I am helping a buddy, he bought a DSP5 switch and installed it, I reflashed the truck and all went well, but the tune isn't switching, I opened the scantool and it says 5.01v and never changes when I move the switch?? I looked over all the DSP related folders in my tune and it all looks ok, I did this exact setup in another 03 truck last summer, worked fine??? Could the switch be bad?? I thought I would setup my V2 to use it to switch the tunes and see if that works, then we will know rthe switch is bad. I had him take the ECM plugs out again and double check that the pins are in and the right places, all looks good. I believe he bought the switch from Dmax store. Anyone have any ideas?? I really appreicate the help. Thank you!