2015 buying advice, what to look for?

[the 18th letter]

Yours doesn’t have the true adaptive cruise. Mine also has the 3 settings but all that does is give you the distance warning on the dash. The cruise on our trucks won’t speed up and slow down the car to match the car speed in front of you.

I beg to differ. Mine will slow down when I run up on another car and will spped back up to my selected speed if I change lanes and there’s no car ahead of me. The 3 settings adjust this from 1, 2, or 3 car lengths.

 

[ReaperHWK]

I beg to differ. Mine will slow down when I run up on another car and will spped back up to my selected speed if I change lanes and there’s no car ahead of me. The 3 settings adjust this from 1, 2, or 3 car lengths.

According to all online sources as well as my 2015 LTZ which is a higher trim model than yours you don’t have it. So it’s you against the internet as well as GM.

 

[GMCChevy]

If you can find one with adaptive cruise get it. We love it in our 2020. I don't know if I'd want to drive a vehicle this large and powerful without it. Helps tremendously with keeping the speed you plan without fear of getting distracted and creeping up into high priced ticketing territory.

It seems to be hit and miss. Some people love it others hate it.

Regular cruise also won't go faster then you set it, paying attention does the rest.

 

[the 18th letter]

According to all online sources as well as my 2015 LTZ which is a higher trim model than yours you don’t have it. So it’s you against the internet as well as GM.

View attachment 446520

No need for me to make anything up on the internet.

 

[GMCChevy]

No need for me to make anything up on the internet. I can’t say the previous owner didn’t have it done but it’s def there.

According to both sales brochures and owners manuals it was optional in 2015.

 

[gtrslngrchris]

Yours doesn’t have the true adaptive cruise. Mine also has the 3 settings but all that does is give you the distance warning on the dash. The cruise on our trucks won’t speed up and slow down the car to match the car speed in front of you.

My 2015 Denali does speed up and slow down so did they really make 3 different levels of cruise control in 2015? I would also argue that most of the time while I don't mind the adaptive cruise it is absolutely brutal about minor things causing it to absolutely demolish your momentum if you are having to occasionally maneuver around a slower vehicle. I personally would prefer normal cruise after having it for half a year but it isn't as bad as I thought it would be.

My understanding is the 2015 wireless charging center console lid is also outdated and won't work with most modern phones. I also can say that my Samsung Galaxy S23 Ultra doesn't even lay flat in the center console charging area so if you have a good size phone it is moot anyway.

 

[Chevy_59]

Mag rides are expensive so I was just saying check if any of the magnetic ride special sauce is leaking. If they are you need new shocks and they are $500 a piece or more.

Your scan tool will only read the ECM; it won’t be able to read any of the computers in the truck such as the BCM, stab control modules, side detection modules, entertainment systems, collision detection and airbags, etc. those modules throw their own codes and have their own test routines.

Sometimes you need to recalibrate modules such as if you replace a mag ride shock it’s good to do the zero procedure which only a bi-directional scanner can do when it talks to the SCM.

I've seen that the mag rides are pricey, but if I get this for the price I'm hoping to, I'll still be ahead even if I have to replace them. My scan tool talks to the bcm and other modules on the wife's Impala and my 02 Burb. I guess I'll find out if it talks to this one when I check it out Tuesday. What is a good scantool that would do that without breaking the bank if I need to upgrade?

 

[Chevy_59]

Yes Sir

Would there been any visible clues as to said issues? Hopefully they have been dealt with in the last ten years.

 

[ReaperHWK]

My 2015 Denali does speed up and slow down so did they really make 3 different levels of cruise control in 2015? I would also argue that most of the time while I don't mind the adaptive cruise it is absolutely brutal about minor things causing it to absolutely demolish your momentum if you are having to occasionally maneuver around a slower vehicle. I personally would prefer normal cruise after having it for half a year but it isn't as bad as I thought it would be.

My understanding is the 2015 wireless charging center console lid is also outdated and won't work with most modern phones. I also can say that my Samsung Galaxy S23 Ultra doesn't even lay flat in the center console charging area so if you have a good size phone it is moot anyway.

