what is a juice box?

Possibly in the wrong area. You may be referring to an EDGE Juice plug in unit. I think "juice box" is slang used for this product. Hope this helps. Also, WELOCOME TO OUR SITE!!!! Be sure to post in the introductions and fill out your signature in your user control panel. Others will be able to assist you better with more technical questions if they have the most information possible about your rig. Hope you enjoy your visit!

thank you and I'll fill in my signature

PLEASE SEE FORUM DISCRIPTION PRIOR TO STARTING A THREAD.

If your truck is newer than first year of the Duramax send me a PM and I will move this thread. A signature would help,please.

A Edge Juice box alters fuel injection pulse and timing.Thus adding HP and Torque to your engine. Yes and can make enough power to do damage to a stock transmission in the higher settings.