onewheat

I got the same message last week at 95°+ out. I’m told it’s a problem with the Gear Shift Control Module. I’m at 58k on a ‘23 Sierra Denali with the console shifter. The part is on ‘backorder with no release date’ and it’s an $1100 repair.

I don't use it at all but my wife is logged into it constantly on her laptop while working. I'm streaming from my phone 100% of the time when I'm driving but you can't be logged into the truck and on ApplePlay at the same time.

I've been putting the Michelins on my truck since 2003. I couldn't wait for the stock Bridgestones to wear out - they are garbage in the wet.

I am also somewhat disappointed in the Bose system in my '23. It doesn't sound as good as the Bose in my '14 did. That being said, I didn't buy the truck because of the stereo. A stereo is important to me, but I'm buying a truck with a stereo, not a stereo that happens to have an attached truck. I may get around to upgrading speakers at some point, but as of now, it's good enough - just not awesome.

My '14 with a 6-speed (6.2) consistently ran around 200°F when not towing and would move up to maybe 210° towing. My 2023 with the 10-speed (also 6.2) runs in the mid-140° range and when towing I've seen 170°s - this is independent of ambient temperature. Even 200°F is a non-issue for transmission temperature. My transmission guy told me to start thinking about it if I hit around 230°F and up.

185k on my 2014 - always with Premium fuel. 16k on my '23 in the last 6 months - always Premium as well.

Your Crutchfield cart doesn't show with the link - mine does.

Some do, some don't. That indicates a problem in the system, right?

Mine definitely drops in gear - the last time it happened, I was going about 80 when I put my glasses in that cubby, then got flagged down for my gate being open and cooler sliding out. That's when it all dawned on me what was going on.

It definitely drops - I think it is very odd that it does. On my '14, you couldn't even turn on the cargo light while it was in gear to check your cargo at night. On the '23, you can just drop the gate, throttle down and dump your cargo without even stopping.

'23 Sierra Denali with MultiPro gate - on several occasions while driving, I found out that my tailgate has gone down without my knowledge. One time, just when I parked and walked around the truck, once when I went to back up and the camera showed the license plate and not behind me and I was flagged down by a guy on the highway who was motioning at the rear of the truck. I pulled over to find the tailgate down and my full cooler had partially slid onto the tailgate. What I believe is happening is a quick, inadvertent press of the Tailgate Release Button on the center console. The third time, when I got flagged down, it dawned on me that I had just put my sunglasses case in that cubby. I feel this needs some sort of update - I don't know if this can be a software thing or not? Why would a quick touch of that toggle button while I'm going 80 mph down the highway drop the gate? Why would there be no indicator of it happening - a dash light, a chime, nothing? Why would this happen in gear at all? I know you guys aren't the ones who would fix this, but has anyone else experienced this? I saw on another forum that multiple people have had this issue. Possible fixes include disabling the button unless in Park or while moving, requiring holding the button for 3 seconds, or maybe a double-press? If I lose a bag of tools or a cooler loaded down with icy beverages, not only is that $$$ from me but what if whatever falls out then hits another vehicle behind me or is struck by them while my stuff lies in the middle of the road? I'm not sure what can be done with over-the-air updates, but surely someone else has experienced this. Maybe GM is monitoring here (fingers crossed).

Does anyone know what cellular network that OnStar WiFi uses?

I had the Corsa on my '14 Denali and bought another for my '23. It sounds great. I think it's slightly quieter in the cab due to the rear exit vs the right side exit on the '14 and I also don't think you hear it as much because the 6-speed '14 always wound out the gears higher than the '10-speed does in the '23 in normal driving. Definitely not too loud and still ZERO drone.

I see that you already have it handled - good deal.

'23 Denali with the Standard Bed - I ordered it. I couldn't find a matching Std bed anywhere within 500 miles and the short bed was a deal-breaker for me. This bed size works well for me and the short wouldn't work pretty often. This fits in both of my garages with room to drop the tailgate and walk around it - I've never wished for a shorter truck. My '14 was a standard, too. The prep guy went to the General Manager at the dealer to ask if he knew they had received a standard bed. Apparently, they don't get many of them in 1500s.

