The GDP GDP410014 DSP5 Switch With High Idle for your 2004.5-2005 GM 6.6L Duramax LLY works in conjunction with the GDP EFILive Tuning. With the DSP5 switch, you can change your tuning "on-the-fly", and the High Idle function allows you to increase your idle with just the turn of a knob. Tuning not included, you must have DSP5 Tuning for use with this switch.
- 6-Position Switch
- For Use With DSP5 Tuning
- Works With Or Without Tuning For High Idle
- Adjust High-Idle Through Cruise Control Switch