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 MANUALSCHEVROLET2015EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN BREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISDATA COMMUNICATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC U1814: POWERTRAIN HIGH SPEED COMMUNICATION ENABLEACTION TAKEN WHEN THE DTC SETS
2015 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN B
Action Taken When the DTC Sets
2015 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN BSECTION Action Taken When the DTC Sets
- The modules use a default value for the missing parameters until the next ignition cycle.
- The modules is never signaled, therefore the specific subsystems will not function.
- The vehicle may not start.
RENDER: 1.0x
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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.