This in in regards to a '98 Olds LSS, but I'm posting here because the ELC (Electronic Leveling Control) system spans several GM models.
A few weeks ago, I heard, for the first time, the ELC compressor chattering away beneath the vehicle. I looked underneath to investigate and noticed that the air tubes had rotted. It was no longer attached to the nipple directly on the compressor, and there were holes in the tubes beyond the t-fitting running to the struts (at least that'* where I assume they run).
I replaced the tubes, but I still don't think the system is functioning properly. The compressor comes on at startup and runs for a long time (10-15 minutes, at least) before finally shutting off, regardless of whether or not there is a load in the trunk or back seat.
Honestly, I have no idea how long the air tubes have been rotted. I've owned the car for about 1 1/2 years and I live on a dirt road (2 miles to the nearest paved road). I'm wondering if the compressors (or other components) have filled up with dust.
After reading several threads in this forum, I think the electronic components are probably functioning properly or the compressor wouldn't run at all. I think the compressor keeps running because no air is getting to the struts, so the vehicle height doesn't change and the height sensor arm never rotates, which would shut off the compressor.
So, can the compressor can be cleaned and serviced? I suppose I could simply replace it, but it would be a lot easier on my wallet if I could fix it.
Also, it seems many here have had problems locating a replacement compressor. And if it can be located, it is outrageously expensive. I know several folks have had one pulled at a salvage yard, but others have expressed skepticism about the condition of used ones because of environmental driving conditions. I ran across an after-market company that manufactures this part, so I thought I'd share the link:
Still not cheap, but half the price of several quotes I've seen.
Anyway, any advice/expertise would be appreciated.