Sold the 2018 Sierra SLT. Range Device Blue LED.

  • Brand New Range Technology AFM/DFM Disabler, Blue, Compatible with V6 & V8 GM Motors, Produced by Holley Performance Products (Part #RA003B)
  • The Range AFM/DFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active or Dynamic Fuel Management system from dropping cylinders. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns.

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This will fit in a $9.95 USPS if it fits it ships box.