Jump to content

2017 Sierra Denali ultimate problems?

Debo3883

Recommended Posts

Debo3883 Enthusiast

Debo3883

Posted
Posted

Hey guys it's been a very long time since I've posted. I had one the first 2014 Sierra Denali's with a 6.2 in Pa back in late 2013. Long story short, that truck was a entire bucket of problems that made me get rid of it in a little over a year.

 

 

So my question is: Have all the issues been fixed in 2017? My local dealer has the sexiest looking 2017 Denali ultimate in and I'm just about to pull the trigger. Are there any known issues in 17 that I should be concerned about? Please let me know and thanks in advance!

  • Replies 31
  • Created
  • Last Reply
kellys68ss Enthusiast

kellys68ss

Posted
Posted

I have a 2017 with the 6.2 and other than the tranny clunking and the Android idol being a bit of a shitshow I absolutely love mine.

 

Sent from my SM-G935V using Tapatalk

Debo3883 Enthusiast

Debo3883

Posted
  • Author
Posted

I have a 2017 with the 6.2 and other than the tranny clunking and the Android idol being a bit of a shitshow I absolutely love mine.

Sent from my SM-G935V using Tapatalk

 

 

Good to know. Thanks for the reply!

demar002 Enthusiast

demar002

Posted
Posted

I have a 2017 Denali with the 6.2. The clunky transmission the seat clicking issue the popping somewhere in the dashboard are my issues. Truck has 4k on it I planned on waiting until my first oil change to address. The tranny issue became too annoying to wait so it is at the dealership now. I will say that if this does not fix the issue I will trade it in.

Debo3883 Enthusiast

Debo3883

Posted
  • Author
Posted

I have a 2017 Denali with the 6.2. The clunky transmission the seat clicking issue the popping somewhere in the dashboard are my issues. Truck has 4k on it I planned on waiting until my first oil change to address. The tranny issue became too annoying to wait so it is at the dealership now. I will say that if this does not fix the issue I will trade it in.

Ahh ok that's not what I wanted to hear. Thanks for answering my questions!

SandyNeck Enthusiast

SandyNeck

Posted
Posted

I have a 2017 Sierra Denali Ultimate with the 6.2L and around 7K miles on it so far. There have been a few annoyances along the lines of those mentioned in other responses, but nothing that would make me regret buying it. It really is a very nice truck and I'm fairly confident that you would be happy with it.

Best Of Luck.

 

PS: Do take it for a test drive at highway speed and check for the "Chevy Shake" issue before pulling the trigger on the purchase. That problem often seems to be irrepairable.

jhbrennan Enthusiast

jhbrennan

Posted
Posted

Have 2017 Yukon Denali with 2500 miles. Love the engine when it runs correctly but have already had it in twice for misfires - first time replaced injector on #6 - ran OK for 20 miles then misfires again. This time replaced bad coil on #4. Hope this fixes it.

diyer2 Senior Enthusiast

diyer2

Posted
Posted

IMO

You have a good chance of getting a truck that is free of problems. It's a roll of the dice. :happysad:

Debo3883 Enthusiast

Debo3883

Posted
  • Author
Posted

Thanks for all the responses guys. My 2016 Yukon Denali has a weird sound after it's sat for a while that sounds like the rear windows are down. It's a buffeting of sorts but it's flawless other than that. My 2014 left a sour taste in my mouth but in my opinion these are the nicest trucks on the market, so I guess I'll give it another shot.

powerhaulic Enthusiast

powerhaulic

Posted
Posted

'17 SLT max tow 6.2 17k on it, couldnt be happier

My mom has '17 Denali Ultimate 7k on it, she is is very content.

Truck916 Enthusiast

Truck916

Posted
Posted

16 Denali 5.3. 10k on it and overall very smooth. Tranny does act funny once in awhile but really really minor.

foghorn23 Senior Enthusiast

foghorn23

Posted
Posted

17 Denali with the 5.3 and 8 speed. So far no major issues whatsoever. No vibrations. Transmission is smooth. I did do the clamp on the seat to stop the clicking.....Fixed.

GMC_SD_Ult_16 Enthusiast

GMC_SD_Ult_16

Posted
Posted

My 16 Sierra Denali Ultimate has been great overall... No clunking in tranny likes other describe. I did have to have my windshield washer pump changed out under warranty. Not had any issues with vibrations some describe. Currently at 26,000 miles. I have changed out my muffler to a 12909 Magnaflow (removed resonator, stock muffler and flapper) and added an AFE Momentum Gt cold air intake. Best vehicle I have ever owned. Love Android Auto on this system with both Google Maps and Waze running the best constantly updated Navigation systems available.

