[mycbarnes]

Went and troubleshot it some. Ours doesn't have a blue A/C on/off button like you see on some cars. What is there is in the picture below, it's a push button arrangement and a cable for the heat/cool. A portion of the controls are vacuum lines that would be moving the flappers where the air is discharged. There are 2 push buttons for A/C mode. Max and fresh air. Pushing either in results in nothing. But if I push the A/C max button ever so slightly in, the evaporator blower will come on and it has it's proper 3 speeds. The buttons are not working properly internally. There is no power going to the compressor clutch and the condenser fans are not coming on under the coach. This could be a result of not enough freon in the system and a low pressure switch has the clutch and condenser fans locked out. I haven't found a low pressure switch on a freon line yet. Or a relay for the compressor.

So looking at the pictures, any one know what vehicle this control is from. I think it's Delco, but there's decades of their push button controls.