Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Chevrolet HHR L4-2.2LFACTORY OEM SERVICE PROCEDURE
Powertrain Management: Locations
Engine Controls Component Views
Fuel Tank Components
1 - Fuel Tank
2 - Fuel Pump and Sender Assembly
3 - Fuel Tank Pressure Sensor
4 - Evaporative Emission (EVAP) Canister Vent Solenoid Valve
5 - Evaporative Emission (EVAP) Canister
Rear of Engine - L61
1 - Heated Oxygen Sensor (HO2S) 1
2 - Heated Oxygen Sensor (HO2S) 2
Top Front of the Engine
1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Fuel Injector 4
Front of the Engine (L61)
1 - Fuel Injector 1
2 - Fuel Injector 2
3 - Fuel Injector 3
4 - Manifold Absolute Pressure (MAP) Sensor
5 - Fuel Injector 4
6 - Evaporative Emission (EVAP) Canister Purge Solenoid
7 - Camshaft Position (CMP) Sensor - Intake
8 - Knock Sensor (KS)
9 - Engine Oil Pressure (EOP) Switch
10 - Crankshaft Position (CKP) Sensor
11 - Starter Solenoid
12 - Starter
13 - Intake Manifold
Manifold Absolute Pressure (MAP) Sensor (L61)
1 - Manifold Absolute Pressure (MAP) Sensor
Rear of the Engine Block (L61)
1 - Engine Coolant Temperature (ECT) Sensor
2 - Engine Block
Front of the Engine (L61)
1 - Throttle Actuator Control (TAC) Module
2 - Evaporative Emission (EVAP) Canister Purge Solenoid
3 - Engine Oil Pressure (EOP) Switch
4 - Crankshaft Position (CKP) Sensor
5 - Knock Sensor (KS)
6 - Starter
7 - Starter Solenoid
Left Side of the Engine Compartment
1 - Transmission Control Module (TCM) (MN5)
2 - LF Strut Tower
3 - Engine Control Module (ECM)
4 - Electronic Brake Control Module (EBCM) (JM4/JL9)
5 - Fuse Block - Underhood Bracket
Left Side View of Engine
1 - Ignition Coil Module 1
2 - Ignition Coil Module 2
3 - Ignition Coil Module 3
4 - Ignition Coil Module 4
5 - Fuel Rail
6 - Fuel Injector 1
7 - Fuel Injector 2
8 - Fuel Injector 3
9 - Fuel Injector 4
10 - Throttle Actuator Control (TAC) Module
Mass Air Flow (MAF)/Inlet Air Temperature (IAT)
Sensor
1 - Mass Air Flow (MAF)/Inlet Air Temperature (IAT) Sensor
Pedal Assemblies
Pedal Assemblies:
1 - Clutch Pedal Position (CPP) Switch (M86)
2 - Clutch Start Switch (M86)
3 - Stop Lamp / Torque Converter Clutch (TCC) Switch / Cruise Release Switch
4 - Stop Lamp Switch
5 - Accelerator Pedal Position (APP) Sensor
6 - Floor Panel
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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