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Discussion Starter · #1 ·
Have a 2020 Denali HD have been having intermittent infoscreen issues. Today screen wouldn’t turn on, dealer recommended disconnect batteries To reset. Worked fine. Later in day CEL lit then more warnings. 4 wheel drive off, check ECS check trailer lights(no trailer connected) check brakes etc. got home and died in the middle of my drive way. 1 year old and 47k miles. Have had multiple pr with this truck. Anyone else have this issue?
 

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I would start with checking grounds, then battery and alternator.
 
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