This is the 3rd post, sorry! I was just told to post here. New to the forum!

Here's the scoop:

Have a Hypertech for a 2004 LB7, been running on the top setting for sometime. Picked up our Toyhauler (15000lb), I decided to drop the setting down to 1, and maybe roll stock until I got the exhaust done. Long story short, had the trailer hooked up during programming (DUMMY), and the programmer said (interrupted). Tried to restart, and got a 7C code on the Hypertech. Truck won’t start now either, the glow plug light doesn't come on when you turn the key to start. Unplugged the batteries 8 times, nothing... Had someone from a local shop bring a Tech 2 up, he couldn't fix it either (Had 3 code 6s, and 1 code 12 on the Tech 2), even with the mapping downloaded p:eek: rior...


My question is: New ECM, or something less financial invasive? Or could I grab a Banks Tuner, and try and start over?

sound like the ecm is smoked. i would recommened getting bank tuner but it won't do you any good till you have replace ecm and programmed it. the bank tuner work with the factory program and when you turn the switch it change where the bank programmer reads tow it to the dealer make sure they can not tell there was a hypertech on it hypertech is the worst programmer for the engine as it over pressure the fuel on regular basis causing damage to the engine