12_cummins
New Member
- Joined
- Apr 19, 2021
- Messages
- 7
- Reaction score
- 7
I had an issue with my '21 3500 SO 68rfe a few days ago. I was making a 120 mile trip with a loaded enclosed trailer, not sure on the weight but I would say for sure under 10,000 lbs loaded. I had gone about 50 miles with the cruise set at 72 mph, no issues with shifting to this point at all. Truck has 8600 miles. Pulling on flat ground at the time of the issue, heard a very loud bang, cruise kicked off, lights on the dash flashing and dinging, check engine light came on, now stuck in 4th gear. Truck slammed from 6th to 4th. Pulled over and tried to get truck to reset, nothing. Drove the rest of the way 70 miles at 55 mph in 4th to the nearest dealer. They are saying that the valve body is bad. Waiting on parts to arrive next week.