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 849 (ENGINE CONTROLS AND FUEL - 2.4L (LAT) - TROUBLESHOOTING & DIAGNOSIS)INSPECTION/MAINTENANCE (I/M) SYSTEM CHECKCIRCUIT/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 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Observe the Engine DTC information with a scan tool.
- If a DTC is set that would prevent the I/M System Status tests from completing, diagnose that DTC before continuing. Refer to Inspection/Maintenance (I/M) System DTC Table .
- Review applicable service bulletins for software updates that would prevent the I/M System Status tests from completing.
- If a control module re-program or other repair is required, perform the Inspection/Maintenance (I/M) Complete System Set Procedure .
- Observe the I/M System Status indicators.
- If any I/M System Status indicators report NO, perform the Inspection/Maintenance (I/M) Complete System Set Procedure .
IMPORTANT:
Many DTC related repairs will instruct the technician to clear the DTC information. Clearing the DTC will reset the I/M System Status indicators to NO. Performing the I/M Complete System Set Procedure will set each of the I/M System Status indicators to YES.
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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.