2018 GMC Sierra 2500 Denali HD
Hi I'm new to the diesel community and just bought a 2018 Denali HD Duramax 11 days ago. To the best of my knowledge no one prior to my ownership has done anything to the motor, transmission or exhaust. Yesterday I was driving normally when every light possible came on. 4wd fault, ABS fault, stibilitrack fault, power steering fault etc. Got home and truck would not start back up right away. Waited 30+ min and came back on with a solid check engine light. Today I drove it for maybe 1 hr and went into limp mode with all the dash lights coming on again. Check engine light has been solid the whole time and now 1/2 shifts late as if I was towing and 2/3shifts so hard it jerks the whole truck. Has about 142k and im not sure if I should bring to the dealership I bought it from (2hrs away) or to a local GM dealer. Any insight or help is very helpful. Thank you in advance!