Chevrolet TCM / Transmission Control Module Services

Chevrolet and GM transmission control modules cover the standalone TCM units used on 6L80 / 6L90 / 8L90 / 10L80 / 10L90 transmissions, the Allison TCM on heavy-duty trucks, and the integrated PCM transmission control on older 4L60-E / 4L65-E / 4L80-E generations. This hub will list our Chevrolet TCM bench services as they launch.

Available Services

This hub is reserved for upcoming services. Contact us if you need this work — we can provide a quote based on your specific module and part number.

Not Sure Which Service to Choose?

If you are unsure which option matches your Chevrolet or GM module, the safest path is to email or text us photos before ordering: full label of the original module (the one you want serviced), full label of the donor module if you already have one, the part number, hardware revision, and software/calibration sticker, and a photo of the connector pinout if visible. We will confirm whether the service is supported for your specific part number and hardware revision before you order and ship.

Compatibility Warning

TCM service requires correct identification of the transmission model code (6L80, 8L90, 10L80, Allison 1000, etc.) and the TCM hardware revision. Different generations are not cross-compatible. Photos of the TCM label and your VIN before ordering save shipping costs.

What to Ship

  • Your original Chevrolet / GM module (the failed/locked unit), clearly marked “ORIGINAL”
  • If applicable: a donor module, clearly marked “DONOR” — same part number family and hardware revision as the original
  • Your order receipt printed, or order number written on a slip in the box
  • Your return shipping address
  • Ship to the address shown on your order receipt at checkout (we operate from 2 locations and route based on tool availability and turnaround)

Related Chevrolet Services

FAQ

Which Chevrolet / GM transmissions will this hub cover when launched? 6L80 / 6L90 (6-speed RWD, trucks and Camaro), 8L90 (8-speed, Corvette / Silverado / Cadillac), 10L80 / 10L90 (10-speed jointly with Ford), Allison 1000 / 2000 (HD trucks), and the older 4L60-E / 4L65-E / 4L80-E (integrated in PCM).

Why is this hub a placeholder? GM TCM bench programming requires specific tooling we are evaluating before publishing services at scale. Email us if you need this work — we may be able to help case-by-case.