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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1190 (ENGINE CONTROLS AND FUEL - 6.6L - DTC P1224 TO DTC P2463)DTC P2269CIRCUIT/SYSTEM TESTING
2006 Chevrolet Suburban C2500, 6.0 U
Circuit/System Testing
2006 Chevrolet Suburban C2500, 6.0 USECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If any DTCs other than P2269 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
IMPORTANT:
The WIF lamp should be illuminated with this DTC. If the WIF lamp is not illuminated, refer to Water-in-Fuel Lamp Always On
.
- Turn OFF the ignition and drain the fuel filter. Refer to Water-in-Fuel Draining .
- Turn ON the ignition and clear the DTC.
- Start and run the engine.
- If this DTC resets, test for fuel contamination. Refer to Contaminants-in-Fuel Diagnosis .
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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.