2007 Chevrolet Uplander V6-3.9LFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Locations



Engine Controls Component Views

Front of the Engine (LGD/LZ9)

Factory service manual diagram



1 - Intake Manifold Tuning (IMT) Solenoid Valve
2 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve
3 - Throttle Actuator Control (TAC) Module
4 - Knock Sensor (KS) 2
5 - Starter Solenoid
6 - Starter Motor
7 - Engine Oil Pressure (EOP) Sensor
8 - Camshaft Position (CMP) Actuator Solenoid
9 - Camshaft Position (CMP) Sensor

Rear of the Engine (LGD/LZ9)

Factory service manual diagram



1 - Throttle Actuator Control (TAC) Module
2 - Manifold Absolute Pressure (MAP) Sensor
3 - Ignition Control Module (ICM)
4 - Heated Oxygen Sensor (HO2S) 1
5 - Knock Sensor (KS) 1
6 - Block Heater
7 - Crankshaft Position (CKP) Sensor
8 - Engine Oil Level Switch
9 - Engine Coolant Temperature (ECT) Sensor
Factory Service Tools

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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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