SinisterSS

Recommend changing the oil soon to help get any manufacturing and assembly process leftovers out of the system and enjoy the glory of the 6.2L.

The 2024 active exhaust pretty much eliminates the need to purchase an aftermarket system. Whisper quiet or loud at the twist of the dash switch from Normal to Sport.

Update: After 24 hours of letting it sit, the driver's side running board folded in as it should as soon as reverse was selected to back out of the driveway. Putting it down as the second electrical gremlin in 2k miles; first was the back-up camera didn't work one day but also magically fixed itself.

Started up my 2024 Denali Ultimate today and put the shifter in Drive and could immediately hear the driver's side power running board cycling back and forth from "out" position to "rear bed step" position. After repeating that back and forth movement several times, the running board is now stuck in the out position and won't move at all to retract, or move to the bed step position with the switch at the rear of the running board. Using the on-screen menu, can command the passenger side to move to the stow, deployed, or bed positions without issue so at least the right side is working. Beyond the normal "unplug it" by disconnecting the battery to reset the computers, any other troubleshooting to figure it out before calling the dealer on Monday? Looked in the Owner's Manual and don't anything that is obvious labelled fuse. And if it was a fuse, would think both sides would stop working.

That was hurting my brain.