air suspension rear leveling sensor on 2003 GMC Envoy

How to adjust sensors.My compressor went out that made the back go all the way down. When new compressor was installed the sensors made the air bags pump too high.The air bags are maxed out.When the back end was down Maybe it pushed the sensor down I daont know HELP Please, Richard P.S. thanks for any help what ever happened to the sensors it happened to both because the pumped exacly the same on both sides

Asked by for the 2003 GMC Envoy
I would go here for some instructions on how to re-set the level sensor