My local GM dealer has offered me a (what I think is a new service) Terra Clean service.
It is proven to remove carbon deposits left from combustion. Improve gas mileage reduce repair costs... Along with this they offer Throttle body sevice. I was told they would clean throttle bore, plates and idle air passages.
Has any one heard of this, had it done, does anyone recommend it???
If any one knows any thing about this let us know of your experience

What was the cost of this?

A good Seafoam treatment can get lot'* of that combustion by-products out, and that'* about $6 a can.

Sounds like a seafoam. Pick up a can for $6 and do it yourself, save a ton.

160.00 bucks

http://www.terraclean.net/home.html

Just go to a auto parts place and pick up a can of seafoam. Same thing, way cheeper.