2004 Chevy Tahoe 5.3L L59 Engine – Complete 112K-Mile Standalone V8 Pullout
If you are on the hunt for a reliable, low-mileage small-block to complete an LS swap or restore a full-size truck, choosing a genuine 2004 Chevy Tahoe 5.3L L59 engine package provides an outstanding balance of longevity, power, and modern fuel versatility. Carefully extracted from an operational, exceptionally clean 2004 Chevrolet Tahoe with just 112,000 original miles, this iron-block powertrain is verified to run smoothly and hold excellent oil pressure. By opting for a complete standalone 2004 Chevy Tahoe 5.3L L59 engine kit, you receive the engine alongside its fundamental electronic support architecture, drastically reducing the time and money spent trying to source missing modules and matching harnesses down the road.https://perlicanparts.org/auto-parts-store-about/
This 5.3L L59 V8 engine was pulled from a 2004 Chevrolet Tahoe with only 112,000 miles. The engine ran smoothly prior to removal and is an excellent option for a direct replacement or LS swap project.
Details:
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Engine: 5.3L L59 (Flex Fuel Variant of LM7)
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Mileage: 112,000 miles
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Condition: Tested and ran smooth prior to removal
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Configuration: Complete long block (intake to oil pan)
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Fuel Type: Gasoline / Flex Fuel
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Engine Wiring Harness
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Computer (ECU)
This engine is perfect for anyone looking to restore or upgrade a GM truck or SUV with a reliable, low-mileage 5.3L powerplant.
Technical Breakdown of the L59 Flex-Fuel Platform
When managing a project build around a 2004 Chevy Tahoe 5.3L L59 engine, having precise mechanical specifications is essential for setting up fuel plumbing, engine mounts, and cooling networks.
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Engine Core Architecture: Deep-skirt cast iron block with high-flow aluminum cylinder heads (Gen III LS Family)
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Fuel Delivery Engineering: Flex-Fuel compatibility equipped with factory 33 lb/hr high-capacity fuel injectors
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Odometer Mileage Verification: 112,000 exact, certified original miles
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Throttle Control Configuration: Drive-by-Wire (DBW) electronic throttle system
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Factory Power Metrics: 295 Horsepower and 335 lb-ft of Torque
For deep-dive mechanical specifications, internal component sizing charts, and step-by-step assembly torques for General Motors Gen III small-blocks, you can consult the extensive public documentation hosted on LSX Magazine and Tech Resources.
What is Included in This Turn-Key Standalone Package?
This 2004 Chevy Tahoe 5.3L L59 engine pullout is supplied as a complete long-block assembly, retaining the core wiring connections that salvage yards typically damage during rushed vehicle teardowns.
Electronics & Engine Management Components
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Uncut, factory-original engine wiring harness cleanly labeled at major sensor junctions.
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Original matching Engine Control Unit (ECU/PCM) flashed with factory 2004 Tahoe parameters.
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Vital engine bay sensors, including the mass airflow (MAF) housing and manifold absolute pressure (MAP) link.
Mechanical Long Block Assemblies
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Structural long block from the factory composite intake manifold down to the steel truck oil pan.
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Factory valve covers, aluminum coil pack brackets, and original electronic throttle body.
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Core engine timing cover, water pump housing, and exhaust manifold links.
Why the L59 Small-Block is Ideal for Custom Engine Swaps
Hot rod builders and truck enthusiasts frequently go out of their way to find a 2004 Chevy Tahoe 5.3L L59 engine over standard LM7 options because it represents a factory-upgraded fuel configuration. Because the L59 was designed to handle highly corrosive E85 ethanol mixtures, GM equipped it with heavy-duty, chemical-resistant fuel injectors and more robust internal fuel rail valving. This means that a 2004 Chevy Tahoe 5.3L L59 engine is uniquely prepared to withstand higher fuel delivery volumes if you decide to install aftermarket performance fuel pumps or high-boost forced induction upgrades in the future.
Furthermore, the 5.3L iron block offers immense rigidity and strength. It features the exact same external dimensions as the all-aluminum LS1 and LS6 engines, making it universally adaptable to a massive assortment of aftermarket engine mounts designed for squarebody C10 trucks, classic muscle cars, or rugged off-road trail rigs.
Freight Shipping Logistics and Universal Application Fitment
This 2004 Chevy Tahoe 5.3L L59 engine is a direct drop-in replacement for 2003–2006 Chevrolet Silverado, Tahoe, Suburban, Avalanche, and GMC Sierra or Yukon platforms. It also makes for an incredibly straightforward swap candidate into custom restomod platforms using a streamlined standalone standalone chassis loom.
We ship this complete engine pullout securely strapped to an industrial wooden pallet through established commercial freight networks. All motor oils and cooling fluids are completely drained prior to shipment to follow strict transport guidelines, and all exposed intake ports are wrapped in heavy-duty protective film. To browse complementary hardware or performance conversion accessories, make sure to visit our General LS Engine Swaps Collection or explore our catalog of Tested Automatic Transmissions to match this engine to a 4L60E or 4L80E gearbox.
Frequently Asked Questions (FAQs)
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Do I have to run E85 fuel in this engine? Not at all. The L59 engine control computer uses integrated oxygen sensor logic to automatically adjust fuel trims, letting you run standard 87 octane pump gas, premium fuel, or E85 seamlessly.
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Is the computer unlocked? The included ECU is in its stock factory configuration. For custom vehicle retrofits, you will need to have a tuner bypass the integrated VATS (Vehicle Anti-Theft System) security protocol.
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Was this engine tested for lifter ticks or smoke? Yes. This 112k-mile unit underwent rigorous compression testing across all eight cylinders, showing uniform pressure metrics, clean exhaust operation, and a quiet valvetrain prior to extraction.
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Where can I buy a reliable 2004 Chevy Tahoe 5.3L L59 engine online? Our fully verified, low-mileage powertrain pullouts provide engine builders with an honest, completely documented mechanical foundation.
Disclaimer: This used automotive powertrain component is sold explicitly intended for professional vehicle replacement or laboratory-style custom swap builds. Professional installation and fresh fluid fills are highly recommended to ensure maximum on-road safety and component service life.
