GMC Terrain fuel level sensor failure indicated by error code P0463, resolved with fuel sending unit replacement on GMC Terrain

Some GMC Terrain owners report experiencing issues related to error code P0463, which typically indicates a problem with the fuel level sensor circuit. This can lead to inaccurate fuel gauge readings and various driving difficulties. Owners have noted that this error code may be triggered by several factors, including a faulty fuel level sensor, damaged body computer, PCM problems, or a malfunctioning smart fuse box. A common solution reported by owners is the replacement of the fuel sending unit, which is part of the fuel level sensor system. By addressing the fuel sending unit, owners can resolve the inaccurate fuel level readings and other related symptoms associated with the P0463 trouble code.