Table 1 shows two common engine and engine cooling related problems of the 2020 GMC Sierra 2500. The number one most common problem is related to the engine and engine cooling (nine problems). The second most common problem is related to the check engine light on (one problem).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Check Engine Light On problems |
Catastrophic engine failure after taking it in for the April 2025 recall. Complete engine replacement needed Read details...
As I was driving home my check engine light came on and all of my lights went out. I had no tail lights and the radio started saying no signal detected. The dash screen was saying service keyless entry system. And I had no running lights but my headlights. Read details...