5.3L Engine and Transmission Pullout – Complete 2004 GMC L59 2WD Drivetrain
If you are looking to revitalize a classic vehicle or complete a budget-friendly LS swap, acquiring a complete 5.3L engine and transmission pullout is the most cost-effective path to modern performance. This particular powertrain package was carefully extracted from a well-maintained 2004 GMC Yukon XL. Featuring the robust L59 iron-block V8 engine and the smooth-shifting 4L60E two-wheel-drive automatic transmission, this 5.3L engine and transmission pullout delivers legendary small-block reliability. By opting for a comprehensive pullout assembly rather than sourcing individual conversion components, you ensure total system compatibility from day one in the garage.https://perlicanparts.org/auto-parts-store-about/
2004 Yukon XL – 5.3L L59 Engine & 4L60 2WD Automatic Transmission Pullout
Upgrade your vehicle with this reliable engine and transmission package, pulled directly from a 2004 Yukon XL. Perfect for street or classic Chevy/GMC swaps, this complete unit comes ready to install and get you back on the road quickly.
Features:
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Engine: Complete 5.3L Iron Block LM7 (L59)
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Transmission: 4L60 2WD Automatic
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Accessories Included: Alternator, A/C Compressor, Power Steering Pump
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Electronics: Engine Wiring Harness, Computer, Tach Module, Gas Pedal
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Mileage: 184,483 exact miles
This engine pullout is a turn-key solution, providing everything needed for a smooth swap or replacement. Tested and ready for installation, it’s ideal for anyone looking for a dependable, well-maintained 5.3L engine package
Technical Specifications of the L59 Gen III Powertrain
When planning a project around a 5.3L engine and transmission pullout, precise mechanical data is critical for a smooth engineering process. The L59 engine utilized in this 2004 model is highly sought after because it is the specialized Flex-Fuel variant of the famous LM7 engine architecture.
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Engine Block Construction: Deep-skirt cast iron block with aluminum cylinder heads
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Fuel Delivery: Return-style fuel system equipped with upgraded 33 lb/hr factory injectors (Flex-Fuel rated)
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Transmission Type: 4L60E 4-speed electronic automatic transmission (2WD configuration)
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Donor Mileage: 184,483 exact, verified miles
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Throttle Control: Drive-by-Wire (DBW) electronic throttle actuation
For a deep dive into the historical engineering, firing orders, and torque sequences of these Gen III small-blocks, you can consult the extensive technical databases on LSX Magazine and Tech Resources.
What is Included in This Turn-Key Swap Package?
This 5.3L engine and transmission pullout is specifically configured as a “turn-key” solution, meaning it retains the crucial support electronics that secondary market buyers often struggle to find.
Electronics & Fuel Management
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Complete, uncut factory engine wiring harness.
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Original, matching engine control computer (PCM) programmed for the 4L60E.
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Factory electronic gas pedal and its corresponding TAC (Throttle Actuator Control) module.
Mechanical Accessories & Internals
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Complete intake manifold, mechanical fuel rails, and fuel injectors.
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All front belt-driven accessories: high-output alternator, A/C compressor, and power steering pump.
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Structural core components from the factory valve covers down to the oil pan, including the water pump and timing cover.
Why the L59 Architecture is Ideal for Retrofit Swaps
Custom truck builders and restomod shops frequently search out a 5.3L engine and transmission pullout because the Gen III iron-block platform responds exceptionally well to performance modifications. The L59 variant shares the exact same high-flow cylinder head casting as the standard LM7 but features upgraded, chemical-resistant fuel system components. This makes this 5.3L engine and transmission pullout inherently ready to handle alternative fuels or aggressive aftermarket fuel pumps if you decide to install a mild camshaft upgrade or a forced-induction system down the road.
Furthermore, the paired 4L60E transmission provides an overdrive fourth gear, allowing your swapped classic cruiser or trail rig to maintain comfortable, low-RPM highway cruising speeds without sacrificing off-the-line acceleration.
Freight Shipping and Fitment Information
This universal 5.3L engine and transmission pullout is an ideal candidate for retrofitting into 1967–1987 Chevy C10 trucks, squarebody Suburbans, G-body muscle cars, or as a direct replacement unit for 1999–2006 GM full-size trucks and SUVs.
We ship this complete drivetrain assembly securely strapped to an oversized wooden pallet via commercial freight networks. The engine and transmission fluids are drained prior to departure to comply with transport regulations, and the electrical harness connections are wrapped in protective heavy-duty film. To find additional components to complete your build, check out our comprehensive LS Engine Swap Parts Collection or browse our inventory of Complete Truck Transmissions to view alternative 4WD options.
Frequently Asked Questions (FAQs)
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Can this 2WD transmission be converted to 4WD? Yes, but it requires completely disassembling the transmission to swap out the output shaft and tailhousing for a transfer case adapter.
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Is the PCM unlocked? The computer is currently in its factory stock configuration. For custom vehicle retrofits, you will need to have the VATS (Vehicle Anti-Theft System) bypassed via an aftermarket programmer.
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Was this package tested prior to removal? Yes. This assembly was run, compression tested across all eight cylinders, and shifted through gears to verify absolute operational integrity before being unbolted.
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Where can I buy a reliable 5.3L engine and transmission pullout? Our comprehensively documented, complete donor packages provide builders with a transparent, stress-free swap foundation.
Disclaimer: This used automotive powertrain assembly is sold intended for laboratory or customized automotive build environments. Professional mechanical installation and custom tuning are highly advised to maximize service life and safety.
