NEVADADSL
Member
- Aug 17, 2021
- 54
- 32
So my 2021 GMC Sierra 1500 LM2 jusst thew a check engine light. Took it to dealer and was told "turbo overboost code". Can't even have it looked at for a month they are so busy which sucks because the wife and I had a trip planned to pull our trailer to Glacier National Park in about 3 weeks. Not happy.
Dealer also stated they had not ever seen this code before. Anyone ever have this?
Dealer also stated they had not ever seen this code before. Anyone ever have this?
Last edited: