Hi guys- new here. I drive a 2012 Pinnacle with M-drive, hauling mail. About a week ago it began failing to move, no throttle response, especially after hooking a trailer. Got it going a few times, but eventually had to tow it 3 hours home. It revs in neutral, but throttle response is disabled when R or D is selected. If you stab the throttle, it will raise the RPMs VERY slightly and fall back. Not enough to move the truck. NO fault codes on dash, gear indicator shows gear selection. I have ordered the cable to connect to my scanner- this is apparently the last year NOT equipped with a standard OBD2 jack- but I hope to get some insight here while I'm waiting. It started as intermittent, but is now completely inop. I did run my fingers over the harnesses that cross the frame. There was a similar post a while back, but no definitive fix or answer. TIA for all help- I'm retirement age, helping a friend get his new company off the ground.