[Eddy Cruze]

I thought they hook it up to a machine that exchanges the fluid, a flush.

Look for something like this from area dealers:

 

[Eddy Cruze]

Chevy specifically states to not do the old style power flush on these cars. A simple drain/fill procedure is all you need. That dealership is ripping off customers with their flush.

I have only done drain & fills on my cars although I thought some systems are sealed thus the reason for the flush. I also thought the flush was 'new style' compared to the old style drain & fill, and I didn't know those machines provided power flushing, just fluid replacement. In any case nationwide the Flush seems to be most popular at your local Chevy dealer, just type in Chevy Flush Service Special