The Edge Evolution CTS3 unlock and flash package tunes 2020-2023 GM 2500 and 3500 HD trucks with the 6.6L L8T gas engine. It flashes preloaded performance calibrations and acts as a color touchscreen monitor for live engine data. The ECM must be unlocked before flashing, the device tunes a single vehicle, and once the ECM is unlocked the unlock process cannot be reversed.
Specifications:
- Product line: Edge Evolution CTS3
- Type: unlock and flash in-cabin tuner and monitor
- For the 6.6L L8T gas engine (unlock required)
- Color touchscreen display with Wi-Fi updates
- Expandable Accessory System (EAS) compatible
- Fuel type: gasoline
- 50 State Legal: No
- CARB (California) Compliant: No
- Part number: 85453-K
Fitment: 2020-2023 GM 2500 and 3500 HD trucks (Chevrolet Silverado HD and GMC Sierra HD) with the 6.6L L8T gas engine.
Emissions compliance: This part is legal for on-street use under the EPA Tampering Policy of November 23, 2020 in states that follow that policy. It is not currently legal for sale or use in California, where CARB testing is pending. A California Proposition 65 warning applies.
FAQ
What does the 85453-K fit?
It fits 2020-2023 GM 2500 and 3500 HD trucks with the 6.6L L8T gas engine.
Does the ECM have to be unlocked first?
Yes. The factory-locked ECM must be unlocked before the Evolution CTS3 can flash a performance tune.
Is the unlock reversible?
No. The tune can be reset to factory, but the unlock step cannot be reversed, and a VIN-locked or unlocked device is non-returnable.
Is the 85453-K legal for street use?
It is legal for on-street use in states that follow the EPA Tampering Policy of November 2020, but it is not legal for sale or use in California while CARB testing is pending.
