While driving 60 mph, in heavy rain, flat roadway the vehicle down shifted from 6th gear to 4th and from 6th gear to 3rd several times. The shift to 3rd from 6th was hard and accompanied by a temporary loss of forward momentum. No check engine light came on. All temperature gauges remained within normal range. The tachometer jumped and fell wildly during each of the events. I pulled off the highway at the next exit, turned off the ignition, and waited a few minutes. I restarted the truck and proceeded without additional problems.

- Oswego, NY, USA

Emissions warning for my DEF system's Reductant heater code and possible connected wiring.

- Muskego, WI, USA

Apim sync module went out. This module services several components and has been issue in multiple models. Out of warranty by a year. Have to pay out of pocket. Blue def tank heating element causes check engine light. This is part of exhaust. Should be addressed.

- Colorado Springs, CO, USA

Nox sensor and module failure. Did not leave us abandoned, but if it was 1 week later, it would have left us on the highway on a weekend with no way to fix. Recalls for software updates cover up to 2013, but not this 2014 truck. This sensor failure should not leave the truck practically disabled.

- Bartlesville, OK, USA