1998 Chevrolet Truck Won't start

Changed fuel pump three times not enough pressure to bring fuel to start I also had changed fuel filter and fuel line we disconnected battery cables to reset and that did not help we have been told that this is a common problem with this model we have been stranded out of time with this problem the first time we changed the fuel pump we changed fuel filter and fuel line it ran ok for 125 miles and stranded us and we had to tow it home since then we have changed the fuel pump twice because everyone insists its the fuel pump but there must be something else that is stopping the fuel from the pump to where it's suppose to go if you have any ideas we would appreciate it thank you