Somehow ride level sensor got broken letting rear down to stop, plastic parts on an off road vehicle, go figure, anyway i manually positioned it, compressor came on air up to correct level, kicked off. Sent the wife to local GM Stealer for repair-they ordered part and replaced @$225- i dropped her off to get h2, she said service air suspension light was on, next day i check it out and nothing will work, compressor indicator lights, nothing, so i returned to stealer thinking it needed to a reset of fault, no, they tell me control module has went out- im thinking this is very strange because i used compressor the day before now nothing works and they want $576 for controller. I sthere anywhere else to get these parts are any other suggestions?