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 CARSECTION 1181 (HYBRID ENGINE CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P0AFACIRCUIT/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 car, the 2008 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
SGCM 36 volt Output Terminal Circuit Low
- If DTC is history, refer to Testing for Intermittent Conditions and Poor Connections .
- Ignition ON, test for greater than 22 volts at the SGCM battery positive 36 volt output voltage stud.
- If less than the specified value, test the 36 volt cable for an open/high resistance or short to ground.
- If greater than the specified value, replace the SGCM.
Hybrid Battery Pack Voltage Low
- If DTC is history, refer to Testing for Intermittent Conditions and Poor Connections .
- Gain access to the hybrid battery pack. Refer to Hybrid Battery Service Disconnect/Connect .
- Ignition OFF, test battery pack voltage for greater than 22 volts.
- If less than the specified value, replace the battery pack.
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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.