GMC HD3500 Duramax Diesel Engine Motor Transmission L5P 6.6L

( Manufacturer Part Number: HD3500 ), ( Type: Engine Long Block ), ( Engine Size: 6.6 L ), ( Fuel Type: Diesel )

Review GMC Hd L5p Duramax 6.6l Diesel Engine Motor Transmission fits SIERRA 2500 3500 AT4 2022

Introducing the powerful and robust GMC HD Sierra 2500 and 3500 AT4 models, fitted with the iconic Duramax 6.6L Diesel Engine and Allison 1000 Series Automatic Transmission. These heavy-duty trucks are meticulously engineered to cater to the most demanding jobsites and off-road adventures.

The Duramax 6.6L Diesel Engine sets the benchmark for power and efficiency in heavy-duty trucks. Boasting a best-in-class 445 horsepower and 910 lb-ft of torque, this engine ensures impressive towing and hauling capabilities. The engine's advanced design includes a variable geometry turbocharger and a selective catalytic reduction system, which enables it to meet stringent emissions standards without compromising performance.

The Allison 1000 Series Automatic Transmission perfectly complements the Duramax engine. This heavy-duty transmission offers a smooth and responsive shifting experience, ensuring optimal power delivery to the wheels. Its robust design and durability make it suitable for the most demanding towing and hauling applications.

The HD Sierra 2500 and 3500 AT4 models come equipped with a range of advanced features designed to enhance both performance and driver comfort. These include features like Auto Grade Braking, which helps maintain a constant speed when traveling up or down steep inclines, and Tow/Haul mode, which optimizes power delivery for towing applications.

Additionally, the AT4 trim level adds off-road capabilities with features such as off-road suspension, skid plates, and all-terrain tires. The interior of the AT4 boasts premium materials, advanced infotainment technology, and comfortable seating, ensuring a refined driving experience.

In summary, the GMC HD Sierra 2500 and 3500 AT4 models, with their Duramax 6.6L Diesel Engine and Allison 1000 Series Automatic Transmission, offer unmatched power, efficiency, and versatility for heavy-duty towing, hauling, and off-road adventures.

The GMC HD Sierra 2500 and 3500 with the 6.6L Duramax Diesel Engine and Allison 1000 Series Transmission offer several advantages and disadvantages for buyers, depending on their specific needs and preferences.

1. Power and Towing Capability: The Duramax Diesel Engine produces impressive torque of 910 lb-ft, making it an ideal choice for heavy-duty towing. The maximum towing capacity of the HD Sierra 2500 and 3500 can reach up to 18,500 lbs, making it one of the best options in its class for towing large loads.

2. Fuel Efficiency: Compared to its gasoline counterparts, the Duramax Diesel Engine offers better fuel efficiency. The engine is EPA-rated at 23 mpg highway, which is a significant improvement over the gasoline engines.

3. Durability: The Duramax Diesel Engine and Allison Transmission are known for their durability and reliability, which is essential for heavy-duty applications.

4. Smooth Ride: The Allison Transmission offers a smooth and refined driving experience, making it a preferred choice for those who value comfort and ease of use.

5. Advanced Technology: The HD Sierra 2500 and 3500 come with several advanced features, including the ProGrade Trailering System, which includes features like Trailer Length Indicator, Trailer Tire Pressure Monitoring, and Hitch Guidance.

1. Cost: The HD Sierra 2500 and 3500 with the Duramax Diesel Engine and Allison Transmission are more expensive than their gasoline counterparts and other heavy-duty trucks in the market.

2. Complexity: The Duramax Diesel Engine and Allison Transmission are more complex than gasoline engines and transmissions, which can result in higher maintenance costs and more time spent at the dealership for repairs.

3. Limited Availability: The HD Sierra 2500 and 3500 with the Duramax Diesel Engine and Allison Transmission are not available in all markets, making it a less convenient choice for some buyers.

The GMC HD Sierra 2500 and 3500 with the 6.6L Duramax Diesel Engine and Allison 1000 Series Transmission offer impressive power, towing capability, fuel efficiency, durability, smooth ride, and advanced technology. However, they also come with a higher cost, complexity, and limited availability.

If you require heavy-duty towing capabilities, value fuel efficiency, and prefer a smooth and refined driving experience, the GMC HD Sierra 2500 and 3500 with the Duramax Diesel Engine and Allison Transmission are excellent choices. However, if you have a limited budget, prefer a more straightforward engine and transmission, or require wider availability, you may want to consider other options in the market.

Details:

INCLUDES EVERYTHING SHOWN, L5P ENGINE, 10L1000 TRANSMISSION AND TRANSFER CASE. LISTING IS FOR A COMPLETE PULL OUT AS SHOWN IN THE PICTURES FROM WRECKED 2022 SIERRA 2500HD AT4. 2022 GMC SIERRA 2500HD AT4 DURAMAX CREW CAB STANDARD BED.

part #: hd3500 prices

• $76.99-$153.78

specifications grokengines:

• for models: 2500, 3500, At4, Sierra
• for makes: Gmc
• for years: 2022
• mpn: Hd3500
• type: Engine Long Block
• engine size: 6.6 L
• fuel type: Diesel

offer grokengines:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: November 25, 2025

payments grokengines:

• other
• cash
• credit card: Discover
• wallet: Paypal

seller grokengines:

• city: Nampa, Idaho
• rating: 99.9%
• # reviews: 33763

shipping grokengines:

• cost: $500.00
• type: Fixed
• class: Freight
• service: Flat Rate Freight

general grokengines:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engines

returns grokengines:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

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