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Posts Tagged: Service Exhaust Fluid System

Service Exhaust Fluid System Message GM trucks

Service Exhaust Fluid P203D P21AB or P21B0 GM has issued service bulletins #PIP4887A and #12-06-04-002E to address a Service Exhaust Fluid System Message and trouble codes P203D, P21AB, or P21B0 on the trucks listed below. If you see the “Service Exhaust Fluid System” and a “See Owner’s Manual Now” message displayed on the instrument cluster and scan the vehicle and find trouble codes P203D, P21AB, and P21B0, this bulletin may apply to you. P203B  –  Reductant Level Sensor Performance, The ECM receives a serial data message from the reductant sensor module … Read More

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