On the early GM diesel trucks either a mechanical or an electric feed pump was used to supply a low pressure of fuel, typically around 5 PSI, to the mechanical injection pump. The part numbers vary according to the chassis style.
Applications:
1990-1991 GM 6.2L C/K Series Trucks
1994-1996 GM 6.5L G Series Vans
1990-1993 GM 6.2L G Series Vans
1994-1997 GM 6.5L P Series Vans
1990-1993 GM 6.2L P Series Vans