2025 GMC Sierra 1500 Denali: Specs, Features & Canadian Pricing

The 2025 GMC Sierra 1500 Denali takes a comfort-focused approach to the full-size pickup. Its equipment sits above the simpler Sierra configurations without requiring a move to Denali Ultimate. The important shopping question is which features are included in Denali and which still depend on its engine and option packages.

Watch our 2025 GMC Sierra 1500 Denali video below.

Models available

SLT, AT4 and Denali Ultimate are useful comparison points, but they are not interchangeable configurations. SLT can offer a less expensive starting point; AT4 emphasizes off-road equipment; Ultimate adds more premium content. Match cab, box, engine and drivetrain before treating a trim-price difference as the cost of a single upgrade.

Engine and transmission

The Canadian 2025 Denali listing identifies the 5.3-litre V8 as standard, with the 6.2-litre V8 and 3.0-litre Duramax turbo-diesel available. All three use a ten-speed automatic. Canadian 2025 engine guide.

Engine	Manufacturer-rated output	Denali availability
5.3L EcoTec3 V8	355 hp / 383 lb-ft	Standard
6.2L EcoTec3 V8	420 hp / 460 lb-ft	Available
3.0L Duramax turbo-diesel	305 hp / 495 lb-ft	Available

Output figures are corroborated by the 2025 GM Canadian Fleet Guide. Do not infer the fitted engine from a Denali badge or borrow the standard engine specification from Denali Ultimate.

Towing and payload

Denali’s Canadian catalogue lists an integrated trailer brake controller and trailering equipment. The exact towing and payload limits still depend on the configuration and load. Check the truck’s labels and manufacturer documentation before adding trailer tongue weight, passengers, accessories and cargo. Denali equipment reference.

A range-wide maximum is not automatically a Denali rating. If towing is central to the purchase, ask for the VIN-specific calculation and confirm the hitch, connector and brake-controller operation. A higher trim price does not necessarily mean more usable payload.

Fuel economy

NRCan’s 2025 Sierra 4WD entries distinguish the three engines below. These standardized ratings are grouped by engine and drivetrain rather than Denali trim. NRCan 2025 fuel-consumption data.

Sierra 4WD engine	City / highway / combined (L/100 km)	NRCan fuel category
5.3L V8, ten-speed	15.4 / 12.6 / 14.2	Regular gasoline
6.2L V8, ten-speed	16.0 / 12.1 / 14.3	Premium gasoline
3.0L diesel, ten-speed	10.6 / 9.0 / 9.9	Diesel

Compare annual fuel expense using your distance and local fuel prices, rather than litres alone. At 20,000 km, the combined ratings represent approximately 2,840 litres for the 5.3, 2,860 for the 6.2 and 1,980 for the diesel. These calculations are planning examples; towing, winter use and loading can change consumption.

Interior and practicality

Denali includes heated and ventilated front seats, heated rear outboard seats, a heated steering wheel and dual-zone climate control. Its premium suspension includes Adaptive Ride Control.

Infotainment and connectivity

The Canadian catalogue lists a 13.4-inch infotainment screen, 12.3-inch driver display, Bose audio, wireless phone projection and wireless charging. Google built-in capability does not establish that every connected service is included indefinitely. Check the plan and subscription terms for the individual truck.

Safety and driver assistance

HD Surround Vision and adaptive cruise are listed as standard Denali equipment; Super Cruise is optional. A sunroof, head-up display, Rear Camera Mirror and power steps also require checking the option list. Do not treat an extensively optioned Denali as the baseline for every example.

Ask for a demonstration of the installed systems and consult the manual for their operating conditions. Driver assistance does not eliminate the need to supervise the vehicle. Features that depend on connectivity may also require an active service plan.

Pricing in CAD

Current Canadian manufacturer pricing for these exact 2025 configurations has not been verified as of October 31, 2026. Vehicle prices and price differences are therefore omitted; the chart compares equipment, not current purchase costs.

2025 configuration	What changes
AT4 4WD, 3.0L diesel	Factory two-inch lift and skid plates; a different engine and off-road focus.
Denali 4WD, 5.3L V8	Comfort equipment, Adaptive Ride Control and Denali appearance.
Denali Ultimate 4WD, 3.0L diesel	Full-grain leather, standard head-up display, Rear Camera Mirror and Super Cruise in this catalogue configuration.

The configurations in the chart have different engines and equipment. Confirm the Canadian model year and complete factory specification when using a current manufacturer price; a later-year Sierra starting price is not a 2025 Denali quote.

The engines are not identical. In particular, the Ultimate row describes a diesel configuration, not the illustrated 6.2-litre truck. Match the engine, cab, box and optional equipment before comparing costs.

Choosing between trims

SLT is another equipment comparison: its Canadian catalogue lists heated front seating as standard, while ventilated fronts and heated rear outboard seats are optional. Compare a fully optioned SLT with Denali and match the drivetrain before judging equipment or cost.

AT4 is the alternative if the lift and underbody protection suit your needs. Denali Ultimate is the upgrade to examine if you want its additional premium equipment without building a regular Denali through several packages. Neither choice should be made from the badge alone; compare the full build sheets and total quotations.

Frequently asked questions

Does every Denali have the 6.2-litre V8?

No. The Canadian engine guide lists the 5.3-litre as standard and two other engines as available. Verify the actual truck.

Is Super Cruise included on every Denali?

No. It is listed as optional on regular Denali. Confirm installation and service requirements before paying for it.

Is this the same truck as Denali Ultimate?

No. Denali Ultimate is a separate trim with a different equipment package. Its specifications should not be copied into a regular Denali review.