why no parts around for 6spd manual??

[dalrx]

I got an 09 128 with 6 so man with 63000km or 40000miles . first gear kept popping out...got a trans shop to look at it had to drop tranny and open. The units are completely sealed from factory and dealers can access any internal parts for repair only new whole units. Even phoning around major parts places don'tseem to have any. Long story short only fix was to get a rebuilt unit install $4500. If parts were more readily avail perhaps this would have been less costly. Diagnose was broken first gear fork and some gear wear in first . all other gears good.

[TheSt|G]

I suppose generally it is because no one breaks them, but it certainly would be better to have it be user serviceable.

[Lester]

probable cause: forced downshifting into first when coming to a stop.

[Xyloft]

correct me if I'm wrong, but isn't it a GM trans?

[631twentyeighteye]

The automatic is the GM trans, not the manual.

[Fume]

Originally Posted by Xyloft

correct me if I'm wrong, but isn't it a GM trans?

I thought it was the automatic cars that had GM transmissions, not the 6MT.

[Dackelone]

Its because BMW does not think its dealer techs can rebuild a transmission correctly! No Joke!! So you get a factory rebuilt transmission instead. Same thing with the engines(long blocks) that need replacing. You get a rebuilt unit unless none are available and then you get a new unit.

Most manufactures would rather pay for a new(rebuilt) trans or engine ONCE then pay the same tech time and time again to repair it and try to learn what he or she did wrong.

Originally Posted by Fume

I thought it was the automatic cars that had GM transmissions, not the 6MT.

128i's get the GM automatic(5AT ?). All the 135i's get a ZF 6AT.


Dack

[Xyloft]

hmm. now i can't find the article. i could have sworn i read the 128 6spd manual was shared with a few 3 series and the CTS (although on different years).

wont be the first time I was wrong on the interwebs.

so what's the model code for the 128 6 spd trans?

[Taskmaster]

car-part.com

[Dackelone]

Originally Posted by Xyloft

so what's the model code for the 128 6 spd trans?

GS6-17BG made by Getrag.

http://realoem.com/bmw/showparts.do?...96&hg=23&fg=05

ZF makes the (6MT)manual and (6AT)automatic transmissions for the 135i and other BMW models.

[dalrx]

Weird thing about situation is dealer shop says they never open the transmissions. So if a trans shop opens the orig trans and discovers the issue inside....what is stopping you from putting back together and back in car? I mean it was driveable just with the annoying slipping of first . would their be a major potential for the whole unit just to fail out of blue sometime even if I drive it gingerly?