No, the computer would just incrementally lower the top speed. After 100 miles it would set to 60mph, 100 more to 50 mph etc. It would basically force you to take it to the shop.

With mine it was an issue with the diesel exhaust fluid system. They had replaced pretty much the entire system by the time it was over. I am just assuming it was a design flaw with the 2.8 duramax. I could have lived with it but when it threw the code it disabled the engine.

I successfully lemon lawed my 2020 diesel colorado last year. The coordinator at the state was very helpful. In my case, they had 6 attempts to fix the problem, including g bringing in a hot shot mechanic from out of state. No dice.