9-7X V8-5.3L (2005)
Pump Cover 2 (Pre-input speed sensor (ISS) models) - Manufactured 3/6/2005 to 7/16/2005: This pump cover is modified to accept a compact reverse
boost valve (219) and reverse boost bushing (220). The design change was necessary in order to prepare for the new input speed sensor (ISS) assembly
that will be packaged into the pump cover. This particular change created additional space below the valve area, so that the new pump cover 3 would
have the necessary room for the input speed sensor (ISS) connector. This compact design relocates the snap ring groove in the valve bore as explained
above. This design uses a smaller reverse boost valve and bushing and can be identified by the ring and groove markings. There are two types of boost
valves, standard and high performance, with a corresponding bushing. This cover may also be identified by the manufacturing features noted in the
illustration.
