10/2020 RAM 2500 6.7 6K miles. Towing 8K, cruise control set at 72mph, tow/haul mode engaged, exhaust brake set to auto, smooth hi way. All of sudden it was like ignition switch was quickly selected off/on. Cruise dropped off, tow/haul dropped off, exhaust brake dropped off, alternator dropped off (voltage went to 12.5), no throttle response for a second. Then flashing red lightning bolt (ETC fault), after shutdown and back up the red ETC fault was on solid. Dealer said they updated ECM software, then happened again in same exact manner and circumstance. Any one else have this?
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Truck reboots at 72mph towing 8K
- Thread starter JJC72
- Start date