GM Part number for A41

[RADustin]

Go see an Allison dealer and get it done. no?

[oxman504]

Got it done already. Got an T1A4 TCM from GM for $260 and had Mike at Doug's Auto in Wisconsin flash it and the BCM for us. Allison DOC can't flash a GM cal. It's for medium duty only.

[schwoch1]

Got it done already. Got an T1A4 TCM from GM for $260 and had Mike at Doug's Auto in Wisconsin flash it and the BCM for us. Allison DOC can't flash a GM cal. It's for medium duty only.

Glad to hear it all worked out. It actually was quite simple

Mike