GMC Sierra Denali
Built: 2007-2025 · Series: SIERRA
More machines from model year 2007
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
GMC Sierra – Heavy Duty pickup of the 2500 and 3500 class: six- and eight-cylinder engines from 110 to 332 kW, 3.0 to 7.4-litre displacement, up to 6,150 kg gross weight
GMC has run the Sierra since 1987 as a standalone pickup model, technically related to the Chevrolet Silverado, and since 1999 as a fully separate range within General Motors; the Sierra family is built at, among other plants, Fort Wayne (Indiana), Flint (Michigan) and Silao (Mexico). The 1500, 2500 and 3500 numbers order payload class, the HD (Heavy Duty) suffix denotes the reinforced three-quarter- and one-ton versions with leaf-sprung rear axles, and trim levels such as SLE, SLT, AT4 and Denali range from work-focused to luxury specification.
Read on 3 more paragraphs
The register lists 63 versions with 110 to 332 kW from six- and eight-cylinder engines of 2,990 to 7,441 cm³, unladen weights of 2,095 to 3,810 kg, gross vehicle weights of 3,500 to 6,150 kg and widths of 1,950 to 2,490 mm.
In the Heavy Duty class the Sierra competes chiefly with the Ford F-250/F-350 and Ram 2500/3500 on towing and payload capacity; typical uses are construction and agriculture, horse and boat transport, and commercial fleets, where the Duramax turbodiesel paired with the Allison automatic is valued as a tow vehicle.
When buying used, check the injection pump, turbocharger and exhaust aftertreatment (DEF) on Duramax diesels, cylinder deactivation and oil consumption on the petrol V8s, frame corrosion at the rear leaf-spring mounts generally, and wear on the hitch ball and trailer wiring on frequently used tow vehicles; parts run through the GMC and GM parts network.
Sources: SpecCodex register, model data: GMC Sierra, GMC
Technical data
Engine
| Power | 268 kWcorrect |
|---|---|
| Cylinders | 8correct |
| Displacement | 6,599 cm³correct |
Dimensions and weights
| Length | 6,780 mmcorrect |
|---|---|
| Width | 2,080 mmcorrect |
| Wheelbase | 4,050 mmcorrect |
| Unladen weight | 3,600 kgcorrect |
| Gross vehicle weight | 5,148 kgcorrect |
Drivetrain and chassis
| Wheels | 4correct |
|---|---|
| Top speed | 170 km/hcorrect |
Where this model stands
Power-to-weight ratio: 74.4 kW/t (268 kW / 3.6 t)
Stronger than 46% of the trucks in the register — out of 25,242 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the GMC Sierra Denali have?
The GMC Sierra Denali delivers 268 kW.
How much does the GMC Sierra Denali weigh?
The unladen weight is 3,600 kg.
What is the gross vehicle weight of the GMC Sierra Denali?
5,148 kg.
What engine does the GMC Sierra Denali have?
8 cylinders, 6,599 cm³ displacement.
What are the dimensions of the GMC Sierra Denali?
6,780 mm × 2,080 mm.
When was the GMC Sierra Denali built?
Production years: 2007-2025.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 13 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Other models in this series
SIERRA 1500 AT4X AEV-Edition W
SIERRA 1500 DENALI-W
SIERRA 1500 ELEVATION-W
SIERRA 2500 CREW PICK UP/3900
SIERRA 2500 HD 4x4 CREW CAB/3890
SIERRA 2500 HD 4x4 CREW CAB/4040
SIERRA 2500 HD Denali
SIERRA 2500 HD EXTENDED CAB-4X4
SIERRA 2500 K2500 Denali
SIERRA 2500 PICK UP-GK24J-4X4/3340
SIERRA 2500 PICKUP FK29S-4X4/359
SIERRA 2500 SLT
Sources: RDW — Dutch national vehicle register (retrieved August 2026) · How we check the data
Truck in 3D section
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