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Tranny won't go!

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Old Oct 13, 2008 | 11:25 AM
  #1  
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Default Tranny won't go!

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I have had a problem with my transmission (99 MM6) that does not sound like anything posted here. I have had no problems at all, smooth shifter, stayed in gear etc. Then about two days ago, my wife is shifting from 1st to 2nd under normal acceleration and she says the trans went to 2nd gear, she released the clutch and then the trans jumped out of gear. She also said that she felt the clutch jump. Now the car will shift into any gear but won't move. I can hear the standard neutral "pebbles" sound of the torque tube/trans when cycling the clutch. It is at the Chevy dealer (because I have no other choice where I live).

Any ideas/similar experience? The dealer hasn't found any obvious problems and says it will take at least 3 hours of diagnostics. If I can get them pointed in the right direction it will make my life easier.

Thanks for any help.

Dave
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Old Oct 13, 2008 | 11:31 AM
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I just had that problem with mine. They are diagnosing it as well and my tuner said I may have broke the input shaft. Let me know what they find out.
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Old Oct 13, 2008 | 01:00 PM
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i would question the wifes honesty if it turns out to be a broken output shaft or rear differential. lol
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Old Oct 13, 2008 | 01:11 PM
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Sound like one of the output shafts went but I dont know since it was shifted eaisly
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Old Oct 13, 2008 | 02:39 PM
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She does love it when it goes fast...the car that is.
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Old Oct 14, 2008 | 06:09 PM
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Verdict is in...my transmission cracked the case between the trans and the differential causing the outpub shaft to snap. This one is going to hurt. A lot of options all that cost tons of money, I am leaning towards an RPM transmission and differential because of the good press on this forum and they are as cheap as I can find over stock. Any opinions?
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