Used PPE Xcelerator Economy Tuner. 

Compatible with 2001-2009 Duramax LBZ/LB7/LLY/LMM motors. 

This unit is as new and contains all items that came with it when purchased. 

My truck averaged nearly 24MPG on the #2 setting. 

Buyer pay $9.95 shipping

I only ship to continental US. 

If you have questions please ask.