Battery

[Jason Stuart Walker]

I had a dead battery, had it checked to make sure it was dead.  Bought a new battery and once I got it installed the truck lights flickered and the leveling system started and then everything stopped. Everything is connected properly but it’s as if the new battery is completely dead. I tested it and it’s fully charged. Stumped at what could be going on. It’s a 2022 GMC 4WD Elevation series. 

[davester]

poor/bad/not tight & clean connections to the battery?  new batteries can also been bad out of the boxj.

[diyer2]

Electronics don't like low voltage, so you may have a problem from it. I don't let batteries go dead for this reason. 

Did you try a reset by removing the batteries cables and let it sit for a few minutes, then put them back and try it.