Identification
The GM 6L45 is an automatic transmission designation; BMW applications use the designation GA6L45R. The transmission and its electronic control unit are related components, so a gearbox designation alone does not establish a particular controller, software or part number.
Catalogue records
Programming-tool documentation identifies Bosch controllers on certain GM 6L transmissions. The two catalogue records retain their separate imported identities and should not be assumed interchangeable without matching the actual unit.