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01/12/2020 9:20 am
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I have a 2002 GMC Sierra 1500 HD with the 6.0 Vortec engine. Recently it seemed as if it had no power, as it would not go above 30 or 40 MPH. It has a low idle of around 500 RPM and runs really rough. It is throwing P0174, P0300 and P0101 codes. I changed the plugs and wires, and it didn't really seem to help. I also changed the MAF sensor out with a new one. Before I go throwing any more parts at it, is there an easy or common fix with these Vortecs?
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01/12/2020 10:02 am
You probably don’t get enough fuel. Change the fuel filter and check the fuel pump.
