Table 1 shows one common electrical system related problems of the 2026 GMC Sierra 3500.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems |
Have been driving it on four separate occasions and the engine will start running rough and shut off leaving me with no power brakes or power steering. Once when I was going about 30 miles an hour the other three times when I was coming to a stop with a trailer on just took it in kendall Chevrolet for the first time they are still working on it but unable to duplicate the problem this is a very serious safety concern for myself and possibly for others that have the same issue.