Sierra Classic 1500 2WD V8-5.3L Hybrid (2007)
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. Refer to Control Module References. See: Testing and Inspection/Programming and Relearning