Mushy tranny - 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 02-20-2006, 12:25 PM   #1
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I think immenient tranny failure is in my near future.

The shifts are getting sloppy. I can definitely say that it doesn't "snap" into 2nd gear from 1st. All the others are the same way. The nice thing is that it'* smooth, but alarming smooth!

Is there anything I can do to extend the life of this bad dad? I've never had it flushed and won't at this point. The car has no mods. Bone stock. She'* got 141,000.

With that many miles, would there be any harm in dropping the pan and changing the filter?

My next concern is that next week I have to take it to New Jersey. Given that, should I do my fluid change (if recommended) before or after that 1,600 mile round trip?
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Old 02-20-2006, 12:28 PM   #2
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changin the fluid may give you some more time. it helped mine for a day or so then all the fluid was burnt again. id do it.
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Old 02-20-2006, 12:31 PM   #3
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yup, do the fluid drop and filter. Refill with new fluid but leave a quart low and put in a quart of Lucas tranny additive.
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Old 02-20-2006, 12:33 PM   #4
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Quote:
Originally Posted by sonoma_zr2
yup, do the fluid drop and filter. Refill with new fluid but leave a quart low and put in a quart of Lucas tranny additive.
Ahh.... Good idea. Never thought about the Lucas.
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Old 02-20-2006, 12:34 PM   #5
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Quote:
Originally Posted by vital49
Quote:
Originally Posted by sonoma_zr2
yup, do the fluid drop and filter. Refill with new fluid but leave a quart low and put in a quart of Lucas tranny additive.
Ahh.... Good idea. Never thought about the Lucas.
I know it has helped mine.
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Old 02-20-2006, 12:35 PM   #6
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just don't use synthetic tranny fluid....
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Old 02-20-2006, 12:47 PM   #7
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Vital my 96 has a lot softer shifting characteristic than the 90 SSE but obviously you have noticed a difference.
Your filter could be getting clogged thus lowering the pump pressure.
Don't know about the Lucas but I have used a Qt. of B&M Trick shift at fluid changes with good results.
Its a blend of extreme pressure agents and shift improvers that will provide improved shift feel.
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Old 02-20-2006, 01:36 PM   #8
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The Ditchhopper is doing the same, according to Ditchboy who drives it. He put in that TransX stuff....not sure if it made a dif or not. I figured it was just his driving that was creating the problem.....
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Old 02-20-2006, 01:58 PM   #9
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I'm on board with the filter and lucas. Did the same to mine. Didn't have funny feeling shifts thought.

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Old 02-20-2006, 07:32 PM   #10
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Yup, mine is also that way. I'm going to do a complete flush and filter change a week before my trip. I suggest you do the same cause if you're tranny is bad it will likely fail almost immediatly after its serviced. That way you'll have a couple days to get a new one before you're trip. VS not doing it and having it fail on you're trip.
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