I was looking at the 1LE driveshaft (p/n 10085375) to replace my stock steel one because the vibrations at 65-75 are driving me insane. The description for that part number on paceparts.com and gmpartsdirect.com say they're for the MM6 transmission. Will this fit correctly in the 4L60E? Would I also need a new U-joint for the aluminum driveshaft?
I have an ES poly tranny & tq arm mount but some people say that the aluminum driveshaft alone will not get rid of these vibrations (because the mount sucks - according to them). However, these vibrations only occur at a certain speed so I'm thinking it's likely the driveshaft.
Thanks for anyone's advise.
I have an ES poly tranny & tq arm mount but some people say that the aluminum driveshaft alone will not get rid of these vibrations (because the mount sucks - according to them). However, these vibrations only occur at a certain speed so I'm thinking it's likely the driveshaft.
Thanks for anyone's advise.



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I had mine replaced under warranty, but can't find any of the warranty work papers. I've got every shred of documents for all the work I've done and that includes the TSB for the driveshaft. All I've seen is the one part number, so it must be the same.
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