Was googling and came across this video about your HVAC controls. Lots of interesting info if not specifically answering the compressor question.
And another forum discussion problems with heat that sounded like it might shed some light on why you may not be getting full heat.
http://forums.corvetteforum.com/c4-t...t-no-heat.html
I'm guessing the compressor is on all the time and the A/C controls just block or add heated air according to the temp setting.
Quote:
Originally Posted by Flavien
There is a pic of a typical climate controller in a LT1 C4...
"AUTO" makes the heat fluctuate automatically to maintain the temperature in the car, while the other "auto" between the two up and own arrows makes the blow of the fan fluctuate automtically instead of the temperature itself...
I'll check, but for now I don't think I can run both at same time 
-4F now, but supposed to be -20F later on tonight... My battery will love that hahaha |