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DiabloSport Predator 2 with ECM Unlock Kit 7266-R fits 2020-2023 Chevrolet / GMC

⚠️ Please verify fitment before purchasing. Check the fitment chart below or use the Year/Make/Model tool to confirm this part fits your vehicle.

⚠️ Verify fitment before purchasing. Check the fitment chart below or click the 3 lines in the top left menu, select Home, then use the Year/Make/Model guide.

DiabloSport
7266-R
Out of stock
$915.95 USD $813.99 USD
DiabloSport Predator 2 with ECM Unlock Kit 7266-R fits 2020-2023 Chevrolet / GMC
Description
For GM truck owners ready to transform performance, drivability, and towing strength, the Predator 2 7266-R Kit delivers the proven power gains and flexibility you’ve been waiting for.


This Part Fits:

Year Make Model Submodel Notes
2020 Chevrolet Silverado 2500 HD Custom
2021 Chevrolet Silverado 2500 HD Custom
2022 Chevrolet Silverado 2500 HD Custom
2023 Chevrolet Silverado 2500 HD Custom
2020 Chevrolet Silverado 2500 HD High Country
2021 Chevrolet Silverado 2500 HD High Country
2022 Chevrolet Silverado 2500 HD High Country
2023 Chevrolet Silverado 2500 HD High Country
2020 Chevrolet Silverado 2500 HD LT
2021 Chevrolet Silverado 2500 HD LT
2022 Chevrolet Silverado 2500 HD LT
2023 Chevrolet Silverado 2500 HD LT
2020 Chevrolet Silverado 2500 HD LTZ
2021 Chevrolet Silverado 2500 HD LTZ
2022 Chevrolet Silverado 2500 HD LTZ
2023 Chevrolet Silverado 2500 HD LTZ
2020 Chevrolet Silverado 2500 HD WT
2021 Chevrolet Silverado 2500 HD WT
2022 Chevrolet Silverado 2500 HD WT
2023 Chevrolet Silverado 2500 HD WT
2020 Chevrolet Silverado 3500 HD Base
2021 Chevrolet Silverado 3500 HD Base
2022 Chevrolet Silverado 3500 HD Base
2023 Chevrolet Silverado 3500 HD Base
2020 Chevrolet Silverado 3500 HD High Country
2021 Chevrolet Silverado 3500 HD High Country
2022 Chevrolet Silverado 3500 HD High Country
2023 Chevrolet Silverado 3500 HD High Country
2020 Chevrolet Silverado 3500 HD LT
2021 Chevrolet Silverado 3500 HD LT
2022 Chevrolet Silverado 3500 HD LT
2023 Chevrolet Silverado 3500 HD LT
2020 Chevrolet Silverado 3500 HD LTZ
2021 Chevrolet Silverado 3500 HD LTZ
2022 Chevrolet Silverado 3500 HD LTZ
2023 Chevrolet Silverado 3500 HD LTZ
2020 Chevrolet Silverado 3500 HD WT
2021 Chevrolet Silverado 3500 HD WT
2022 Chevrolet Silverado 3500 HD WT
2023 Chevrolet Silverado 3500 HD WT
2020 GMC Sierra 2500 HD AT4
2021 GMC Sierra 2500 HD AT4
2022 GMC Sierra 2500 HD AT4
2023 GMC Sierra 2500 HD AT4
2020 GMC Sierra 2500 HD Base
2021 GMC Sierra 2500 HD Base
2020 GMC Sierra 2500 HD Denali
2021 GMC Sierra 2500 HD Denali
2022 GMC Sierra 2500 HD Denali
2023 GMC Sierra 2500 HD Denali
2022 GMC Sierra 2500 HD Pro
2023 GMC Sierra 2500 HD Pro
2020 GMC Sierra 2500 HD SLE
2021 GMC Sierra 2500 HD SLE
2022 GMC Sierra 2500 HD SLE
2023 GMC Sierra 2500 HD SLE
2020 GMC Sierra 2500 HD SLT
2021 GMC Sierra 2500 HD SLT
2022 GMC Sierra 2500 HD SLT
2023 GMC Sierra 2500 HD SLT
2020 GMC Sierra 3500 HD AT4
2021 GMC Sierra 3500 HD AT4
2022 GMC Sierra 3500 HD AT4
2023 GMC Sierra 3500 HD AT4
2020 GMC Sierra 3500 HD Base
2021 GMC Sierra 3500 HD Base
2020 GMC Sierra 3500 HD Denali
2021 GMC Sierra 3500 HD Denali
2022 GMC Sierra 3500 HD Denali
2023 GMC Sierra 3500 HD Denali
2022 GMC Sierra 3500 HD Pro
2023 GMC Sierra 3500 HD Pro
2020 GMC Sierra 3500 HD SLE
2021 GMC Sierra 3500 HD SLE
2022 GMC Sierra 3500 HD SLE
2023 GMC Sierra 3500 HD SLE
2020 GMC Sierra 3500 HD SLT
2021 GMC Sierra 3500 HD SLT
2022 GMC Sierra 3500 HD SLT
2023 GMC Sierra 3500 HD SLT


Specifications:

