Pontiac: Heater Valve, buick skylark, lengthy detail

Question
Where is the heater valve located on a 1996 Buick Skylark?

Answer
There is NONE. What is the problem ?. Explain in LENGTHY DETAIL.

What mechanical work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made.


thomas