Hi,
I assume the issue is the terminology. To reprogram a TCM it normally means they need to perform a software update. If this is the case that is not true. A software update does not require any tire size inputs. What was the reason you were having them program it?
However, if they are trying to run a procedure, it may fail due to speed sensors not being close enough.
Did they give you a repair order or something that documents what they did and why they can't do it? If not, ask them for one and I will be able to tell you what the issue is. Then just post a picture of it or scan it and post it to the site. Just block out your address and phone number if it is on there. Thanks
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Wednesday, October 30th, 2019 AT 5:24 PM