DFM Disabler for 2022-2026 GMC Sierra & Chevrolet Silverado 3-in-1 Function

Features

• Always V8 Mode: OBD2 Plug‑in Disable Auto Start/Stop, 0‑Cylinder & DFM for 5.3L/6.2L 10‑Speed 2021+ SUVs & 2022.5+ Refreshed Trucks
• 3-in-1 Module: Disable 0-Cylinder Mode, DFM & Auto Start-Stop
• Ultra-Slim Design—Safe & Discreet Installation: Only 0.87 in (22 mm) Thin Profile, Clean Layout, Preserves Legroom.
  
• Plug & Play OBD Installation—Fully Reversible: Easy OBD installation with no ECU/ECM programming , non-invasive and fully reversible.
  
• Disable 0-Cylinder Mode: Helps maintain engine braking during towing, long downhill drives, and other demanding conditions.
  
• Battery Protection Design: Auto Power-Off ~10 Mins After Shutdown
  
• Help Protect Critical Engine Components：Reduces Frequent Deactivation Cycles | Protects DFM Lifters & Camshafts.

Fitment

• 2022-2026 GMC Sierra 1500 Refreshed(5.3L L84 and 6.2L L87)
  
• 2021-2024 GMC Yukon(5.3L L84 and 6.2L L87)
• 2021-2024 GMC Yukon XL(5.3L L84 and 6.2L L87)
• 2022-2026 Chevrolet Silverado 1500 Refreshed(5.3L L84 and 6.2L L87)
• 2021-2024 Chevrolet Tahoe(5.3L L84 and 6.2L L87)
• 2021-2024 Chevrolet Suburban(5.3L L84 and 6.2L L87)
• 2021-2024 Cadillac Escalade(6.2L L87 only—excludes Escalade-V)
• 2021-2024 Cadillac Escalade ESV(6.2L L87 only—excludes Escalade-V)

In the Package

• 1X DFM Disabler

How to Confirm DFM Is Disabled

DFM status is not shown on the vehicle display. After installation, you can verify operation by:

• Smoother Engine Sound & Feel

Reduced vibration, rough transitions, and hesitation caused by cylinder deactivation.

• More Consistent Driving Performance

During steady cruising above 40 mph, the vehicle should maintain a smoother and more consistent V8 driving feel.

• Check Instant Fuel Economy

All NSAUTOLIGHTING products come with a 1 Year Worry-Free Warranty.
If you experience any defect with a product, email us at claire@ming-rui.onaliyun.com and we will do some quick troubleshooting.