TCM TUNING 4 Credits AND UNLOCK/ CHEVROLET/GMC DURAMAX 6.6L 2017-2023

All of our tunes are made in-house by top-tier engineers—no outsourcing, no third-party files. These are guys who’ve worked with the big names: Cummins, Power Stroke, and Duramax. They know these systems inside and out, and they build every tune to be clean, reliable, and tailored to your setup.

Fits 2017, 2018, 2019, 2020, 2021, 2022, and 2023 Chevrolet Silverado and GMC Sierra 2500HD & 3500HD models equipped with the 6.6L Duramax diesel engine. Compatible with all cab styles including Regular Cab, Double Cab, and Crew Cab — excluding Cab & Chassis configurations.

1- Receive your unlocked TCM
Once your unlocked T87/T93 TCM arrives, you’re ready to begin the setup process.

2- Scan your factory TCM
Use the VCM Scanner to scan your factory TCM. This step allows you to safely unhook it.

3- Replace the TCM
Remove your factory TCM and install the unlocked one in its place.

4- Verify the connection
Open the VCM Scanner again to confirm that the unlocked TCM is properly connected.

5- Read the unlocked TCM file
Use your HP Tuner to read (save) the unlocked TCM file.

6- Send us the file
Upload the file through the JotForm link we provide.

7- We create your custom TCM tune
Our team will build your custom TCM file based on your setup.

8- We send your tuned file back
You’ll receive your tuned TCM file by email once it’s ready.

9- Flash the new file
Use your HP Tuner to flash the new TCM file — the same way you would with an ECM tune.

Don't panic! We will send you detailed instructions. Plus, if you have any questions or get stuck during the installation, we've got you covered. Don't forget you have unlimited access to our professional tuning technicians.

After your purchase, you will receive a form that you have to fill out with the necessary info of your truck, like VIN, make, and year. This way, we can custom you TCM Tuning File.

We process and ship all orders within 1-2 business days to all U.S. states. Once shipped, delivery typically takes 5-8 business days, depending on your location.

You will receive a confirmation email with a tracking number once your order has been dispatched. Please note that delivery times may vary slightly due to carrier schedules or external factors beyond our control.