【Compatibility】Designed for 2004.5-2005 Chevy Silverado and GMC Sierra 2500HD / 3500HD with 6.6L Duramax LLY diesel engines. Please verify your vehicle year, engine code, and existing DSP5/SOTF setup before purchase
【5-Position Selector Switch】This DSP5 SOTF switch provides a 5-position rotary selector for compatible tuning setups, allowing easy switching between preset levels without replacing the switch or rewiring the system
【2-Wire 2-Pin Design】Built with a 2-wire 2-pin configuration for 2004.5-2005 LLY Duramax applications. Commonly installed to ECM gray connector J3, Pin 32 and Pin 50. Please follow the included instructions for correct wiring
【Durable Construction】Features a solid rotary knob, stable wiring, and protective split loom tubing to help resist heat, wear, and vibration in the engine bay for long-term use
【Package & Installation】Includes 1 x SOTF DSP5 switch, 1 x split loom tubing, and 1 x control knob. Professional installation is highly recommended, especially if you are not familiar with ECM connector pin locations