Trans finally went at just over 200k - 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 03-24-2008, 04:06 AM   #1
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Default Trans finally went at just over 200k

Well the wife and I were on our way home from her moms tonight in the 95 and suddenly the car just lost power for a few seconds then came back. I had the cruise on and was heading up a pretty good hill. I quickly turned off the cruise and stepped on the throttle. The car started to climb as normal then suddenly lost power again. So I then dropped to D and it seemed to be ok except when I decelerated it would start to chatter. So I poped it back into OD and it went in but as soon as I let off it would chatter violently. So I put it back in D and got it to a gas station to check it over. By this time it was violently chattering worse and worse as I drove it. I checked the fluid and it was full but is burnt. I got back in and brake torqed it and it just chatters wile sitting there and the rpms were slipping to 2500 rpm. So what trans can I use in this car. I know it has to be the 3.06 ratio and a non HD but what years and cars should I be looking for? I am planning to go with one from a yard cause thats about all I can afford right now.
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Old 03-24-2008, 01:31 PM   #2
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Well, my buddy owns a transmission shop. I have a little over 200K on my 94 SE and he said he was surprised that I made it past 140K on the original transmission. He told me that when it finally dies, it would be better to rebuild the original than to use one from a junk yard.

If I remember correctly, he said something about the transmission and converter being "tuned" to the engine at the factory. A junk yard unit would work, but may not work smoothly.

Not sure how much longer I have. I have changed the fluid every 30K miles. Who knows...
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Old 03-24-2008, 03:37 PM   #3
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Yeah I am not sure about that one. I need to find a cross reference on the years and cars that will work in mine. I have a possible 94 donor but I dont know if a 94 will be the same as a 95. If anyone has any cross reference for the 95 SE trannies it would be greatly appreciated.
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Old 03-24-2008, 04:11 PM   #4
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Here is the deal...

You will need a 94-95 3.06

There was a change in the rotor tooth count for the VSS pulse in 1996....

Both the 1994 and 1995 Transmissions have the same 1897 stall converter if it has the 3.06 ratio.. The differences between the L27 Trans and L36 Trans will be in programming...

What kind of mileage is on the Donor trans?


And I hate to say it, but I have seen many GM 4T60-E'* and 4T65-E'* make it to 200K... I am at 169k here and the Trans is still kicking along.... Its getting weak and quirky, but its still going, and I have been extremely abusive

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Old 03-24-2008, 04:21 PM   #5
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If the only issue is the number of reluctor teeth, keep the original differential and install it in a 96 trans.

I'm not familiar enough with the non-HD compatibilites to know if that'* the only difference.
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Old 03-24-2008, 04:23 PM   #6
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I believe they changed the pitch on the gears in the 1996 Trans... I think they are cut opposite of the 1995 Trans...

The tooth count on the 1995 is 31 and the tooth count on the 1996 is 30..

If he could swap out the reluctor on the newer trans I'm pretty sure he could use the newer trans

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Old 03-24-2008, 04:29 PM   #7
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Well my bro is coming up from Texas tomorrow with a wrecker and he has a 94 PA that as long as it has the 3.06 ratio it should work? I wasnt sure if a different body style makes a difference. However there is also a local 94 Bonne SE on his Texas C-list that has 80k and is for parts. That one then would be worth it for the whole drivetrain. The guy wants $900 for the whole car.
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Old 03-24-2008, 04:32 PM   #8
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as long as the Trans in the PA is a 3.06 Ratio( FW2 RPO ) then that trans will work for you..

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Old 03-24-2008, 04:54 PM   #9
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Awesome thank you all for the help.
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Old 03-24-2008, 05:40 PM   #10
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Well I have some awesome news. My brother just called and told me the Park Ave has a GM Goodwrench rebuilt trans that was just put in it 3 months ago! I am very happy to hear that. He is bringing the whole car and it has about 115k on the clock. Finally a break with all the stuff going wrong. Thanks again for the help.
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