How much horsepower does the 2025 Duramax have?
The 2025 Duramax delivers 305 horsepower. It’s the official figure for GM’s 3.0-liter turbo-diesel inline-six used in the Silverado 1500 and Sierra 1500, paired with a 10-speed automatic to balance highway efficiency with towing capability.
What is the 2025 Duramax?
The 2025 Duramax refers to GM’s 3.0-liter turbo-diesel inline-six, the Duramax family’s light-duty workhorse for GM’s pickups. Introduced in recent years and refined for the 2025 model year, it remains the diesel option chosen by buyers who want strong low-end torque and improved highway fuel economy compared with gasoline rivals. For 2025, the official rating sits at 305 horsepower and 495 lb-ft of torque in Silverado 1500 and Sierra 1500 configurations that use this engine.
Horsepower at a glance
Below are the core power figures that define the 2025 Duramax-powered pickups.
- Horsepower: 305 hp
- Torque: 495 lb-ft
- Notes: Peak horsepower occurs in the upper end of the RPM range, while torque is available down low for confident mid-range acceleration and towing.
With 305 horsepower and 495 lb-ft of torque, the Duramax is designed to deliver strong pulling power while maintaining highway efficiency across typical daily driving and trailer-towing scenarios.
Performance in real-world use
Power figures aside, many buyers consider how that output translates to everyday performance. The Duramax’s torque-rich profile helps with quick accelerations when merging or passing, and it shines when towing or hauling, where low-end torque helps maintain momentum without excessive throttle input. The engine is typically paired with GM’s 10-speed automatic transmission, which helps keep the engine in its efficient torque band during both highway cruising and when pulling heavier loads.
Diesel advantages in the field
Diesel powertrains deliver their peak torque at low RPM, providing robust start-up torque for towing, steady acceleration under load, and strong engine braking on downhill grades. These characteristics help the Duramax feel more capable in work-related tasks compared with many gasoline-powered rivals.
Summary
The 2025 Duramax provides 305 horsepower and 495 lb-ft of torque in GM’s light-duty pickups, reinforcing its reputation for diesel torque and highway efficiency. Paired with a 10-speed automatic transmission and towing tech, this setup remains a competitive option for buyers prioritizing towing capability and steady highway performance in the Silverado 1500 and Sierra 1500 lineup.
How much horsepower does a 2025 2500HD have?
401-horsepower
Under the hood of the 2025 Chevy Silverado 2500 HD sits a powerful V8 engine that delivers commanding strength. Choose between a robust 401-horsepower 6.6L gas V8 or a high-torque 6.6L Duramax® turbo diesel V8 engine capable of 975 pound-feet of torque.
What is the new Duramax engine in 2025?
With the addition of the 3.0L Duramax turbo-diesel engine, the 2025 Silverado 1500 brings an excellent mix of power and fuel efficiency. Key Features: 3.0L Duramax Turbo-Diesel Engine: 277 horsepower and 460 lb-ft of torque.
How much horsepower does a 2025 6.6 Duramax have?
The 2025 6.6L Duramax turbo-diesel has 470 horsepower and 975 lb-ft of torque. This engine is available in heavy-duty trucks like the 2025 Chevrolet Silverado HD and is paired with a 10-speed Allison automatic transmission.
You can watch this video to learn more about the 2025 Duramax Silverado's performance: 1mThe Fast Lane TruckYouTube · Jan 30, 2025
- Horsepower: 470470470 hp
- Torque: 975975975 lb-ft
- Transmission: 10-speed Allison automatic
- Peak Torque: 90%90 %90% of peak torque is produced from 1,5501 comma 5501,550 to 2,8502 comma 8502,850 rpm for strong performance when towing.
- Towing Capacity: The diesel engine provides a max available trailering weight of up to 36,00036 comma 00036,000 lbs.
Is the 2025 3.0 Duramax a good engine?
No, the 2025 3.0 Duramax engine is not considered a good engine at this time due to a widespread issue with thrust bearing failure, which can lead to catastrophic engine failure. This problem is causing engines to fail prematurely, and dealerships are issuing Technical Service Bulletins to address it, though a recall has not been issued. While the engine is known for good fuel economy and torque in general, potential buyers should wait for GM to resolve this significant reliability issue.
Potential issues with the 2025 3.0 Duramax
- Thrust bearing failure: The most critical problem is the thrust bearing, which allows the crankshaft to move excessively, damaging internal components and causing total engine failure.
- Crankshaft end play: Dealers are instructed to check the crankshaft end play as a potential indicator of thrust bearing failure. If it's out of specification, it points to a significant problem that can lead to engine damage.
- Other potential issues:
- Oil leaks (rear main seal, oil pan)
- Concerns about the oil pump belt, which is located at the rear of the engine and is very labor-intensive to replace
- Engine oil consumption
- Timing chain stretching, which also requires a very labor-intensive replacement
Before buying
- Wait for a fix: It is advisable to wait until GM addresses and resolves the thrust bearing failure issue before considering a 2025 or 2026 model with this engine.
- Stay informed: Keep up with developing news and information on this issue, as it is still considered a developing problem.
