Fernando Giral

Thank you very much I will take a look at all these

Hello I have a Silverado 2011 5.3L flex fuel it seems that my fuel pressure is low I went to AutoZone to get the scanner it reads: -P0174 System to lean Bank 2 -P0171 System to lean bank 1 -P0174 System to lean bank 2 -P0171 System to lean bank 1 -P0174 System to lean bank 2 -P0171 System to lean Bank 1 it seems the best fix was changing the fuel pump. i changed the fuel pump yesterday but it struggles to turn on after a few hours after it has been on for a few minutes it will turn on normally, there seems to be no way to check the pressure on this truck I checked for any leaks in the fuel lines can any one help me?