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.
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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 10 (ENGINE CONTROL SYSTEM - 3.5L - TROUBLESHOOTING & DIAGNOSIS)
2006 Pontiac G6 GTP, 2D Coupe, Standard
Section 10 (Engine Control System - 3.5L - Troubleshooting & Diagnosis)
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Section 10 (Engine Control System - 3.5L - Troubleshooting & Diagnosis)
WARNING: This page is about a different variant/trim than selected.
- Symptoms - Engine Controls
- Symptoms - Fuel System
- Symptoms - Ignition System
- Symptoms - Sensors/Systems
- Poor Fuel Fill Quality
- Malfunction Indicator Lamp (MIL) Diagnosis
- Engine Cranks but Does Not Run
- Crankshaft Position Sensor System Diagnosis
- Fuel Pump Electrical Circuit Diagnosis
- Fuel System Diagnosis
- Fuel Injector Diagnosis (w/CH47976)
- Fuel Injector Diagnosis (w/J39021 or w/Tech 2)
- Fuel Injector Coil Test
- Fuel Injector Balance Test with Special Tool
- Fuel Injector Balance Test with Tech 2
- Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)
- Manifold Absolute Pressure (MAP) Sensor Diagnosis
- Electronic Ignition (EI) System Diagnosis
- Inspection/Maintenance (I/M) System Check
- Inspection/Maintenance (I/M) Complete System Set Procedure
- Inspection/Maintenance (I/M) System DTC Table
- Service Bay Test
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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.