 

Sent from my SM-N920V using Tapatalk

termite01 Enthusiast

termite01

Posted
Posted

2017 Denali Ultimate with the 6.2 and the 8 speed, 5k miles. Astounding gas mileage at 22.5 to date. Tranny does clunk once in awhile, and there is a very slight buzzy vibration on the highway but otherwise perfect.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Deadwood
      primary drive belt tensioner

      By Deadwood · Posted

      I bought belts and pulleys for my '20 L5P at Rock Auto a couple years ago. I have used them for many years, and almost always save significant money, especially when I buy maintenance stuff ahead of time.   They carry many OEM parts, which is all I use unless an aftermarket is shown to be same/superior, or if it is an insignificant part or unavailable OEM part anywhere else. RA is usually lower priced, often by a bunch, but parts are sometimes unavailable or out of stock, and I do shop around and sometimes find better prices at other sites.   Be aware that you pay shipping, and if you buy multiple items and they are coming from different warehouses, the shipping can kill the advantage. Planning ahead is best if possible.   If you have a transmission service in the near future, check out their OEM (AC Delco ULV) fluid, usually MUCH less than anywhere else.
    • Deadwood
      10L1000 anyone with High Mileage ? I hate Damocles....

      By Deadwood · Posted

      New member here, very long time occasional guest. Saw this thread, thought it would be a good time to contribute someting. It is only my experience and not a claim that everyone will have the same.   I bought my '20 3500 L5P new and have put 99.9% (literally) of it's current ~400k miles on it myself, with over 50% of that towing loads between 4k to 15k, and to me this truck has been nothing short of amazing. For the first 235k I had zero issues, and from there until 321k I replaced a NOx sensor, two failing glow plugs, and three of the notorious injector connectors. I believe this truck is in part, a testament to good luck, but also good care and following a decent maintenance schedule (I also keep meticulous records.) As a result, it looks as good as a well cared for 70k rig, up and down, inside and out.   At some point before that 321k mile mark I began to get a little spooked about the 10L1000, especially the valve body. Word of mouth about potential issues prompted me to jump on the net to sift through all the noise and determine what all the fuss was about. I routinely take long trips, coast-to-coast and points in between, so roadside breakdowns can be '...a thousand miles from nowhere' and a bit of a challenge, and though I had no issues, my guard was up and activated.   And then I stumbled across a chance to salvage some parts off a new 2025 that had been wrecked in transport. I grabbed a few wear items (alternator, pulleys, etc.) and on a whim asked what the ten speeder would cost me. It was cheap...really cheap. I knew some changes had been made in the '24+ version 10L and were supposedly not compatible, but I called service/parts at my local Chevy dealer and asked why and they didn't know. A call to a well known aftermarket transmission outfit revealed it was very likely it would be fine, but to them not 100% sure.   Because it was cheap (really cheap) and I was spooked, I took the chance. Had it installed by a local shop and it worked like a champ, shifted just like the original. At it's first service at 37k, I had the shop put in a Next Gen valve body kit, which after some initial hiccups and rough shifts, smoothed out though with somewhat firmer shifting.   All that said, I have a very serious concern about my newer transmission as just two weeks ago it suddenly began to exhibit a strong reluctance to engage forward or reverse. It was a bit past due anyway so I took it in for service. The reason it was sticking was due to 'glitter' in the fluid clogging the filter...not good folks, often indicates a converter giving out. We ended up going ahead with the new filter and fluid, first to see if it would move and shift, and then if so buy me a little time. It did, and I've driven it over a thousand miles and it is shifting smooth, no noises or slipping. Regardless, it looks like a third gearbox is in my future so I can resume taking long trips with some confidence. In the very short term, my curiosity will have me examining the fluid to check how much glitter has reappeared.   An earlier poster had alleged, in the context of 10L100 failures, that it is another example of how we seasoned citizens somehow descend into hysteria, lose control of our senses, and react irrationally after brief encounters with the idiocy of the internet infosphere. Let me say (and I have used and abused said internet since it's infancy) there is no segment of the populace that has a corner on over-reaction to digital garbage. Just as my offering of experience in this arena is purely anecdotal and should not be considered gospel or all-encompassing, I believe it is still worthwhile information to consider, along with other relevant anecdotal experiences about things like complex transmissions, especially when balanced with other sources.   So to answer the original question, yes I got high miles out of my first 10L, trouble free for 321,000. Now I really wonder how much longer it would have went. Did I 'overreact' to the internet ghouls by replacing a 'good' one with a 'bad' one? Maybe. Who knows, the thing might have taken a puke a 100 miles later. So I'll just fix it again, then move on and start thinking about all the other stuff that will eventually wear out. It still has the original brakes (they're at ~60%), original injectors/pump, turbo, water pump, etc....pretty much original everything. Knock on wood.
    • swathdiver
      6 Speed vs 8 Speed

      By swathdiver · Posted

      At peak temperature.  They get to cool down and warm up more, especially those with the external cooler.  I have three GMT900s and one of them has over 225K on its original transmission.  Fluid gets changed about every 36K miles, all of it.     It's not the bean counters, it was the government.  They had to meet CAFE standards and other government requirements.   To get around that, we tune them and modify them to our liking.
    • GMCustomerService
      Will not stay in Reverse

      By GMCustomerService · Posted

      Our customers' safety isn't something we take lightly. To ensure you get the proper assistance for your truck's repairs, please fill out the form at https://s.chevy.com/support-request with all pertinent details including your username.
    • GMCustomerService
      2026 Z71 Forward and Rear Park Assist help

      By GMCustomerService · Posted

      We appreciate you sharing your experience with your truck. To ensure we get you the proper assistance, please fill out the form at https://s.chevy.com/support-request with all pertinent details including your username.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...