How Do I Install Auto Climate Control (& OnStar) in a 20
I have a 2000 Bonneville SE with standard climate control. I want to install automatic climate control. I know this is a complicated proceedure. However, I am willing to take on the task. Does anyone know where to buy (other than eBay, whichh never has anything, and a junk yard) an automatic climate control unit plus the sensors. Also, does anyone know how to hook it up? If not, does anyone know where I can look to find out? I am also looking for a complete OnStar system as well.