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 Uplander V6-3.9LFACTORY OEM SERVICE PROCEDURE
Powertrain Management: Locations
Engine Controls Component Views
Left Side of I/P Components
Left Side of I/P Components:
1 - Body Control Module (BCM)
2 - G201
3 - Brake Pedal Position Sensor
4 - Accelerator Pedal Position (APP) Sensor
5 - Data Link Connector (DLC)
6 - Body Harness
7 - Park Brake Switch
8 - BCM - C2
9 - BCM - C1
10 - BCM - C3 (Steering Column Harness)
Air Intake System (LGD/LZ9)
1 - Mass Air Flow (MAF)/ Intake Air Temperature (IAT) Sensor
2 - Engine Control Module (ECM)
Front of the Engine (LGD/LZ9)
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
Fuel Rail (LGD/LZ9)
1 - Fuel Injector 1
2 - Fuel Injector 3
3 - Fuel Injector 5
4 - Fuel Injector 6
5 - Engine Coolant Temperature (ECT) Sensor
6 - S142
7 - Fuel Injector 4
8 - Fuel Injector 2
9 - Crankshaft Position (CKP) Sensor
10 - C102
Rear of the Engine (LGD/LZ9)
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
Behind Engine, Under Vehicle (LGD/LZ9)
1 - Heated Oxygen Sensor (HO2S) 2
2 - Catalytic Converter
Fuel Tank Components (SWB)
1 - Evaporative Emission (EVAP) Canister
2 - Evaporative Emission (EVAP) Canister Vent Solenoid Valve
3 - Fuel Tank
4 - Fuel Pump and Sender Assembly
5 - Fuel Tank Pressure (FTP) Sensor
6 - C305 Fuel Tank Harness to Body Harness
7 - S371
Fuel Tank Components (LWB)
1 - Fuel Tank
2 - Evaporative Emission (EVAP) Canister
3 - Evaporative Emission (EVAP) Canister Vent Solenoid Valve
4 - Fuel Tank Pressure (FTP) Sensor
5 - Fuel Pump and Sender Assembly
6 - C305 Fuel Tank Harness to Body Harness
7 - S371
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.