Express 3/4 Ton Van V8-4.8L VIN V (2003)
The first phase also machined a case chamfer leading into the pump bore (2). The chamfer is designed to help eliminate possible 0-ring seal damage
during pump installation.
Phase two modified the case casting and the chamfer into the pump bore. The casting change left additional material in the surrounding pump bore to
allow deeper bore machining in order to create the necessary sealing surface for a new pump seal design. The leading surface into the pump bore was
also machined with a modified chamfer (1).
