Do you like the idea of custom tuning, but have no intention of tuning your own truck? Duramaxtuner.com is now offering custom programmed ECM's built to meet customer specifications. All you have to do is fill out the form below, and supply us with your VIN number. We'll ship you an ECM that's built to make the most of your parts combination. These ECM's offer five custom tunes which you can switch through while driving. Switch sold separate.

Replacing the ECM on these trucks is a simple straightforward process. On most truck, simply remove the trans controller from the radiator shroud (2x 10mm bolts), disconnect the cam-lock connectors, and pop the ECM out. Installation of the DSP5 is a simple process as well and instructions can be seen here: Starting on page 14 for LB7 & LLY, and here starting on page 9 for the LBZ/LMM