2024 GMC Sierra 2500HD Diesel Consumer Reviews
Pricing
Denali Ultimate (Most Popular) - $94,895 MSRP
Edmunds suggests you pay
$86,943Prices based on sales in TX thru 6/9/25
Final assembly in USA
2024 GMC Denali Ultimate
Justin Mullinax, 09/03/2023
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD LB (6.6L 8cyl Turbodiesel 10A)
10 of 11 people found this review helpful
I purchased and still have a 2024 GMC Denali Ultimate that I have had nothing but issues with since the second week of purchasing new. The truck left me and my family stranded in Walsenburg Colorado with only 1,253 miles on it. We called On Star to have a wrecker take it to the dealer. On Star wouldn’t send a wrecker because we had a 22’ utility trailer so we where out a wrecker bill. I called Ferguson GMC where I purchased the vehicle from and left multiple messages for my salesman and the GM to see what my options were. I never received a call or text from either. One week after the day it broke down I did get a call back from the service manager MIKE GENOVESE . Mike informed me there was nothing they could do since it was already at another dealership. The truck was taken to Wilcoxson GMC in Pueblo Colorado where it sat for 6 weeks getting a new DPF filter and Pressure Differential Sensor. GM has still been unwilling to compensate for the 6 weeks of being with our primary vehicle used for work. We literally had to purchase another New GMC from Wilcoxson to get home as there where no loaner vehicles available. When our 2024 GMC showed up at our house through GM reunite program it had 680 miles more than when it was delivered to the dealership and there was no diesel or def fluid in the truck. We finally got a reimbursement check for the hotel room we had to get for 2 nights waiting for the dealership to open. I wouldn’t recommend buying anything from General Motors as they don’t stand behind anything. I have spent over 40 hours trying to get a fair compensation or Buy Back from GM and have yet to get anywhere with them. I was told they would Repurchase it and was told to get in contact with MIKE GENOVESE the service manager at Ferguson GMC in Norman Oklahoma. I called Mike to schedule a time to bring it in for the Buy Back and he didn’t know anything about it. So I called Shaun Gusumano back and he assured me Mike was brought up to speed and would be handling it. Once again I called Mike and still isn’t aware. If you are having any issues with getting ahold of GM please let Shaun know as he is not taking care of my issues. [contact info removed]
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disappointed
Bill in KY, 01/20/2024
updated 01/22/2025
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD LB (6.6L 8cyl Turbodiesel 10A)
3 of 3 people found this review helpful
Totally disappointed with the truck, has been back to the dealer 3 times in the 6 months that I have had it. Don't spend the money isn't worth it, bad fuel mileage, GPS and Satellite radio lose signal all the time, the transmission doesn't shift correctly. Had my previous Denali for 8 years no problems, the new one is disappointing! They have corrected most of the issues, but still have on and off problems, for an Ultimate Denali it is a disappointment!
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2024 GMC 2500 Denali Ultimate in my opinion AVOID
AngryDenaliOwner, Bartlett IL, 03/13/2024
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
2 of 2 people found this review helpful
In my opinion, I would steer clear of this truck. I purchased a 2024 GMC 2500 Denali Ultimate in April 2023, and it's been nothing but trouble since. The truck has spent over 90 days in the shop, yet they still haven't managed to resolve all the issues. One major problem is that it consistently fails to start after being parked in the driveway for more than nine days—regardless of the weather conditions. For instance, it died on a 30-degree day after just three days of sitting idle, and within nine days when temperatures were above 40 degrees. On top of that, there are numerous electrical glitches. Even the supposedly fantastic feature of the kicker radio is problematic—it remains connected to your phone when the truck is turned off, and the only way to shut it down is by disconnecting Bluetooth from the truck. Furthermore, the traction control is highly unreliable, and the trailer brake control loses functionality while towing, making it incredibly dangerous. What's the point of boasting about towing capacity when the vehicle becomes a rolling deathtrap with no brakes? #buyford #GMC #AngryDenaliOwner
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Yes, it works as my daily driver!
