ride height issues

[bfournier]

I have a 2003 with four wheel air self leveling. The front drivers side seemed to have a sag lower than the other three suspension heights so I thought perhaps there was a leak in the airbag. I have tested the airbag by raising up the vehicle to it highest height marked the ride height on the airbag and let it sit overnight at that height. It holds just fine al night long when checked the next morning. I assume there is a sensor on each wheel for ride height that could be bad or perhaps a trip to the stealer would tell me the normal ride height is off for the that wheel. I am looking for some help for DIY sensor replacement or cleaning (if thats even possile). Can anyone send me in the right direction?