2004 Duramax Hypertech Programmers In Stock
 

We now have the 2004 Duramax Hypertech Power Programmers in stock ready to ship. Here is a link to the page: Duramax Programmers

I wouldn't use these on a D-max I know of atleast 4 duramaxs with these and are now messed up so bad that no ones been able to fix it yet. I have another post on this in the pcm diagnosis and tuning section detailing it more exactly.