[HUMTECH]

If you still have the original single stage compressor there is a calibration update for the module for code c0711. ****Do not program a dual stage unit***** it will kill the module. If the calibration update does not correct the problem you will likely require a compressor replacment. The single stage unit is no longer available and you will have to upfit the dual stage unit. Requires a couple of new airlines. The dealer will know which ones you need. Until that code is cleared the trim height learn will not work, it requires that no codes are set current.