Guys, there is another alternative to complete rad replacement - get only the plastic tank replaced. I took my rad to a rad shop, and he replaced the driver side tank, cleaned and pressure tested it (they must use a geniune GM tank to rad gasket, though). Cost me less than 1/2 of the new rad price. Some opinions are that it is better to do this than get a new rad since the OEM rads are the highest quality.
Put it in, and seems to be working like a charm. I did manage to damage the transmission line that goes into the lower rad since it was rusted. Got the replacement at the dealer.
BTW, I went back to green
(Sorry, don't mean to fire up any further debate).