Contact

Email is fastest: support@transmissiontunes.com. During tuning hours (8 am–6 pm Central, Mon–Sat) you'll hear back within the hour.

Have a platform we don't list, or a question about a built unit or a converter? Send the year, model, what's been done, and what you're after. We'll tell you straight whether we can take it.

Tell us where to reach you and we'll email when GM 9T50 / 9T65 opens for orders.