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.
2006 Chevrolet Epica LTFACTORY OEM SERVICE PROCEDURE
Engine Control System - 2.5L (LBK) - Service And Repair
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Repair Instructions
- Engine Control Module (ECM) Replacement
- Idle Learn Procedure
- Engine Coolant Temperature (ECT) Sensor Replacement
- Intake Air Temperature (IAT) Sensor Replacement
- Manifold Absolute Pressure (MAP) Sensor Replacement
- Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2
- Knock Sensor (KS) Replacement
- Accelerator Pedal with Position Sensor Replacement
- Throttle Body Assembly Replacement
- Throttle Body Service
- Fuel Pressure Relief Procedure
- Fuel Pressure Gage Installation and Removal
- Fuel Filter Replacement
- Fuel Tank Draining Procedure
- Fuel Rail Assembly Replacement
- Fuel Pressure Regulator Replacement
- Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement
- Ignition Coil(s) Replacement
- Spark Plug Inspection
- Spark Plug Replacement
- Crankshaft Position (CKP) Sensor Replacement
- Camshaft Position (CMP) Sensor Replacement
- Exhaust Gas Recirculation (EGR) Valve Replacement
- Exhaust Gas Recirculation (EGR) Valve Pipe Replacement (Intake)
- Exhaust Gas Recirculation (EGR) Valve Pipe Replacement (Exhaust)
- Intake Manifold Tuning (IMT) Valve Actuator Solenoid Replacement
- Intake Manifold Tuning (IMT) Valve Actuator Replacement
- Intake Manifold Tuning (IMT) Valve Vacuum Reservoir Replacement
- Air Cleaner Element Replacement
- Air Cleaner Assembly Replacement
- Description and Operation
- Engine Control Module (ECM) Description
- Notes
- Comprehensive Component
- Input Components
- Output Components
- Passive and Active Diagnostic Tests
- Intrusive Diagnostic Tests
- Warm-Up Cycle
- Freeze Frame
- Failure Records
- Common OBD II Terms
- Primary System-Based Diagnostics
- Oxygen Sensor Diagnosis
- Misfire Monitor Diagnostic Operation
- Misfire Counters
- Fuel Trim System Monitor Diagnostic Operation
- Fuel Trim Cell Diagnostic Weights
- Fuel System Description
- Fuel System Overview
- Fuel Tank
- Fuel Fill Pipe
- Fuel Filler Cap
- Fuel Sender Assembly
- Fuel Level Sensor
- Fuel Pump
- Fuel Strainer - Typical
- Fuel Filter - Typical
- Fuel Feed and Return Pipes
- Nylon Fuel Pipes
- Quick-Connect Fittings
- Fuel Pipe O-Rings
- Fuel Rail Assembly
- Fuel Injectors
- Fuel Pressure Regulator Assembly - Typical
- Fuel Metering Modes of Operation
- Starting Mode
- Clear Flood Mode
- Run Mode
- Acceleration Mode
- Deceleration Mode
- Battery Voltage Correction Mode
- Fuel Cutoff Mode
- Fuel Trim
- Throttle Actuator Control (TAC) System Description
- Evaporative Emission (EVAP) Control System Description
- Electronic Ignition (EI) System Description
- Knock Sensor (KS) System Description
- Exhaust Gas Recirculation (EGR) System Description
- Crankcase Ventilation System Description
- Air Intake System Description
- Engine Control Module (ECM) Description
- Special Tools and Equipment
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.