Table 1 shows one common lane departure related problems of the 2020 GMC Sierra 3500.
| Problem Category | Number of Problems |
|---|---|
| Warning problems |
My intellibeam function stops working sometimes, I can still use the lights as normal but the intellibeam function stops every so often and starts working after about 2 to 10 mins. Lane departure warning stops every so often and will start working after 1 to 10 mins, I have noticed that when it stops working at night time then the intellibeam function stops working also. When I press the on/off button for lane departure then it will say that lane departure is unavailable right now. I have been getting a p20ee code showing something is wrong with scr nox sensor 2. Scan tool reveals that the sensor works normal and then stops. Once I clear the code then it works good for a few days.