Some weird Electronics and error messages?

[k5blazerkeith]

So, we've had the 2016 Yukon XL since late November, and starting to see some weird things popping up here and there. Check Engine light has popped up twice now, but nothing in computer when scan for codes...light went off at next key cycle.

This morning, the truck would not start when I pushed the button, and after several tries (had screaming baby and raining like crazy distracting me), I finally saw the error message in the DIC - it said that the vehicle was NOT in Park?? It definitely was in Park, and had been all night long, but in frustration, I tried to move the shift lever and exited vehicle...locked doors and tried everything again. It started right up. ??? Anyone ever had that one pop up? The start button also doesn't always respond the first time you push it, especially when just trying to get ACC power (like to listen to radio with engine off, etc). Hmm.

Experienced LOTS of phone disconnects, and Pandora app fails a LOT...

Always been a GM fan (probably my 10th GM), and have seen some crazy gremlins over the years (my 04 GTO would "peg" the speedo at 200mph while driving sometimes, with EVERY warning light it had lighting up!)

 

[k5blazerkeith]

Ok, it's getting weirder. This morning, went to open the XL, and like usual, I pushed on the button on the door handle to unlock with the passive entry feature, and when I opened the door, the vehicle alarm started blaring! Got it turned off. But as I was driving, I went to change radio presets using the steering wheel buttons, and all my presets were gone! But they are still on the radio screen, just not on the DIC?? I could hit the preset over on the 8" radio screen, and then that channel would show up on my DIC, but still could not change channels using the steering wheel buttons...

CEL light was on again last night too, then went off on way home, not on this morning.

 

[NowZoomer]

Take videos and take it to the dealer

 

[k5blazerkeith]

Haven't had chance to take it to the dealer yet, but had another issue last night. Went to leave a restaurant with wife and baby, and truck won't start...I see the "Vehicle Not In Park" message in the DIC again, so I try to move the shifter...it's solidly in Park and won't move anywhere...without warning, as I'm messing with the shifter, the starter starts cranking and the truck starts on its own! Nice. CEL light is on now, and instead of going to the supermarket as planned, my wife wants to go home in case we have an issue. I go to leave, and truck feels very odd...it's like the feeling of the WORST slipping transmission you've ever felt! I couldn't accelerate, engine feels like it has 20 hp...so I repark it, cross my fingers, and turn it off...I open doors and cycle through a lock/unlock, then hit the ignition button. Truck starts, transmission feels normal, CEL light is still on. WTF?

CEL light is on today still, truck drives normal. Headed to dealer as soon as I can...better not be the start of endless problems...