The BD-Power 1036605 High Idle Switch for your 04.5-05 GM 6.6L Duramax LLY is an adjustable switch that will activate the high-idle mode on your truck. Perfect for use in cold weather or in applications where a PTO is needed, this switch taps into factory wiring and provides multiple idle speeds. Works with trucks that have an automatic transmission and cruise control only.

• Faster Engine Warm-Up
• Great For PTO Applications
• Idle From 1200 RPM To 1800 RPM