Table 1 shows one common equipment related problems of the 2023 GMC Sierra 3500.
| Problem Category | Number of Problems |
|---|---|
| Equipment problems |
I was driving in the high way and the vehicle started having issues and then it completely shut off and wouldn’t drive or anything in the middle of the highway and the dash said it was reducing power.
We’ve had issues with the electrical system/brake lights when we hook any trailer (horse/boat/utility) to the truck. One issue is that the system shows unconnected and the trailer lights blink or do not work. We’ve brought this in to the dealer 3 times and they have yet to resolve the issue. The other issue of melted plastic on our rear sliding mirror. It just appeared one day, possible after using the rear defog button. We took it to the dealer and they also do not know what is the issue. We found several other blogs where owners have had the same issue. This is a newer vehicle, and we live in southern California where the temperature is mild. It just appeared one day. We are concerned this is a safety issue with the electrical system melting the plastic and possibly causing a fire. Here is a link to a blog: [xxx] lastly, this vehicle was advertised as having adaptive cruise and it does not have the capability (chip) to do so. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
Unknown truck unexpectedly comes to almost complete stop between speeds of 35 to 55 mph. Occurs more frequently around 40 mph. Truck has been in repair shop and diagnostic can’t explain the problem.