Escalade Air shocks

I have an 04 Escalade ESV. I had a dealer replace the air compressor and the left air shock. They also replaced a cable and an air tube.

Now I noticed that the compressor cycles approx every 3 minutes. I also hear air leaking. The dealer thinks it's normal.

Does anyone know anything about this?

I don't think it should cycle so much and I don't think I should hear air leaking.

Any comments Welcome.

Driver101