What a week it has been. First, my computer crashes,(finally got it back up) and Tuesday, I got a CEL, which went away the next day. Yesterday, my transmission started making this whining noise. First start up, its quiet, then after it warms up, it will whine at idle in Park. All gears whine. Fluid is slightly brown. Gonna take it in maybe Monday for a flush. Anything else I could do? Wish for a new tranny to plop onto my doorstep? My neighbor works at the local GM shop, and says he will try to bring his scanner over today to look at those codes.

Now, when it shifts, it seems to hesitate between gears. Just ever so slightly.

Sounds like the neighbor is the best thing for you right now. See what the codes are and probably the flush.

I'd get that filter changes as well with the flush. No point to run good fluid thru a dirty filter

Call me crazy...but are you sure it'* your tranny whinning? At this point you don't know if the code is related to the transmission.

The whine could very well be from a pulley on an accessory. Or, it could be the power steering pump.

I'm an idiot. I misread the dipstick this morning, and thought the shady area on the stick meant it was at the proper level. (some say not to add until bottom of shady area). So, I dumped half a quart of new fluid in it and started it up. The whine immediately went away. Still gonna get the tranny serviced and have that code looked at.

No one is calling you an idiot. That noise can come from anything; there are a lot of moving parts in a running engine

OK, I JUST went back out to tinker with the car. Started it back up and changed gears a couple of times, whine/grinding noise came back. Took it around the block a few times, grind changed into a whine then the transmission started slipping. At slow speeds it feels like it trys changing gears.(while slipping). If anyone wants. I can go back out take a video of it and post it to my website for those that need true audio/visual.

Ok, just done that. Still no change.