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RE: ZF4hp22 and the GM THM r1 transmissions



>                 The  THM r1 is probably an OPEL transmission made in 
>GERMANY. (dont really know yet) BMW probably abandoned the ZF4hp22 
>because it has been problematic for a long time. (It certainly appears this 
>way  from the  service  bulletin 1985 - 1993 )

There's a short blurb in the 9/96 issue of 'Automobile' magazine in the
middle of the Cadillac Catera comparison article:

"Yet the Catera's V-6 pulled strongly to its 6000-rpm power peak, its
four-speed automatic transmission (the same one that Opel builds for many
BMWs) shifting swiftly yet smoothly"

John Estep
[email protected]