AFM/DFM Disabler for GM V6 V8 Engines - Compatible with V6 & V8 Active or Dynamic Fuel Management Motors (Cars, Trucks, and SUVs); Not Compatible with 2019+ Silverado and Sierra with 5.3L/6.2L Engines; Not Suitable for 2022 Refresh Model Trucks or SUVs AFM/DFM Disabler allows your V6 or V8 GM vehicle to operate in full cylinder mode at all times, providing more consistent power delivery and reducing throttle lag; Does not modify the factory ECU program and leaves no traces when removed Plug and Play design for easy installation; Simply plug into the OBD port; Four lights will flash in sequence, then one light remains steady when connection is stable Constructed from high-quality materials for reliable performance under extreme temperatures and pressure; Features soft-glow LED indicator lights that are not distracting during nighttime driving Suitable for a wide range of vehicles Product labels may vary; Specific text or color cannot be selected; Actual product may differ slightly in appearance Color: Black Material: Plastic Package Includes: 1 x Disabler Note: Light reflection and display settings may cause slight color variations between image and actual item; Measurement tolerance is +/- 1-3 cm