Table 1 shows one common vehicle speed control related problems of the 2019 Chevrolet Silverado 2500.
| Problem Category | Number of Problems |
|---|---|
| Vehicle Speed Control problems |
I was driving down the road at approximately 55 mph when all of a sudden, my truck decelerated and a warning signal displayed on my dash indicating my speed was being forcibly reduced to approximately 30 mph. Fortunately, I was on a rural road versus the interstate. I pulled over and had an obd2 reader. The reader indicated I had a p-2138 error code from a "voltage correlation error between the two accelerator pedal position (app) sensors". I was able to limp along with emergency flashers to return home. After driving approximately 10 miles, the "issue" resolved itself. I have since replaced the gas petal assembly after learning this is a common failure on many years of the chevy silverado series.
When vehicle is accelerating anywhere from 30-50 mph, the truck loses power for several seconds, and starts sputtering or chugging. The rpm on the dash starts bouncing up and down. This goes on for several seconds and truck slows down. It then goes away and can continue driving. However, when towing trailers, the effect is only increased and the truck slows down even more.