Yes it is ATF
We found the problem! After a thorough search, we saw that the transmission line on the left side when it goes around the transmission case had been rubbing against the case and had created a small pinhole. These lines should not be against the transmission case or rubbing against anything. Not sure if the guy who replaced the rack and pinion didn't align the lines right or it was made that way but that is where it was leaking out. I brought it to a Pontiac dealer last night and they will correct the problem hopefully. Not sure if they have to replace the lines or can solder something in there to close that hole. But I hope they do something to pull it away from the trans case. Metal rubbing on metal is not very wise! The car has 65,000 miles on it so I think I am out of the warranty period. Not sure if the engine/transmission are covered for a longer period or if these lines are even part of that coverage, but I think it should be. I'll let you know on the cost. Had to get a rental in the meantime.