All I can tell you is my 2015 LTZ has the “normal” cruise and doesn’t care about anything in front of the vehicle.
So maybe I’m the ass spreading false info?

Anyway, yes the wireless charging pad if it was stock OEM in 2015 won’t support a lot of new phones in forgot. I didn’t mention that because I replaced the charging pad in mine with an updated module that works on new phones…….

 

[ReaperHWK]

I've seen that the mag rides are pricey, but if I get this for the price I'm hoping to, I'll still be ahead even if I have to replace them. My scan tool talks to the bcm and other modules on the wife's Impala and my 02 Burb. I guess I'll find out if it talks to this one when I check it out Tuesday. What is a good scantool that would do that without breaking the bank if I need to upgrade?

I use the Autel ones, you’d need to spend a minimum of $500 to get one that does most things like this:

https://a.co/d/1es9KWZ

 

[mike singleton]

Also be aware that with a 2015 you are missing some features the later trucks have. Like wireless charging, CarPlay, and adaptive cruise. Maybe some more?

If I knew what I do now I would have gotten a later model year than the 2015 I have. I added the wireless charging but the CarPlay and adaptive cruise aren’t cheap/easy to add. Just FYI.

I don't know - Sometimes simplier is easier to maintain and cheaper to service.

 

[SpyShops212]

Stay with the 2018-2020 6.2 with the 10-speed.

 

[Big Mama]

My 2015 Denali does speed up and slow down so did they really make 3 different levels of cruise control in 2015? I would also argue that most of the time while I don't mind the adaptive cruise it is absolutely brutal about minor things causing it to absolutely demolish your momentum if you are having to occasionally maneuver around a slower vehicle. I personally would prefer normal cruise after having it for half a year but it isn't as bad as I thought it would be.

My understanding is the 2015 wireless charging center console lid is also outdated and won't work with most modern phones. I also can say that my Samsung Galaxy S23 Ultra doesn't even lay flat in the center console charging area so if you have a good size phone it is moot anyway.

Not sure about yours but I can turn adaptive cruise off on my Sierra.

 

[SpyShops212]

You can update your charge module and phone size from a 2018-2020.

 

[Chevy_59]

Just a quick update, been busy the last few days. I went and checked it out the other day. First impression pulling up to it was pretty good, looked as good as it did in the pictures. Exterior looked clean and no major damage or signs of previous repair. Interior looks in good shape, no real damage but use a good cleaning/detailing. Underneath looked good, actually real good for our area. Fuel and brake lines clean, no signs of leakage at pinion, axles, tranny/transfer case, some signs of oil at rear of motor but doesn't look shiny wet/fresh. Frame and suspension look in good condition, again real good for our area. Front struts were just replaced this fall and the rears about a year ago. Trans was rebuilt just over 13,000 miles ago and he showed me the paperwork. Engine bay looks pretty clean, pass exh manifold leaking at #8 could see the carbon around the port. Couple moist areas, but nothing that caused concern right now. Was glad he had not had it running before I got there so I could hear cold start and it was cold that day(25). Fired it up and there was some racket for about 5-7 seconds and then it settled down some and could still hear a ticking but wasn't real sure if it was valvetrain or exhaust leak. Let it warm up a few minutes and it quieted down a lot but didn't go away completely. Took it for a drive and it drove well, shifted nice, no pulling or pulsing from the brakes, rode nice and quiet on neighborhood streets and good for a short jaunt on the highway. Everything in the interior seemed to work, seats moved and heated up, rear seats folded and unfolded, heat and defrost were good and I'll have to take his word on AC for now. Overall I was satisfied with the vehicle, nothing major wrong and the owner seemed trustworthy and not trying to hide anything. Only thing I wasn't really expecting but not surprised at all about was some bubbling on the rockers under the rear doors. It wasn't shown in any of the pics, but at the price it's not a big deal to get it fixed, just unexpected. So we are going to meet up at his bank tomorrow and I'll be coming home with it and I'm sure will have more questions after that.

 

[Big Mama]

Congratulations. Sounds like you found a good one. Nice to hear the trans was replaced. I ran into the same issue with AC. I bought one in January in PA so I assumed it worked. Bad assumption on my part. Post up some pictures when you get it cleaned up.