DiabloSport Predator 2 Tuner Kit with ECM and TCM Unlock for 2019-2022 Silverado and Sierra 1500 5.3L 6.2L - 7226-R

The DiabloSport 7226-R is a tuner kit for the 2019-2022 (pre-refresh) Chevrolet Silverado 1500 and GMC Sierra 1500 with the 5.3L or 6.2L V8. It includes the Predator 2 handheld programmer plus the locksmith device and harnesses that unlock both the ECM and the TCM in the driveway, without removing the modules.

DiabloSport's published gains: up to 17 rwhp and 24 lb-ft on the 6.2L and 10 rwhp and 33 lb-ft on the 5.3L, with about half a second off 0-60. For most owners the daily wins are DFM disable, adjustable throttle, and settings that make the truck remember auto stop/start and drive mode between key cycles.

Vehicle compatibility

• 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 with the 5.3L or 6.2L V8, including the 2022 LTD / Limited
• 6, 8 and 10 speed automatic transmissions
• Not for 2022.5 and newer refresh trucks
• Want a dash-mounted touchscreen instead of a handheld? See the Trinity 2 version 9225-R

Tuning and adjustment features

• ECM and TCM unlock hardware included; unlock and tune at home
• Preloaded tunes for multiple octanes with transmission calibrations
• Disable Dynamic Fuel Management for full-time V8 operation
• Throttle Boost setting for adjustable throttle feel
• Keep Auto Stop/Start Setting and Keep Drive Mode Setting hold your choices across key cycles
• Speedometer correction for 26-38 inch tires and 3.42-5.13 gears
• Speed limiter removal and rev limiter adjustment of plus or minus 400 rpm
• Data logging, read and clear trouble codes

What is in the box

• Predator 2 handheld programmer
• Locksmith unlock device
• ECM and TCM unlock harnesses
• OBD-II and USB cables
• Instructions

Installation and limitations

Unlocking is a one-time job: connect the locksmith to the ECM and TCM with the supplied harnesses, follow the steps, then tune through the OBD-II port with the Predator 2. Once unlocked, the locksmith and harnesses are no longer needed. Not for use in California.

Specifications

• Part number: 7226-R
• Brand: DiabloSport
• Emissions: Not legal for sale or use in California
• Warranty: 1 year manufacturer warranty
• Country of origin: United States
• Packaged size: 9.5 x 6.3 x 4 in, 2 lb
• UPC: 810065212856

Frequently asked questions

Do I have to remove the ECM to unlock it?

No. The harnesses connect to the modules in the truck. The unlock is done in the driveway.

How much power does it add?

DiabloSport publishes up to 17 rwhp and 24 lb-ft on the 6.2L and 10 rwhp and 33 lb-ft on the 5.3L. The transmission tune and DFM disable are what most owners notice.

Does it fit a 2023 Silverado?

No. This kit covers the 2019-2022 pre-refresh trucks. The 2022.5 and newer refresh trucks are not supported.

Will it disable DFM permanently?

While the tune is loaded, yes. The truck runs in V8 mode full time until you return it to stock.