1993BlackVette

Ok guys, next problem. If I turn on the a/c, or any air, it will run cold for a minute, turn hot for a while then back to cold. This cycle is all I can get out of her. It's a digital control. Also, the dealer mechanic changed the heater core. Could he have screwed anything up?

antfarmer2

Your compressor is most likely kicking on and off most likely low on freon

Cliff Harris

Run the HVAC diagnostics and see if you get anything interesting:

1993BlackVette

Thanks man! I will check this out first thing in the morning.

1993BlackVette

Nothing. So I guess I will check the freon next.

antfarmer2

Check your fill schader valve for leaks take the cap off and put your spite in and look for bubbles

desertmike1

Does this problem happen both while your idling in park, and driving the car?

1993BlackVette

Ok guys, I'm very confident it's the blower module. I put a retrofit kit on, and surprise, the dealer left the damn a/c bone dry. I'll keep you guys posted.