Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
7. If equipped with RPO HP2, install the HCM.
8. If equipped with RPO NYS, install the harness ground clip to the PCM cover.
9. Connect the negative battery cable.
10. If a NEW PCM was installed, program the PCM. See: Testing and Inspection/Programming and Relearning
