No response from ECM

[Sledhead]

It runs and STRONG! I downloaded the DSP5 tune which started this whole deal and it started :woott:

No idea why the stock tune wouldn't run it as the DSP5 is built off that but whatever. It lights up the duallies at will on drive pavement :coolspot:

I have had a hell of a week with technology; router, internet, cell phone, even my $%^&ing voltmeter sh!t the bed. Must have cut Bill Gates off in traffic

Awesome support from EFI Live, thanks for the help!

[AFTERMATH DIESEL]

So what resolved your issue?

[Sledhead]

So what resolved your issue?

I don't know. The stock tune would write fine but the truck would crank and not start. VATS relink was done 2 or 3 times, batteries unhooked, computer rebooted, write the tune again, etc and no start. I was packing up to call it a day and tried my DSP5 tune which started the whole issue and it ran. It must have been a VATS issue? Now I'm scared to change the tune.