I have it on my '23 Sierra Denali.

I haven't completely paid attention but I believe if it auto-sets (due to an incline), it will auto-disengage when you put it in gear. If you set it manually, it will disengage when you touch the gas, if you don't manually disable it.

Why would you cut the factory wiring and do a splice repair on a 1-month-old truck that has a warranty? The dealer can either unpin the wires from the connector and replace them correctly or order a new harness and whatever else is needed and just replace the miswired parts.

I went to back out of a parking spot last Thursday after a quick drink stop 2 hours into a 4-hour drive (in my '23 Sierra Denali) and I got that same screen. No backup camera, no any cameras - just the error screen. No camera Friday or Saturday, but nothing else unusual. Sunday - dead battery, and I needed a jumpstart. I drove 4 hours home and called the dealer Monday. They can look at it in two weeks. Yesterday (Wed), I opened the door and the running board came out, but the truck wouldn't start again, the dash gave me a myriad of errors (4wd, brake system, TCS, etc) which I'm sure was to the low voltage. I hooked a battery charger up - 12 amp setting, Automatic Charger and current regulated - for 5 hours and the charge needle was still pegged and the charger was pretty warm, so I dropped it to the 2 amp setting and left it for another 3 hours and unplugged it when I went to bed. I went out this morning to see if it would start. I think it was reading about 12.3 volts - it fired right up. I got the GMC logo on the infotainment screen for an extended period - probably 20-30 seconds and when it finally came up, I had lost the stored radio settings BUT I had cameras again. I don't think I have a shorted cell in the battery (I'm reading 12+ volts) but I'm not driving it for fear of it leaving me stranded. I was supposed to head out of town in it for the weekend, but I don't trust it, so I'm going to leave it in the garage without a Battery Tender on it and see if it starts on Sunday when I get back. I don't know if I have a parasitic draw killing the battery or if my month-old truck has a bad battery. I was thinking something with the camera system shorted and that was killing the battery, but now that the cameras are back, I don't know. I didn't have any battery issues until right after the cameras went out. Coincidence? I don't think low voltage caused the first camera error as I had been highway driving for 2 hours immediately before with no signs of a weak battery before then - the battery should have had a good charge and continued to work fine the next two days, then the next morning, it didn't have enough juice to crank the starter. The problem with the truck is troubling - BUT having to wait TWO WEEKS to have it looked at is MORE troubling. At least I have an $80,000 tailgate workbench in the garage now while I work on other things and drive something else.

Is that something you did or initiated or what?

Software update on the phone or the truck?

Why would Sport mode make it any louder?

I had the Corsa on my '14 - same comments as above - the first cold start in the garage worried me about the volume. It quickly settles down with the idle speed. Zero drone, when the AFM kicked in, it did sound a bit odd (helicopter, Subaru, whatever) but when you were on it, it sounded SO great - in tunnels or next to a passenger side wall of a building was awesome too. Highway cruising at 80, you'd never really know you had an exhaust with the windows up, but you're only turning 2000 rpms, too. I ordered another Corsa for my '23 Sunday - impatiently waiting...

I ordered the Corsa 21201 on Sunday - I'm anxiously awaiting delivery. I had the Corsa on my '14 6.2 also - loved it. I pulled it off before trade-in to sell separately as trade-in value was $0.

I was having this same problem with my iPhone 12 Pro - it was a little better out of the case but still would disconnect on longer drives. I saw a link on FB and looked at it - I was VERY skeptical but ended up buying one. It's been working perfectly with this thing. It is basically a spacer that centers the phone and brings it forward slightly. You could easily make one if you're handy - I was gonna make one out of foam to try it first, but then I started drink spending one night and just ordered it - like $18 and change delivered. It is made of some sort of plastic-like stuff - maybe like circuit board material since that is their main business. They also make a spacer for larger phones that just push it forward some without the side spacers the slim phones need. GMC Sierra 2022 Slim Phone Charge Adapter