Weird Shift with trailer hooked up....??
Okay so this just happened today for the 1st time. Towing the 5ton excavator this morning, shifted fine until the 1st stop light. Then shifted super fast(had OD off), basically from 1st to 3rd when under 30mph. Did it the whole way to the job. Parked trailer, shut truck off, unhooked trailer.
Truck now drives as is should.... Weird right??
Hooked up 2nd trailer with 6ton excavator to take it to get serviced. Truck shifts and drives completely normal.
1st trailer has regular bulbs, 2nd trailer has LEDs...