Sierra 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
![background image](/gmc/sierra_1500_2wd/v8-5.3l_vin_z_flex_fuel/Page-1108004.png)
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