Celebritys and 6000s were discontinued 6 years before the Ciera and Century. Also, the last year of the Celebrity, they only had a station wagon model in the lineup.
Well the Celebrity was done away with after 1990, the 6000 hung on for one more year, and was dropped after 1991.
I bought a 1989 Chevy Celebrity Rurosport in Jan 2011 for $1200. It was a one owner car to an older lady, and it only had 44,000 miles on it. It now has 61,000 on it, and is a good car.
It was pretty much in perfect condition, because it was always garage kept. She hadn't driven the car for a year, so when I bought it, I had to replace the fuel pump, which I got on eBay brand new for $20. I also had to replace A/C compressor and the other A/C parts, and that was $500. But in the end, this has turned out to be a good car for me.
I have a 1989 Chevy Celebrity. I bought it last July for $2,000 and it only had 33K on it. I ended up replacing the radio, muffler, and alternator, but everything else is original... one previous owner. Runs like a beast and the interior is comfortable. I'm hoping to get it repainted, because I'll have it for a while, there is rust at the bottom of the doors, and the paint is wearing in some places.
I love this car, truly! At first I was wary, because I was used to driving compact cars (with ABS and power steering, which my Celeb doesn't have), but now that I've driven it for a while, it makes me feel safer than in a smaller car.
Actually, your "Celeb" does have power steering (it was standard equipment in '89). If it steers like it has manual steering, then either your power steering pump is out of fluid, or you have the infamous steering rack issue, which was endemic to the A-body cars.
If it is the latter, the problem will only worsen until you are unable to turn the steering wheel at all, and the only solution is replacement of the steering rack.