GMC Yukon XL trim comparison
2024 GMC Yukon XL SLT vs Denali Ultimate
The Yukon XL SLT starts at $67,900 while the Denali Ultimate is $101,755. That $33,855 gap buys 7 meaningful differences.
This is a powertrain and drivetrain change. The Denali Ultimate gets the 6.2L V8 and 4WD, so the $33,855 is buying a different driving experience, not just nicer trim.
Choose the SLT if the 5.3L V8 with RWD already covers the way you drive. Move to the Denali Ultimate only when the 6.2L V8 and 4WD combo is the reason you are shopping higher, because that is the real hardware split here.
Think about this as a monthly tradeoff, not just a sticker gap. The Denali Ultimate adds about $596/month on a typical 60-month loan, or around $35,760 more overall with interest. The payment only makes sense if that different powertrain matters to the way you actually drive, tow, or live with the vehicle.
Lock one trim, change the other side, and move through exact pair pages without resetting back to the full lineup every time.
Who notices the difference
The higher trim starts to make more sense when you are specifically shopping for the stronger powertrain, not just more trim content.
When both feel the same
Both the SLT and Denali Ultimate share the same 10-speed shiftable automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $33,855 for 6 measurable differences, which works out to about $5,642 per change.
Key Differences at a Glance
This is the fast read: price, power, efficiency, and the feature flips most likely to change the answer.
Every Difference, Side by Side
This is the full read behind the quick decision signals above: the complete hardware, comfort, and equipment story. 7 specification differences, 0 shared.
Full Specification Comparison
Specifications reflect available data as of early 2024. Confirm details with an authorized dealer before purchasing.
| Spec | SLT | Denali Ultimate |
|---|---|---|
| Pricing | ||
| MSRP | $67,900 | $101,755 |
| Powertrain | ||
| Engine | 5.3L V8 | 6.2L V8 |
| Horsepower | 355 hp | 420 hp |
| Torque | 383 lb-ft | 460 lb-ft |
| Transmission | 10-speed shiftable automatic | 10-speed shiftable automatic |
| Drivetrain | RWD | 4WD |
| Fuel Economy | ||
| City MPG | 15 | 14 |
| Highway MPG | 20 | 18 |
| Combined MPG | 17 | 16 |
| Fuel Tank | 28.0 gal | 28.0 gal |
| Dimensions | ||
| Curb Weight | 5,633 lbs | 5,998 lbs |
| Wheelbase | 134.0" | 134.0" |
| Length | 225.2" | 225.2" |
| Width | 81.0" | 81.0" |
| Height | 76.5" | 76.5" |
| Safety | ||
| NHTSA Overall | 4/5 stars | 4/5 stars |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 6yr/100k | 6yr/100k |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2024 GMC Yukon XL SLT vs Denali Ultimate Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the GMC Yukon XL lineup, the GMC brand hub, the Full-Size SUVs, the how to pick a trim guide, or our mid-trim value research when you need the bigger shopping path behind this one matchup.
How much more does the 2024 Yukon XL Denali Ultimate cost than the SLT?
The Denali Ultimate starts at $101,755 compared to $67,900 for the SLT. That is a $33,855 difference, or approximately $596/month more on a 60-month loan.
Do the 2024 GMC Yukon XL SLT and Denali Ultimate have the same engine?
No. The SLT uses a 5.3L V8 (355 hp, 383 lb-ft), while the Denali Ultimate has the 6.2L V8 (420 hp, 460 lb-ft). That is 65 more horsepower. Both pair with the same 10-speed shiftable automatic.
Does the 2024 Yukon XL SLT come with 4WD?
No. The SLT comes standard with RWD while the Denali Ultimate has 4WD. This affects traction, fuel economy, and curb weight.
Is the 2024 Yukon XL SLT or Denali Ultimate safer?
Both share the same GMC Yukon XL platform with an overall 4-star NHTSA safety rating. Safety ratings are model-level and identical across trims. The trim choice affects comfort and features, not crash protection.
What warranty does the 2024 GMC Yukon XL come with?
All 2024 GMC Yukon XL trims, including both the SLT and Denali Ultimate, come with GMC's standard warranty: 3yr/36k bumper-to-bumper and 5yr/60k powertrain coverage. Warranty does not vary by trim level.
Is the 2024 GMC Yukon XL Denali Ultimate worth $33,855 more than the SLT?
The Denali Ultimate changes both the engine and drivetrain for $33,855 more. That is a hardware upgrade, not just a feature bump.
Which 2024 GMC Yukon XL trim gets better fuel economy, the SLT or the Denali Ultimate?
The SLT is the more efficient of the two at 17 combined MPG, versus 16 for the other trim. That matters most if you are balancing running costs against the extra power, drivetrain, or comfort equipment tied to the pricier trim.
The Full Story Behind This Price Gap
Use the direct answer above for this exact matchup, then use these guides to understand whether you are really looking at a feature step-up, a package shuffle, or the point where the lineup starts changing in a meaningful way.
Breaking Down the $33,855 Gap
The Yukon XL Denali Ultimate costs $33,855 more than the SLT. Whether that is worth it depends on how much you value the 6.2L V8 engine (+65 hp) and 4WD. Power and comfort matter differently to different buyers. Weigh them against your priorities.
How the SLT and Denali Ultimate Feel Different
Moving from the SLT to the Denali Ultimate means a different engine entirely. That means 65 more horsepower and 77 more lb-ft of torque. That extra power shows up most clearly once you are out of town and asking more of the drivetrain. The cost of that extra capability is roughly 1 fewer combined MPG. The Denali Ultimate includes 4WD, which adds confidence in rain, snow, and light off-road conditions. It also increases curb weight and slightly reduces fuel economy.
Fuel Economy Comparison
The Yukon XL SLT gets 1 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $154 per year or $770 over five years of ownership.
The Short Version
$33,855 more for the Yukon XL Denali Ultimate gets you 6 real differences. At $596/month more, the question is whether those specific changes are things you will use regularly.
Trim-Matched Accessories
These add-ons are split by trim intent so the recommendations follow the actual use case, not just the same repeated product block.
GMC Yukon XL SLT
Value-trim add-onsThese picks fit the SLT best when the goal is covering the daily-use gaps without paying up to the next trim.
GMC Yukon XL Denali Ultimate
Step-up trim add-onsThese picks suit the Denali Ultimate when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
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Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2024 model year. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with GMC or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.