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 MANUALSGMC2010SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1628 (HYBRID CONTROLS - 3.6L (HP5) - DTC P16F9 TO DTC P2797)DTC P16F9CIRCUIT/SYSTEM TESTING
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6
Circuit/System Testing
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for DTC P0562 or any communication DTCs.
- If the specified DTCs have set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Ignition OFF.
- Wait 2 minutes.
- Disconnect PIM connector X1.
- Wait 2 minutes.
- Reconnect PIM connector X1.
- Ignition ON, retest for DTC P16F9.
- If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
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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.