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2010 GM Duramax 2500HD–3500HD Diesel Engine 6.6L

2010 Duramax 6.6L Diesel Engine

Used Engines Inventory

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LMM long block replacement for HD trucks

The 2012 Ford Powerstroke 6.7L Diesel Engine is a robust choice for heavy-duty applications, found in the 2012 Ford F250, F350, and F550 models. This turbocharged V8 engine delivers significant torque and horsepower, making it ideal for towing and hauling. Its design ensures both performance and efficiency, with a reputation for reliability and durability. Whether for work or recreation, the 6.7L Powerstroke handles demanding tasks with ease. For more details on its performance and specs, visit our 2012 F250 diesel engine page.

Diesel Engine

LMM long block replacement for HD trucks

The 2010 Duramax 6.6L engine is known for its dependable power, stable towing capability, and long-term GM diesel reliability for Silverado and Sierra HD platforms. Houston Engines offers both remanufactured engine builds and fully compression-tested used engine options that restore smooth performance. Blocks are magnaflux-inspected, deck surfaces are machined, and oil passages receive complete cleaning to prevent future failures. Cylinder heads undergo pressure testing and are refreshed with updated guides and seals. For fleets, commercial haulers, and long-distance operators, this LMM Duramax long block delivers strong combustion quality and responsive torque under heavy load.

Reman units receive full machining, including torque-plate honing, resurfaced decks, polished crankshafts, and a fully balanced rotating assembly.

Cylinder heads are rebuilt with updated valve components to improve airflow and sealing accuracy. All pistons, bearings, rings, gaskets, and seals are replaced to restore OE compression and consistent operation. These reman Duramax LMM engines undergo multiple verification steps to ensure clean idle, proper oil pressure, and reliable power delivery for towing, work fleets, and commercial use.

Compression-tested used Duramax engine options receive borescope inspection, leak-down testing, and cylinder balance verification. Updated gaskets and seals help prevent early failures, while injectors, pumps, and turbos are visually inspected for proper function. Only clean-running engines pass the approval process. Houston Engines ensures both used and reman engines meet the durability and reliability standards required for heavy-duty trucks and demanding diesel applications.

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Are you in the market for a used engine to get your vehicle back up and running? Look no further than Houston Engines. We offer a wide selection of high-quality, used engines at affordable prices. We pride ourselves on our commitment to customer satisfaction and provide a hassle-free shopping experience for all our clients.

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Engine Testing Procedures and Warranty Coverage

Each 2010 Duramax long block is compression-verified, oil-pressure tested, and inspected for sealing and cylinder balance. Hot-run data is documented when available and matched to the engine serial number for reference. These steps help ensure GM diesel reliability across all units.

Warranty options vary by build type. Reman units include extended LMM warranty coverage, while tested used engines feature limited warranty protection requiring proper installation documentation, fluid replacement, and adherence to service guidelines.

Break-in steps include priming the lubrication system, confirming coolant system cleanliness, and performing the initial oil change promptly.

Replace belts, hoses, and filters, and thoroughly inspect the turbocharger, EGR components, and intercooler for damage or contamination from prior engine failure. Ensuring a clean fuel system helps prevent injector issues, protects combustion quality, and supports long-term operation for any 6.6L Duramax installation.

Warm the engine gradually and monitor temperature and oil-pressure stability throughout the process. Begin with light-load cycles before moving to heavier towing demands. Following proper 6.6L break-in procedures ensures optimal ring seating, smooth power delivery, and preserved engine longevity—especially critical for LMM trucks used in high-mileage, fleet, or commercial environments where reliability and durability directly impact daily performance and operating costs.

Engine Fitment and Duramax Compatibility Guide

This engine fits 2010 Chevrolet Silverado 2500 HD engine and 3500HD models, as well as GMC Sierra 3500 diesel and 2500HD trucks using the 6.6L LMM Duramax platform. Always confirm VIN, emissions calibration, and module compatibility prior to ordering.

Houston Engines verifies casting alignment, oiling configuration, and accessory mounting patterns before shipment, helping ensure a seamless install and correct LMM setup.

For technical guidance, torque specs, freight scheduling, and warranty activation, contact Houston Engines. Our team provides installation support and helps confirm correct compatibility for your 2010 Duramax 6.6L engine, ensuring proper operation after installation. With expert assistance, you can complete the setup confidently and maintain long-term reliability for towing, commercial use, or everyday diesel performance.

Freight process and core return

All engines ship on secured pallets with reinforced banding, moisture barriers, and protective stabilizers to ensure safe transport. The Duramax freight process also includes lift-gate availability and dock delivery options across the U.S., helping reduce handling time and prevent shipping-related damage.

Cores must be fully drained and carefully loaded into the original crate using the supplied RMA and BOL paperwork. Proper strapping keeps the core stable during transit and helps ensure credit can be issued without delays or deductions.

Refunds are processed after the core is inspected. Missing parts, cracks, internal damage, or mismatched configurations may reduce credited value. Reviewing the full core return checklist beforehand helps guarantee maximum credit and a smooth return experience for every Duramax customer.

Frequently Asked Questions (FAQs)

Frequently Asked Questions (FAQ)

What trucks use the 2010 Duramax 6.6L engine?

It fits Silverado 2500HD/3500HD and Sierra 2500HD/3500HD LMM diesel trucks.

Is this engine a direct replacement for LMM models?

Yes, when VIN and emissions configuration match.

Are reman engines fully rebuilt?

Yes, remanufactured engine units include new pistons, bearings, gaskets, and fully machined heads.

How are used Duramax engines tested?

Used units undergo compression, leak-down, and borescope testing before approval.

Does this engine include warranty coverage?

Yes, reman units include extended warranty; used units include limited coverage.

What is required for warranty activation?

Proper installation documentation, fluid replacement, and checklist compliance.

What break-in steps should I follow?

Follow the recommended 6.6L break-in procedure with early oil changes and light-load warm-ups.

Can accessories be reused?

Yes, most factory accessories can transfer if in good working condition.

How does freight shipping work?

Engines ship using the Duramax freight process with secured pallets and national delivery options.

How do I order this 2010 Duramax 6.6L engine?

You can contact us at Houston Engines for pricing, availability, and compatibility support.

Why Buy From Us?

We strive to be the ultimate destination for recycled auto parts. With access to a vast inventory and exclusive parts network, we offer millions of quality parts. We specialize in used engines and transmissions with new stock weekly. Our commitment to quality means that you can trust that you're getting the best possible part for your vehicle.