Rear Drop Shackles w/CCD?

[McGuyver]

I just saw the post on an experience leveling w/CCD. So has anyone with CCD installed lowering shackles? Any issues or reprograming necessary? Still waiting on my build date but thinking I may want to lower the rear 1.5” or so….

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[Snakebitten]

I suspect if you alter the height of the truck by some percentage you will throw a DTC in the VDM module.
There is a calibration utility in FDRS. Perhaps it is intended to adjust for this type of alteration?