2015 High Country 6.2l 77,000 miles Electrical Issue

BloodVessel · July 8, 2023

Needing help with what happened with my truck yesterday........Drove approx 30 miles and parked, noticed I parked like the 65 year old I am, and immediately got back in to move truck. Inserted key and turned - NOTHING. No lights on dash, no radio, it was like someone took the battery out. Checked to make sure battery was still intact (it was) and tried to start again. This time it started, but all personal setting were gone. Also got a message on DIC to lower and raise driver side window.

Had to stop on way home and had another event. This time got a "service security system" message on DIC.

Gpt hpme and changed to alternate key and so far everything works ok.

Anyone have this happen before? Any idea what caused this? OK Go!

Thanks, Bill

TNTSierra · July 8, 2023

This is exactly why I bought the extended warranty on my 2018 Denali. For all the electrical "garbage" they put into vehicles now. It could be a list of things. I would continue to us "spare" key for a while and see how everything performs. Unhooking the battery over night "could" reset some things on your truck and then reuse the "main" key to see if that helps/works??

I know it would cost money but have a "main" key scanned?? I'm just trying to throw some things your way, hopefully it was just a glitch...good luck.