Guys: My 2000 528iA sport premium is in need of a definitive diagnosis. Two indie tranny shops I have visited are in conflict, one saying the GM unit needs to be replaced, the other saying it's an ECM replacement situation.
Symptom: The 5th gear (O/D) kicks out from time to time at HW (50 mph or above) speeds. The limp mode has been kicking in; fault code reads as gear ratio error.
I need a BMW technician for advice; bought he car CPO at Fairfax; between Fairfax, Sterling, and Arlington, which service department would be my best bet for an accuare diagnosis?
Thanks in advance
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