air suspension

I think the rear shocks are leaking on my 88 Vic LX. It has the auto -leveling air shocks and the compressor is running quite a lot recently. Are there after market air shocks available as alternatives to buying overpriced replacements from the dealership?
Dennis

Does the compressor inflate the shocks or the air-bag style springs?

You mean it has self leveling SPRINGS and not shocks, right? I didn't even know that air springs were an option back in 88.

Any CV/GM with broken air springs can replace them with steel coil springs, which come in the base model CV/GM.