Transmission Control Module
Thread Starter
5th Gear
Joined: May 2020
Posts: 5
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Transmission Control Module
I picked up my new C8 1 week ago, on day 5 with less than 80 miles on it, my check engine light came on. I took it in this morning and the service technician said the TCM needed to be replaced. Has anyone else had this problem? I saw online that there was a technical bulletin telling dealers to update the software before delivery but evidently the software update won't take. It's running fine but I have to take it in for a two hour replacement when the part arrives.
