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 12 (ENGINE CONTROL SYSTEM - 2.4L - DTC P0010 TO DTC P0341)DTC P0300-P0304CIRCUIT/SYSTEM TESTING
2006 Pontiac G6 GTP, 2D Coupe, Standard
Circuit/System Testing
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Operate the engine within the conditions listed in the Freeze Frame Failure Records.
- A current misfire should not be indicated.
- If a single cylinder Current Misfire is indicated, inspect the following components of the affected cylinder for proper operation:
- The ignition coil-Refer to Electronic Ignition (EI) System Diagnosis .
- The spark plug-Refer to Spark Plug Inspection .
- The fuel injector-Refer to Fuel Injector Diagnosis
.
- If more than 1 cylinder is randomly misfiring, inspect the following components condition and operation:
- The vacuum hoses and seals-Refer to Emission Hose Routing Diagram .
- The throttle body and intake manifold
- The crankcase ventilation system-Refer to Crankcase Ventilation System Inspection/Diagnosis .
- The ECM grounds
- The exhaust system-Refer to Restricted Exhaust .
- The fuel-Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
- The spark plugs-Refer to Spark Plug Inspection .
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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.