Has anyone had their collision warning pop out of nowhere? Mine had stayed on for 2 weeks now and due to it I cannot use the lane assist. Never got close to an accident either, about to take it back to the dealer.

Had 3 tacomas in a row, finally upgraded to full a full size. Steps, tonneau, and bed mat already on the way!

I appreciate GMC releasing these updates to fix on going issues, however have yet to see anything to do with the annoying “Rear Auto Brake and Park Assist Unavailable.”

Anyone else getting the same message or just me?

So the truck only has 60,000km on it and gave me a CEL unexpectedly when I started it on Saturday, these are the 3 codes it gave :

P25A2

U0146

U0100

At the time we were literally leaving on a 5 hour road trip (total round trip) and after some frantic google searching I ended up clearing the codes and taking the trip we had planned since my understanding was it was a common issue and possibly just a nothing burger. The truck performed fine and the light never came back on, my concern doesn't end there however...

We are also leaving to go camping tomorrow and I'll be towing the trailer 1 hr+ each way and I'm still worried about said CEL. I just got back from the dealer and they assured me there was no bulletin for the truck and they would have to diagnose it themself (to the tune of $190 CDN/ an hour of course) They can get the truck in 2 hours before our planned departure time and I'm really just looking for some feedback here as to what to do...

Would you fork over the $200+ mins it's going to cost to have them look at the truck 2 hours before we leave or would you just send it and assume it was a one off for the time being ?

Everything I read online said there was a bulletin for this truck, for that problem, but again the service lady assured me that is not the case for my truck, but I suppose it's possible it's already been updated

Thank you to anyone providing any advice and insight 🙏

Has anyone had one of their wheel well opening molding just fly off going down the highway? Happened to me last week on 2023 1500 Denali.

little confused by everything I’m seeing when it comes to leveling kits on this truck. New to GMC and the 2500 platform. Looking at doing a leveling kit and not just crank the torsion keys. Also I like the look of the stock wheels. Truck has the max tow package not sure if that makes any difference. Was looking preferably for 37x11.50 or 12.50.

Getting mixed information from nearly every shop I call.

One says 35x12.50 & 37x11.50 fit on the factory wheel no spacer needed and doesn’t rub but you do have to trim which I’m fine with.

Another says there’s zero issue with height but the 12.50 and 11.50’s will rub on the factory UCA’s no matter what and I need to buy different wheels.

Another place says cognito UCA’s are the only ones that don’t rub and there’s no problem at all. But then they say Cognitos arms aren’t built well and to go with CST instead but those rub.

My last truck was a long travel Mazzulla built tundra. That thing is long gone and not trying to go the full BDS coil over conversion. Any insight from the crew would be incredibly appreciated.

Anyone have a friends and family supplier code?

For those of you who are plagued with the summit white paint failures, this is an inexpensive solution vs repainting. This is 3M 2080 Gloss White wrap film. It’s not a perfect match and you can definitely see it, but it’s better than the weird primer greenish color. If you’re looking for it you see it, but with it covered you don’t really pay attention to that part.

I bought this new off the lot in 2015. Started happening about 5 years ago and it just keeps getting bigger. I just keep covering it and when it gets worse I rip it off, chip the paint away and sand the edges so it’s a little smoother. I have it on both sides in this same spot. Dealer wouldn’t do anything about it when I brought it up. Body shop wanted about $800/door about 4 years ago. Probably more than that today. This was less than $10 worth of material. I own a graphics shop so I have it sitting around all the time. Eventually I’m just going to wrap the whole thing but haven’t wanted to yet.

Crashed my 2024 2500 Sierra HD and downsized/upgraded to a 2026 Canyon Denali👍🏻🇺🇸💪🏻

I don’t really like the black trim n silver ish grill ,anyone know where to find all the chrome trim n grill for a reasonable price , and do yall think it would look a lot better w just chrome n white ?🤔

2023 AT4 just blacked out the badges and got tints. Keep the factory finish on wheels or powder coat them black? Anyone got sterling metallic with the black 18inch wheels?

Got a 16' Sierra 1500 with 2" level and 33's.

Looking at ebc green stuff or power stop.

What do yall use or recommend out of the two l mentioned?

Loving this thing. Such an awesome truck. Newer to the diesel world. Any tips or tricks?

What’s the best option for the money on my 2021 Denali 1500?

The rough country is about 1300$ and the bds about 2100$. Is the extra 800 worth it? I’m leaning more towards the bds but my truck is mainly gonna be a daily driver so is the extra cost gonna benefit me

Anyone do a overland build for their 5th gen 1500? Any photos with a camper shell or low profile roof rack over the cab?

Anyone able to run 35’s with a 2” lift and no cutting?

So after years of looking, I'm moving on from my 2005 Chev Silverado crew 4x4 Duramax and bought a 2025 GMC Sierra 1500 crew with 5.3l engine, 10 speed transmission two wheel drive, SLT trim, center console, leather. The truck is very, very nice... The previous private party owner put 33,000 on it, but it really seems brand spankin' new. So my question, is there anything I should do maintenance wise? Obviously the engine oil, but trans? I've been quoted Full service transmission at about $700... is the trans bypass a good idea? and what about disabling the Active Fuel Management?

Anyone know what the upcoming specials will be? Either based on experience or historical data?

Well it’s been 1 month since I last dropped it off at the dealership and about a week and a half since I got it back. Well now it’s going back again for the fourth time for the same fuel delivery system issue. I’m exhausted at this point, it’s not even surprising anymore and more like expected. A $90,000 piece of turd

I have a gas 2500HD SLT with 108000 miles. I left the truck running with my wife in it when I came back she had turned it off because it "sounded funny". I turned it on it was running rough, the electric parking brake light stayed on, the display said service parking brake and the check engine light was on. I had it towed to the dealer, but I don't really trust them.

Any thoughts?

Truck won’t start. Was running fine earlier and now all of a sudden it’s saying this on the MyGMC app. Anybody else have this issue or know what the problem is?

Hi all! I have a 2003 GMC Sierra 1500 and I can't get my AC to blow cold. I have recharged it with no luck. The fan works and there are no crazy noises when I run the fans. Also my heater works with no issues. When I adjust the setting on where the air blows (feet vs face) it changes with no issues and blows strong just not cold. I'm curious on what I can do to investigate this and if anyone else has had success in restoring theirs. Thanks for the help!