GMC Truck-Yukon XL1500 6.0L (VIN U, 8th digit) 6.0L Engine (2003-2006)
VIN-VERIFIED UNIT
✓ Actual photos of the exact unit you'll receive — not a stock image
✓ Confirmed Fitment — fits these vehicles
  • Truck-Yukon XL1500 6.0L Vin U 8Th Digit 2003, 2006, 2004, 2005
Enter your VIN below and we’ll confirm the exact fit before we ship.
Engine · Tested

GMC Truck-Yukon XL1500 6.0L (VIN U, 8th digit) 6.0L Engine (2003-2006)

4.5 on Trustpilot · 335 reviews
Confirm it fits YOUR vehicleEnter your VIN — we verify exact fit before you pay
Find your VIN on the driver-side door jamb or lower windshield.
Unit Condition & Specs
AvailabilityIn stock — ready to ship
55% OFF $9,020.00
$4,100.00
Mileage
Learn more →
✓ Flat-rate freight — insured & tracked ·✓ 90-day warranty included· freight shown at checkout: $250 commercial / $400 residential
Ships within 3 - 5 business days Approx - flat-rate freight, tracked & insured Most orders arrive 5–7 business days after dispatch (US). You get tracking the moment it ships.
Not sure it fits? Call an expert
🛡90-Day WarrantyParts replacement
🚚Flat-Rate FreightDelivered to your door
🔒Secure CheckoutEncrypted payment
↩24-Hr Free CancelFull refund within 24h

How ordering works

  1. 1Enter or confirm your VIN
  2. 2We verify exact fitment for your vehicle
  3. 3Flat freight shown up front — no surprises
  4. 490-day warranty included on every part
  5. 5We photograph & confirm the unit before it ships
What you're getting

What's included with this engine

You're buying a complete engine assembly — not a bare block. Here's exactly what arrives bolted to it, and the handful of accessories your mechanic moves over from your current engine during the install.

✓

Included with your engine

Already assembled — ships as one unit
  • Long block — fully assembled
  • Short block
  • Cylinder head
  • Crankshaft
  • Camshaft
  • Pistons
  • Intake manifold
  • Exhaust manifold
  • Oil pan
  • Timing cover
⇄

Not included — transfer these over

Reused from your current engine
  • Wiring harness
  • Bolt-on accessories
Why these aren't included: these parts are tied to your vehicle's exact trim and options, and the ones already on your current engine are almost always in good working order. Your mechanic transfers them across during the install — that's standard practice on an engine replacement, and it keeps your price down.
Quick definition: a short block is the block, crankshaft, camshaft and pistons. A long block adds the cylinder head and valvetrain. A complete engine — what you're buying here — is the long block with the intake manifold, exhaust manifold, oil pan and timing cover already fitted.
Not sure what your install needs? Talk to a parts expert
Financing available

Split this into easy monthly payments

Pre-qualify with PayTomorrow in minutes — all credit types welcome, and checking your options won’t affect your credit score. You’ll see your approved amount and terms instantly.

⚡ Instant decision · 🛡 Soft check (no score impact) · ✅ All credit types welcome

Pre-qualify now — it’s free →

Financing provided by PayTomorrow, a third-party lender. Approval, rate, and terms are set by the lender. Not a guarantee of approval.

Part details

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:

  • 8th VIN digit = "U" (confirms LQ4 engine)

  • "6.0L" badging on rear quarter panels

  • 1500-series

  • 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:

  • Vortec Cylinder Heads: High-flow aluminium castings

  • Forged Steel Crank: Ultra-durable bottom end

  • Simple Fuel System: No high-pressure pumps to fail

  • OE-Spec Components: Exact factory replacement

  • 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.

Order with confidence

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.

✓Real photos of the exact unitWhat you see is what ships
✓A-grade OEM, testedVerified specs, not estimated
✓VIN-matched to your vehicleConfirmed before dispatch
Shipping & delivery

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.

1Ships within 3 - 5 business days ApproxCarefully packed & dispatched from our US warehouse
2Freight to your doorBrought to your door
3Delivered in 5–7 business daysTracked & insured · tracking sent when it ships
Verified buyer reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
📞 Need Help? Call Now