Gas Recirculation Valve (egr Valve) problems of the 2012 Dodge Ram 3500

While driving on the freeway at 50mph went to accelerate to pass a truck and nothing happened. Dead pedal, a big truck was coming up behind me and he had to hit the brakes as I was now in the left lane. He went to the right to avoid me. This has happened countless times. Dealer cannot figure out the problem, as no codes are set. They have replaced the apps, which is the gas pedal, the brake light switch, the ecm, the egr. None of these made a difference. Been back at least ten times for them to put truck on there computer, and no codes. They say, can't fix what they don't see. Dealer left the work order open for a long time so no evidence of all the come backs were recorded. Dealer is 40 miles away. Twice in one minute, one time only truck would not move from a stoplight. This only happened one time. I can make the truck do its dead pedal thing, but its out of warranty. It has something to do with the exhaust brake. It sounds like the brake is on, pumping the pedal does no good, just put it to the floor wait 3 or more seconds and will downshift and off we go. Like I said, when going to pass, moving into the left lane on a hill and nothing happens, just a little scary. I think it is a safety issue, it could create an accident. Rear ended. .