GMC Sierra 1500 trim comparison
2024 GMC Sierra 1500 SLT vs Denali Ultimate
The Sierra 1500 SLT starts at $54,800 while the Denali Ultimate is $82,500. That $27,700 gap buys 7 meaningful differences.
This is a powertrain and drivetrain change. The Denali Ultimate gets the 6.2L V8 and 4WD, so the $27,700 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 $488/month on a typical 60-month loan, or around $29,280 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 tow, haul, or merge with enough load that the stronger powertrain matters.
When both feel the same
Both the SLT and Denali Ultimate share the same 10-speed shiftable automatic transmission and Crew Cab cabin and bed dimensions.
The upgrade math
You are paying $27,700 for 6 measurable differences, which works out to about $4,617 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 | $54,800 | $82,500 |
| 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 | 16 | 15 |
| Highway MPG | 21 | 19 |
| Combined MPG | 18 | 17 |
| Fuel Tank | 24.0 gal | 24.0 gal |
| Dimensions | ||
| Curb Weight | 4,890 lbs | 5,350 lbs |
| Wheelbase | 147.0" | 147.0" |
| Length | 231.9" | 231.9" |
| Width | 81.2" | 81.2" |
| Height | 75.5" | 75.5" |
| Truck Specs | ||
| Cab Type | Crew Cab | Crew Cab |
| Bed Length | 5.8 ft | 5.8 ft |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 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 Sierra 1500 SLT vs Denali Ultimate Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the GMC Sierra 1500 lineup, the GMC brand hub, the Full-Size Trucks, 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 Sierra 1500 Denali Ultimate cost than the SLT?
The Denali Ultimate starts at $82,500 compared to $54,800 for the SLT (both Crew Cab RWD). That is a $27,700 difference, or approximately $488/month more on a 60-month loan.
Do the 2024 GMC Sierra 1500 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 Sierra 1500 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 Sierra 1500 SLT or Denali Ultimate safer?
Both share the same GMC Sierra 1500 platform with an overall 5-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 Sierra 1500 come with?
All 2024 GMC Sierra 1500 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 Sierra 1500 Denali Ultimate worth $27,700 more than the SLT?
The Denali Ultimate changes both the engine and drivetrain for $27,700 more. That is a hardware upgrade, not just a feature bump.
Which 2024 GMC Sierra 1500 trim gets better fuel economy, the SLT or the Denali Ultimate?
The SLT is the more efficient of the two at 18 combined MPG, versus 17 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 $27,700 Gap
The Sierra 1500 Denali Ultimate costs $27,700 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
GMC gives the Denali Ultimate the 6.2L V8, a step up from the SLT's 5.3L V8. That means 65 more horsepower and 77 more lb-ft of torque. You will feel the difference towing, merging, and passing on the highway. The cost of that extra capability is roughly 1 fewer combined MPG. The Denali Ultimate adds 4WD, giving it better traction for towing in wet conditions, gravel roads, and winter driving. Expect slightly lower fuel economy and higher curb weight.
Fuel Economy Comparison
The Sierra 1500 SLT gets 1 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $138 per year or $690 over five years of ownership.
The Short Version
$27,700 more for the Sierra 1500 Denali Ultimate gets you 6 real differences. At $488/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 Sierra 1500 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 Sierra 1500 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.