B. Wilson, 07/23/2024
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
2 of 2 people found this review helpful
Purchased due to obtaining a travel trailer and needed payload which 1/2 ton could not provide. Went back and forth regarding diesel or gas. Ultimately, my son advised the obvious that I should get the right tool for the task and not try to cheap out and “try to make something work”. I came from decades of small cars including a 911 and feared the truck couldn’t be used as a daily driver - properly equipped, it works as dairy driver. One must get the package with cameras which show exactly where this beast begins and ends; with the cameras, it is maneuverable in all parking lots - without the cameras, it is not viable. I use them every time. As a tow vehicle, it cannot be beaten. Retractable towing mirrors, tow mode, exhaust brake, brake controller, tire pressure sensors for your trailer, too! You can see everywhere when towing and lane changes are effortless with camera view integrated into turn signals showing if someone is occupying the space you wish to enter. As a truck, it is comfortable enough for me to use as DD. Diesel fuel discount cards make it much cheaper than premium gas. I have owned over 50 vehicles and this is my wisest purchase, yet. Lots of room to spread out in all directions. We have no issues with our ventilated Denali seats - over 7,000 miles in nearly 3 months. There are different leathers and seating surfaces, depending upon the trim level.
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Great truck
Tom, 11/19/2023
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
1 of 1 people found this review helpful
A few tech issues with nav been able to clear myself the rest of the truck had been great
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2024 2500 Denali
Love our GMs , 07/16/2024
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
1 of 1 people found this review helpful
Beautiful truck( burgundy color). However the most uncomfortable truck to drive. It had a spot on the floor board to the left and it’s so uncomfortable to put your foot there. The pedals are uncomfortable as well. My leg actually cramps. Our son 21 year old som took it on a trip a few states away to get another vehicle and he came home & said he wouldn’t drive it again. The seats were uncomfortable too. The cup holders which there are plenty thankfully we use them all but the arrangement isn’t great. They should be side by side instead of in front of one another. Again our truck is gorgeous but no one wants to drive it. We have an 18 High Country which is comfortable to drive. We actually just went and bought this without driving because we loved the look but had no idea the driving part would be so uncomfortable. Plenty of leg room in front & back seats. The mirrors we still haven’t got adjusted correctly. I do love the cruise control option that goes along with Traffic so we don’t rear end anyone. Really of they fixed the pedals & the foot ramp on the left it would help tremendously. It’s needs some of the old style comfort for driving. Love the heated back seat. Everything else I like.
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Love the 2024 Ultimate
Eric Ultimate, 09/17/2024
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
1 of 1 people found this review helpful
7K on my truck with no issues at all. I sank it in the MUD and had to get it out. The Tow Truck Drivers (2 trucks) said the frame was the strongest they’ve ever seen. The truck has the best stance and it can do anything I want it to. The seats are not as comfortable as my old King Ranch but I have found a happy place. Love the truck, would consider GMC from now on
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Denali Ultimate
Gs Denali Ultimate, 07/31/2024
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
0 of 0 people found this review helpful
Great truck and Dealer experience.
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F250 addresses these issues.
Nick, 04/17/2025
2024 GMC Sierra 2500HD Denali Ultimate 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A)
0 of 0 people found this review helpful
Next time, I will be more thorough before purchasing but when coming from a Lariat F250 to a Denali, I expected most of these things to be a given. 2024 Denali 2500 Lessons Learned: 1. Motor has a constant tick 2. Steel body shows rust when paint chips 3. Infotainment system is not user friendly 4. Infotainment system is partially blocked by gear shifter 5. Can’t use tailgate step with trailer ball 6. Fog lights do not add additional light 7. Fog lights do not stay on automatically after they are turned on 8. Automatic step LEDs look cheesy compared to rest of truck lighting 9. Dead spot in the gas when taking off 10. Valve body is a known issue with no repair in sight 11. Wheels have plastic trim on the face of the wheel and feel cheap 12. Frame coating peels off with hand to exposed metal 13. Cup holders do not hold large drinks 14. Does not include sunglass holder 15. Small center console storage 16. Leveling kits are hard to find without sacrificing ride quality 17. Speakers do not put out great sound for a Denali 18. No keypad to get inside without keys 19. Steering box hisses when turning 20. Push button on door handle requires two pushes in most cases to work 21. Trailer lights stay on all the time when connected to truck 22. No physical camera buttons. Must go through the infotainment system 23. Carpet wheel well covers warp after driving through rain and do not straighten out 24. Back seat AC does not put out enough to keep kids from physically sweating 25. Passenger mirror is at different angle from driver the driver side mirror 26. Truck downshifts too fast when coming to a stop 27. The seats are hard and uncomfortable on long rides
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