Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, my name is***** you for the question. Can you tell me if the light would come on under a certain driving condition such as under load.
Thank you. The most common causes I have seen with this truck that causes this is the fuel rail pressure sensor or the harness to the sensor. I have seen a lot of these harnesses fail and cause incorrect signals.
Did he replace the wiring harness also?
Then they need to replace the harness. Did they verify the fuel pressure reading with a mechanical gauge or just go off of the scan tool?