Cadillac Repair: heater controls, vacuum problem, search google

Question
I own a 02 STS Caddy and I have a problem with the defrost. Heat is red hot when the car warms up but comes out the vents only and nowhere else. Selector on the climate control allows you to change where heat goes such as vents,floor,defrost but nothing changes, still comes out the vents only. Is this a vaccuum gone bad? If so, where is it located under the hood, thanks

Answer
Hi Henry,

It definately sounds like a vacuum problem, but to be perfectly honest with you, being that all this stuff is computer controlled, I have no idea of where to tell you to look for the problem.

I say this quite often and feel it is good information. Either search google for "Helm" who prints the service manual for your car or get a manual from Ebay.

If you are keeping the car, it is a cheap investment to have a service manual for the car and that way, you can diagnose a whole host of problems.


Rob