel Tank Pressure (FTP) Sensor Connector
(2)Fuel Pump and Sender Assembly
(3)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(4)Chassis Harness
(5)Fuel Tank