Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
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The reverse boost valve bushing
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A new reverse boost valve
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A new pressure regulator spring retainer
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The added isolator pressure regulator spring
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The pressure regulator spring
3. Install the pre-assembled parts into the pump bore.
4. Install the reverse boost valve bushing retainer ring while holding the reverse boost valve bushing in place. Ensure the retainer ring (2) is in the
groove.
5. Install the transmission filter.
6. Fill the transmission to the proper level with Dexron(R) III transmission fluid.