5 Volt Data Logging Inputs No
50 State Legal No
AC Adapter No
Accepts Custom Tunes From CMR Yes
621 ABS
Brand DiabloSport
California Proposition 65 Required Yes
CARB (California) Compliant No
2278 No
Category Vehicles, Equipment, Tools, and Supplies
Color Display Yes
Custom Tuning Yes
Data Logging Yes
Emission Code 7
2541 Yes
Fuel Type Gasoline
3390 Performance
2543 Yes
part type Computer Chip Programmer
Performance Tunes Yes
2547 Yes
Product Type Handheld Tuner
2487 Yes
Speedometer Yes
Sub Category Engine Service
2544 Transmission
2544 Engine
5561 Yes
Warning California Proposition 65
Wi-Fi Updates No
5 Volt Data Logging Inputs No
50 State Legal No
AC Adapter No
Accepts Custom Tunes From CMR Yes
621 ABS
Brand DiabloSport
California Proposition 65 Required Yes
CARB (California) Compliant No
2278 No
Category Vehicles, Equipment, Tools, and Supplies
Color Display Yes
Custom Tuning Yes
Data Logging Yes
Emission Code 7
2541 Yes
Fuel Type Gasoline
3390 Performance
2543 Yes
part type Computer Chip Programmer
Performance Tunes Yes
2547 Yes
Product Type Handheld Tuner
2487 Yes
Speedometer Yes
Sub Category Engine Service
2544 Transmission
2544 Engine
5561 Yes
Warning California Proposition 65
Wi-Fi Updates No
Description_SHO 20-23 6.6 L8T P2
Description_INV 2020-2023 GM 2500/3500 6.6 Gas Predator
Description_ASC ECM Must be unlocked prior to using the Predator 2 to tune the vehicle. Once unlocked, the locksmith/harness is no longer needed.
Description_DES Predator 2 for 20-23 6.6L Gas
Description_EXT DiabloSport Predator 2 with ECM Unlock kit for 2020-2023 GM 6.6L L8T
Description_MKT The DiabloSport Predator 2 7266-R Kit is the complete tuning solution for 2020–2023 GM trucks equipped with the 6.6L L8T gas engine. From the factory, these trucks are locked down, but DiabloSport provides everything you need to safely unlock and unleash their true performance.
Description_MKT This kit includes the Predator 2 handheld programmer, DiabloSport’s exclusive Locksmith device, and ECM harnesses—eliminating the need to remove your ECM. Once unlocked, the Predator 2 gives you access to dyno-tested performance tunes that deliver up to 28 rear-wheel horsepower and 50 rear-wheel torque gains over stock. The result is stronger acceleration, more pulling power, and a truck that feels more responsive in every situation.
Description_MKT Preloaded calibrations cover 87, 91, and 93 octane fuels, along with dedicated tunes for the 6-speed automatic transmission. Beyond the included tunes, you can fine-tune parameters like throttle response, tire size calibration, and speed limiter adjustments for a more personalized driving experience.
Description_MKT For GM truck owners ready to transform performance, drivability, and towing strength, the Predator 2 7266-R Kit delivers the proven power gains and flexibility you’ve been waiting for.
Description_FAB 28 RWHP/50 RWTQ over stock on 93 octane fuel
Description_FAB 20-23 GM 2500/3500 6.6 L8T
Description_FAB Correct Speedometer for Tire Size
Description_FAB Set final drive ratio
Description_FAB Adjust Rev Limiter
Description_FAB Set Idle RPM in Drive/Neutral
Description_FAB Remove Speed Limiter
Description_FAB Adjust Throttle Sensitivity
Description_FAB Recall Last Mode Setting
Description_FAB Front/Rear TPMS Threshold Adjustment
Description_FAB Transmission Adaptive Relearn
Description_FAB Crank Position Sensor Relearn
Description_FAB Control Intake Filter Monitor system
Description_SHO 20-23 6.6 L8T P2
Description_INV 2020-2023 GM 2500/3500 6.6 Gas Predator
Description_ASC ECM Must be unlocked prior to using the Predator 2 to tune the vehicle. Once unlocked, the locksmith/harness is no longer needed.
Description_DES Predator 2 for 20-23 6.6L Gas
Description_EXT DiabloSport Predator 2 with ECM Unlock kit for 2020-2023 GM 6.6L L8T
Description_MKT The DiabloSport Predator 2 7266-R Kit is the complete tuning solution for 2020–2023 GM trucks equipped with the 6.6L L8T gas engine. From the factory, these trucks are locked down, but DiabloSport provides everything you need to safely unlock and unleash their true performance.
Description_MKT This kit includes the Predator 2 handheld programmer, DiabloSport’s exclusive Locksmith device, and ECM harnesses—eliminating the need to remove your ECM. Once unlocked, the Predator 2 gives you access to dyno-tested performance tunes that deliver up to 28 rear-wheel horsepower and 50 rear-wheel torque gains over stock. The result is stronger acceleration, more pulling power, and a truck that feels more responsive in every situation.
Description_MKT Preloaded calibrations cover 87, 91, and 93 octane fuels, along with dedicated tunes for the 6-speed automatic transmission. Beyond the included tunes, you can fine-tune parameters like throttle response, tire size calibration, and speed limiter adjustments for a more personalized driving experience.
Description_MKT For GM truck owners ready to transform performance, drivability, and towing strength, the Predator 2 7266-R Kit delivers the proven power gains and flexibility you’ve been waiting for.
Description_FAB 28 RWHP/50 RWTQ over stock on 93 octane fuel
Description_FAB 20-23 GM 2500/3500 6.6 L8T
Description_FAB Correct Speedometer for Tire Size
Description_FAB Set final drive ratio
Description_FAB Adjust Rev Limiter
Description_FAB Set Idle RPM in Drive/Neutral
Description_FAB Remove Speed Limiter
Description_FAB Adjust Throttle Sensitivity
Description_FAB Recall Last Mode Setting
Description_FAB Front/Rear TPMS Threshold Adjustment
Description_FAB Transmission Adaptive Relearn
Description_FAB Crank Position Sensor Relearn
Description_FAB Control Intake Filter Monitor system
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