Buick produced the Skylark from 1953 all the way up to 1979. They did not produce it every year. The only years that the Skylark was produced were: 1953-1954, 1961-1972, 1979. The Skylark was still produced after 1979, but it was bought out by General Motors.
I have a 1995 Skylark and the gasket was replaced about 4 years ago and I've had no trouble at all. It's a V-6 3100 engine.
I think it's once every two years or 15,000 miles.
The '92 and '97 cars had a different design but the windshields may be the same. You should check with an auto glass place.
It could be a vacuum leak. Check all those air hoses in there. It's a good idea to replace them every few years or so.
If it's properly connected, it's just worn-out. When you get it replaced, make sure you get a new one and not a rebuilt alternator. I had a brand new Bosch alternator put in my 1995 Skylark about 4 years ago and it's worked like a charm ever since.
Try Amazon.com to see if they have Buick repair manuals for those years. Look for Chilton's or Haynes manuals. They have them dirt cheap. Ebay might have them too.
It's under the steering column, near the brake and says "FUSES" on it.... Try Amazon or eBay for a Chilton's manual for cars in these years. They're probably pretty cheap by now.
This is a problem that plagues all the N-body cars of these years from 1992-1998. You'll just have to stuff towels into the firewall on the passenger's side right where it meets the carpet and change it every two weeks or so. My 1995 Skylark has the same problem and GM never recalled it. The Skylark is a good car but had I known of this, I'd have gotten the Regal instead.
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I think one of those Chilton's books has the answer. I know they make one for GM cars for these years. Amazon may have used copies listed. Also try any big auto stores around.
During the years 1495 and 1498
I don't think you have to take off the whole dash. Try getting a repair manual for GM cars for these years. Any big auto store may have one from Chilton's. Also try Amazon or eBay.