Question

2000 GMC Sierra 1500 4.3L with engine codes P0463 and P0300, how can I fix it?

Answer 1

P0463 code is for the fuel level sensor. Sometimes when the fuel tank level gets too low or too high it will trigger the code. You should try clearing the code first, if the code comes back you may have to replace the fuel level sensor inside the fuel tank.

P0463 GMC Code - Fuel Level Sensor Circuit High Input
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