DiabloSport Sprint AFM DFM Disable Module with Auto Start Stop Override for GM V8 Trucks Cars and SUVs - S1000

The DiabloSport Sprint S1000 is a plug-in OBD-II module that keeps a GM V8 with Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) in full V8 mode and overrides auto start/stop. It does not flash the factory computer and does not add power; unplug it and the vehicle is back to stock.

It is the right part for a driver who does not want a tuner but is tired of the shudder and exhaust drone of four-cylinder mode, or who wants to reduce the lifter wear concerns tied to cylinder deactivation.

Vehicle compatibility

• 2007-2022 GM trucks and SUVs with an AFM or DFM V8 (Silverado, Sierra, Tahoe, Yukon, Suburban, Escalade and related)
• 2010-2024 Camaro V8
• 2014-2019 C7 Corvette
• Most other GM AFM-equipped V8 cars and crossovers; check the Make and Model tags on this page
• Not compatible with 2022.5 and newer refreshed trucks or the C8 Corvette

What it does

• Blocks AFM cylinder deactivation on 2007-2018 V8s
• Blocks DFM on 2019-2022 trucks so the engine runs on all eight cylinders
• Overrides auto start/stop on vehicles that have it
• Plugs into the OBD-II port; blue LEDs confirm it is active
• No flash, no tune and no trace once removed

Installation and limitations

Plug the Sprint into the OBD-II port under the dash and start the vehicle. That is the whole installation. Remove it any time to return to factory behavior. If you already run a DiabloSport or Edge tuner you do not need this module; the tuner can disable AFM or DFM itself. Not for use in California.

Specifications

• Part number: S1000
• Brand: DiabloSport
• Emissions: Not legal for sale or use in California
• Warranty: 1 year manufacturer warranty
• Country of origin: United States
• Packaged size: 4.2 x 4 x 1.2 in, 3.74 lb
• UPC: 758381974624

Frequently asked questions

Does the Sprint add horsepower?

No. It only prevents the engine from dropping into four-cylinder mode and overrides auto start/stop. For added power on a locked 2019-2022 GM 1500, see the Trinity 2 unlock kit 9225-R or Predator 2 kit 7226-R.

Will it work on my 2023 Silverado?

No. DiabloSport lists it as not compatible with the 2022.5 and newer refreshed trucks. Coverage ends with the 2022 pre-refresh models.

Does it leave a trace in the computer?

No. Nothing is flashed. Unplug it and the vehicle returns to stock operation.

Can I use it with a tuner?

You do not need to. DiabloSport and Edge tuners include AFM and DFM disable in their tunes.