Trans problem - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-16-2007, 07:51 PM   #11
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All advise is greatly appreciated.

Trans is operating like it has since I bought the car, apparently normal.

Shifts into OD nice and smooth, does not freewheel like it did last night. As far as I can remember it has never freewheeled before either.

Going to take it on a longer drive now and see if it keeps on behaving itself.
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Old 09-19-2007, 08:58 PM   #12
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I finally got around to changing the trans fluid today as well as the filter and pan gasket. Many thanks for the techie who wrote this:

http://www.bonnevilleclub.com/forum/...de=article&k=9

Anyway, I put half a can of SeaFoam in the trans about 200 km ago. Weather didn't cooperate for a speedier change. Before I added the SeaFoam the oil was a nice clean red colour. Today a dark brownish mess came out so I'm assuming that the SeaFoam worked as advertised.

I'll wait a few weeks and change it again since there was still a lot of oil in the converter.

I have a scanner coming that I bought on E-Bay, and Slug is going to send me a cable, then I'll be asking some more questions about what the results mean.
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Old 09-23-2007, 02:15 PM   #13
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Didn't put the whole can in? I always do. And yes, if you turned good fluid bad, thats a very good thing, but that also means you should have changed it twice. About 100 miles before you change it again, it probably wouldn't hurt to add in the other half of the trans tune.

I always change my fluid twice and filter once when I do my fluid. Wakes the transmission right up.

So hows it doing as far as drivability in comparison now?

Also, I noticed you changed the pan gasket....Were you not able to reuse the one that was on the transmission? Or was it cracked?

What did you replace it with? I hope it was not cork. Rubber is about the only recommended replacement, and the GM one is even better. If you did replace it with cork, put on a GM one next time you drop the pan.
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