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 Impala V8-5.3LFACTORY OEM SERVICE PROCEDURE
Knock Sensor: Locations
Engine Controls Component Views
Front of Engine (LS4)
Front Of Engine:
1 - Engine Coolant Temperature (ECT) Sensor
2 - Ignition Coil 1
3 - Ignition Coil 3
4 - Ignition Coil 5
5 - Ignition Coil 7
6 - Manifold Absolute Pressure (MAP) Sensor
7 - Throttle Body
8 - Engine Coolant Heater
9 - Knock Sensor (KS) Bank 1
10 - Engine Oil Level Switch
11 - Camshaft Position (CMP) Sensor
Rear of Engine
Rear Of Engine:
1 - Ignition Coil 7
2 - Throttle Body
3 - Ignition Coil 8
4 - Ignition Coil 6
5 - Ignition Coil 4
6 - Ignition Coil 2
7 - Heated Oxygen Sensor (HO2S) 1
8 - Knock Sensor (KS) Bank 2
9 - Crankshaft Position (CKP) Sensor
10 - Engine Oil Level Switch
11 - Valve Lifter Oil Manifold (VLOM) Assembly
Factory Service Tools
Use the Manual With the Right Hardware
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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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