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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 01-26-2009, 12:09 PM   #1
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OK when i bought my bonneville I knew the trans was bad.I really didnt get into it because i did the upper and lower intake gaskets and now I was getting to the play with the trans.In my case you put the car in gear and dose not move.The speedometer gos up in mph and you can feel it shift a little to the next gear.I have to shut off the car to put it in park otherwise it will grind.You put it in park and the car will still roll and no hold the car in park.Could this be a broken diff in the trans?I had trans shops tell me to check for broken axles?Would it be hard or maybe easy to fix?Any help would be great.ty gene
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Old 01-26-2009, 12:14 PM   #2
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Could be a bad diff. Can you tell where the grinding is coming from? Changing a diff is not a overly hard job. But will take a while. Billboost has done this. He'* the one to ask about this.
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Old 01-26-2009, 12:41 PM   #3
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The grinding noise is from putting it in park while the trans is still spinning.Thats why i have to shut the enginge off to put it in park.
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Old 01-26-2009, 01:01 PM   #4
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I think your car has a 4T60-E transmission. Here'* your diff
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It sounds like there'* something wrong with the diff. If I had to take a guess I would say your parking pin is broken, and something got in to the diff and damaged that. There are other members that know more about transmissions then I do, so I'm sure they will chime in.

What you can do is jack up both front wheels and place jack stands under the car. They spin the tires by hand. Let us know what happens? What you feel, see, and hear.
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Old 01-26-2009, 01:56 PM   #5
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thanks I maybe working on it tonite.dosen't hurt to open that side and see whats wrong.
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Old 01-26-2009, 02:38 PM   #6
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It'* going to be a bit of effort, but not to hard. Get some pans to catch the fluid that will leak out. If anything looks odd, take a picture and post it here right away.
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Old 01-26-2009, 11:23 PM   #7
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ok,I took the passenger side axle out and found the axle broken.I had my dad spin the driver wheel and saw the piece in the trans spinning also.So,It looks like I just need a new axle,HOPEFULLY.I drilled a hole into the part that still in the trans and my father is going to tap it and try to pop it out with a harden bolt because of the clip thats on the end of the axle.I wonder what the kid was doing with this thing before I bought it.Probably nuetral slamming it.
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Old 01-26-2009, 11:29 PM   #8
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Hopefully that is the extent of the damage. I would not mind seeing a picture of it
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Old 01-26-2009, 11:38 PM   #9
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I'll will get some soon.I forgot the darn camera tonight.
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Old 01-29-2009, 11:00 AM   #10
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Here are some pics of the broken axle shaft.It was pretty simple to get the other pice out.What I did was drilled and tapped the center and then inserted a bolt,then used a pry bar and popped it out.


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