OH, I didn't read this part.

UMMM, some bad news. You're tranny is DONE. Its smoked. I had the same codes come up "excessive slip" and it eventually went kaput. I drove it in trans fail safe mode for a while trying to figure what to do. It eventually burned out the remaining clutches and I had to find another HP22 tranny. Which btw is a SORRY GM tranny. I hope to never have to do that again. You should start to call junkyards for this tranny from a wrecked car. I got mine $900 delivered. Make sure you change out the filter and oil too with ESSO or whatever they recommend now. Its probably the only course you have besides getting a brand new tranny or a rebuilt. Which BTW were running 2.5k-3k 3 yrs ago when I had this done on my 740i.

Be glad you went with the BOSCH. I had to change my alternator 2x in 3 months b/c the rebuilt FAILED. WTF! I was pissed. I was stranded 2x!

I went and bought a brand new BOSCH OEM for $500 and had the company that sold me the rebuilt one compensate me for the labor and the cost I paid for their rebuilt due to it failing so quickly. Oh, all these bad things happened to my 740i. Hope the 4.8is is more reliable than my 7.

Thanks for your experience. Not sure if your 740i shared a similar trany as the 4.6is or your mileage at the time. I'm weighing several options at this point but having it monitored by the indy for the correct diagnosis and it seems we may replace the torque converter.

Bullshit!!! I can say that (at least my) dealer does not shred any diagnostic paperwork, it gets stapled to the repair order and put in the file for that vin number. In fact, the diagnostic paperwork is what we fall back on if need be. Sounds like the service advisor is covering for the diagnostic report not making it to the repair order to file... otherwise they could have told you that to begin with.

And from the sound of it from the fault codes, the clutch material is worn and suspended in the fluid and the fluid viscosity is breaking down... Causing the pressure fault and slippage fault. Unfortunately the odds are that you will need the transmission rebuilt or replaced soon. :(

I'm just out of vocabulary regarding my service experience @ the stealer (pardon the pun).

So you don't believe replacing the torque converter will remedy?

In my experience more times than not the torque convertor lockup clutch excessive slipping fault has lead to trans replacement, usually from slipping clutchpacks and seal bypassing leading to lower hydrolic pressure, etc. I believe swissfrank's trans rebuild thread showed pics of the usual culprits and gave some viable info.

I was afraid so...Forgot about that thread by member swissfrank. I even considered a chilliwilli sponsored swissfrank all expense paid trip to NYC to drill down and repair the root cause of the issue, as one of my options. An indy would even allow me access to their garage and tools. Unfortunately it may be time to part ways with my beloved 4.6is. She seemed perfectly capable of holding-out with me till the second year of the X5 ///M. I'm now heavily leaning towards a trade-in for a 2006 4.8is with very low mileage at a nearby dealer.

I may put up several mods for sale, including OEM hitch, or i may swap onto the 4.8is. I'll keep posted those of you interested.