WarEagle1
November 13th, 2013, 10:43 AM
I purchased EFI Live V2 scan/tune a few months ago, but did not intend to do any DSP5 tuning at the time. So, I used it on my 2002 LB7 Duramax to read the ECM, and then update my speedometer for my larger tires, and to disable the VATS. I've been driving it for a couple months since then, and all has been well. Recently I decided to try to upgrade to the DSP5 OS, just to check it out with only my stock tunes. So, I followed the upgrade instructions, and everything seemed to go well right to the end of the full flash. It said it completed successfully, but when it did the ECM reset, the SES light started flashing really fast, and the VOLT meter was flickering, and the several relays under the hood were all clicking at the same fast pace. I turned the key off and waited, hoping that when I turned it back on it would be normal, but no, same thing. So I tried to reflash my stock tune, and when it does that, it starts the script, but then before it ever starts tuning, I get the $0101 lost communication with the ECM error. Everyone I've talked to says that sounds like dead batteries, or not enough fuses pulled, or blown fuses. So, I've checked all of that, including trying the reflash with the charger hooked up on a low amperage, but it's always the same. In searching, I've found a couple of instances that were almost identical, but the thread went dead, or it seemed like they ended up with a new ECM. I just don't get it. I can still connect to the ECM, and the V2 will read the VIN, and OS version, but the confounded flickering (or surging) won't let it stay connected to do the flash. Any help would be greatly appreciated!