- Truck-Yukon XL1500 6.0L Vin U 8Th Digit 2003, 2006, 2004, 2005
GMC Truck-Yukon XL1500 6.0L (VIN U, 8th digit) 6.0L Engine (2003-2006)
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- 1Enter or confirm your VIN
- 2We verify exact fitment for your vehicle
- 3Flat freight shown up front — no surprises
- 490-day warranty included on every part
- 5We photograph & confirm the unit before it ships
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About this part
"Restore Classic Power with 6.0L LQ4 Engine for Your 2003-2006 Yukon XL 1500"
Bring back the rugged performance of your GMC Yukon XL 1500 with our OEM-spec LQ4 6.0L V8 engine. This cast-iron workhorse delivers 300 HP and 360 lb-ft torque - the perfect direct replacement that maintains all factory specifications while offering proven durability.
Engine Specifications:
| Category | Details |
|---|---|
| Displacement | 6.0L V8 (364 ci) |
| Engine Code | LQ4 |
| Horsepower | 300 HP @ 4,400 RPM |
| Torque | 360 lb-ft @ 4,000 RPM |
| Fuel System | Sequential Fuel Injection |
| Valvetrain | OHV (Overhead Valve) |
| Block Material | Cast iron block, aluminium heads |
| Transmission | Compatible with 4L60E/4L65E automatic |
| Emissions | 50-state compliant |
Compatibility:
Fits: 2003-2006 GMC Yukon XL 1500 models with:
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8th VIN digit = "U" (confirms LQ4 engine)
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"6.0L" badging on rear quarter panels
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1500-series
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RPO code LQ4
Why Choose This Engine?
Proven Reliability: Million-mile capable design
Heavy-Duty Construction: Cast iron block stands up to abuse
Simple Technology: No AFM or VVT to fail
Complete Package: Includes all necessary components
Budget-Friendly: Most affordable 6.0L option
Pricing Options:
| Mileage Range | Price | Condition Highlights |
|---|---|---|
| 30K-60K miles | $4,100.00 | Low-mileage, excellent condition |
| 60K-90K miles | $3,630.00 | Strong runner, minor wear |
| 90K-120K miles | $3,264.00 | Good compression, needs seals |
| 120K-150K miles | $3,000.00 | Budget rebuild candidate |
Key Features:
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Vortec Cylinder Heads: High-flow aluminium castings
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Forged Steel Crank: Ultra-durable bottom end
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Simple Fuel System: No high-pressure pumps to fail
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OE-Spec Components: Exact factory replacement
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Complete Installation Kit: Includes all gaskets and seals
Shipping Information:
Dimensions: Length 42"× Width 34"× Height 36"
Weight: 475 lbs
Shipping Options:
Shipping: Shipped in the continental U.S.
Expedited Shipping: Faster delivery options can be arranged for an additional fee.
Frequently Asked Questions:
Q: Is there a warranty?
A: Yes! Every engine we sell includes a 60-day warranty, protecting you against manufacturing defects or performance problems.
Q: What if the engine doesn't fit my vehicle?
A: In the rare case that the engine isn’t compatible with your VIN, our 60-day return policy has you covered. Just reach out to us via phone or email, and we’ll help arrange the return.
Q: What's included with purchase?
A: Complete long block with intake, valve covers, oil pan, and all mounts.
Ready to Restore Your Yukon?
This 2003-2006 GMC Yukon XL 1500 6.0L LQ4 V8 Engine delivers the no-nonsense reliability your SUV deserves.
Tested, VIN-matched, and guaranteed
VIN-Verified Fit
We match the part to your vehicle's VIN and confirm exact fitment before we ship — so it fits the first time. Free cancellation within 24 hours.
Works on Arrival, Guaranteed
Every unit is tested before it ships. If it arrives defective, we replace it fast — and in the rare case we can't replace it, you get a full refund.
90-Day Warranty
A real parts-replacement warranty, included — with extended coverage available.
Heavy freight item, shipped fully insured and tracked. Freight is a flat $250 commercial / $400 residential, shown at checkout — no hidden fees, no freight-quote runaround.
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