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Guaranteed Fitment
Always the correct part
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In-House Experts
We know our products
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Technical Support
We help with any installation questions
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Wordwide Delivery
Fast shipping times from USA warehouses
Unlock and tune your 2020-2023 GM L8T powered truck at home with our 2866-R Flashpaq kit! We provide our industry exclusive Locksmith device and ECM harness with our popular Flashpaq handheld device to give you the ability to tune without removing the ECM. Once unlocked, the provided tunes can add solid power to your 6.6L gas truck, while also improving throttle response, shifting, and more. Tunes for 87 octane, and premium fuel are provided, as well as tunes for the 6 speed transmissions. We even provide adjustments like throttle boost, speed limiter and tire size to name a few!
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 | No |
| 621 | ABS |
| Brand | Superchips |
| California Proposition 65 Required | Yes |
| CARB (California) Compliant | No |
| 2278 | No |
| Category | Vehicles, Equipment, Tools, and Supplies |
| Color Display | Yes |
| Custom Tuning | No |
| 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 |
| 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 | No |
| 621 | ABS |
| Brand | Superchips |
| California Proposition 65 Required | Yes |
| CARB (California) Compliant | No |
| 2278 | No |
| Category | Vehicles, Equipment, Tools, and Supplies |
| Color Display | Yes |
| Custom Tuning | No |
| 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 |
| 5561 | Yes |
| Warning | California Proposition 65 |
| Wi-Fi Updates | No |
| Description_SHO | 20-23 L8T Flashpaq |
| Description_INV | 2020-2023 GM 2500/3500 6.6 Gas Flashpaq |
| Description_ASC | ECM Must be unlocked prior to using the Flashpaq to tune the vehicle. Once unlocked, the locksmith/harness is no longer needed. |
| Description_DES | Flashpaq for 2020-2023 6.6L L8T Gas trucks with Unlock |
| Description_EXT | Superchips Flashpaq with ECM Unlock for 2020-2023 GM 6.6L L8T |
| Description_MKT | Unlock and tune your 2020-2023 GM L8T powered truck at home with our 2866-R Flashpaq kit! We provide our industry exclusive Locksmith device and ECM harness with our popular Flashpaq handheld device to give you the ability to tune without removing the ECM. Once unlocked, the provided tunes can add solid power to your 6.6L gas truck, while also improving throttle response, shifting, and more. Tunes for 87 octane, and premium fuel are provided, as well as tunes for the 6 speed transmissions. We even provide adjustments like throttle boost, speed limiter and tire size to name a few! |
| Description_FAB | Supports 2020-2023 Silverado/Sierra 2500/3500 6.6 L8T |
| Description_FAB | Up to 28 RWHP/50 RWTQ over stock on premium fuel |
| Description_FAB | Performance TCM tune for optimized transmission behavior |
| 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_FAB | Monitor real-time data |
| Description_FAB | Read and clear DTCs |
| Description_SHO | 20-23 L8T Flashpaq |
| Description_INV | 2020-2023 GM 2500/3500 6.6 Gas Flashpaq |
| Description_ASC | ECM Must be unlocked prior to using the Flashpaq to tune the vehicle. Once unlocked, the locksmith/harness is no longer needed. |
| Description_DES | Flashpaq for 2020-2023 6.6L L8T Gas trucks with Unlock |
| Description_EXT | Superchips Flashpaq with ECM Unlock for 2020-2023 GM 6.6L L8T |
| Description_MKT | Unlock and tune your 2020-2023 GM L8T powered truck at home with our 2866-R Flashpaq kit! We provide our industry exclusive Locksmith device and ECM harness with our popular Flashpaq handheld device to give you the ability to tune without removing the ECM. Once unlocked, the provided tunes can add solid power to your 6.6L gas truck, while also improving throttle response, shifting, and more. Tunes for 87 octane, and premium fuel are provided, as well as tunes for the 6 speed transmissions. We even provide adjustments like throttle boost, speed limiter and tire size to name a few! |
| Description_FAB | Supports 2020-2023 Silverado/Sierra 2500/3500 6.6 L8T |
| Description_FAB | Up to 28 RWHP/50 RWTQ over stock on premium fuel |
| Description_FAB | Performance TCM tune for optimized transmission behavior |
| 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_FAB | Monitor real-time data |
| Description_FAB | Read and clear DTCs |
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