GM LS6 Motor

GM LS6 Motor for Sale at Reliable Used Part

A GM LS6 Motor from Reliable Used Part can help you get your vehicle back on the road without the cost of a brand-new unit. This listing is intended for Corvette Z06 and Cadillac CTS-V models for model years 2001–2005, and our team can provide fitment guidance before you order. Compare the options here or visit our used engine inventory.

This engine is listed at Reliable Used Part with options from $1,800–$2,500. Your final price depends on the unit and option you choose, so ask our team to confirm availability, condition, included components, and shipping details before you order. Our team can walk you through the GM LS6 Motor options so you can order with confidence.

What Is the GM LS6 Motor?

The GM LS6 Motor is the 5.7-liter aluminum-block V8 introduced in the 2001 Corvette Z06 and later used in the Cadillac CTS-V.

Every unit is built for specific applications, so the details of your vehicle matter more than the name alone. A helpful background resource is the Wikipedia article on the internal combustion engine.

GM LS6 Motor Compatibility and Fitment

The GM LS6 Motor listing is intended for Corvette Z06 and Cadillac CTS-V models for model years 2001–2005. Exact compatibility depends on the model year, trim, engine, and drivetrain, so verify fitment before ordering. Ordering a GM LS6 Motor online should be simple, which is why our team can answer fitment questions before you buy.

• Models: Corvette Z06 and Cadillac CTS-V
• Model years: 2001–2005
• Engine and transmission options: 5.7L LS6 V8

How to Confirm Fitment Before You Buy

To make sure it suits your vehicle, work through this short checklist:

• Match the engine code, or the eighth character of your VIN, with the engine options listed for your vehicle.
• Confirm the model year, trim, displacement, and fuel type (gasoline, diesel, or hybrid).
• Note features that affect compatibility, such as turbocharging, direct injection, or variable valve timing.
• Check whether you also need related components such as the intake, wiring harness, sensors, or ECU.
• Ask our team to confirm availability, included components, and condition details before you order.

You can decode your VIN with the NHTSA VIN decoder and check for open safety recalls on the NHTSA recalls page before you start a major repair.

Signs You May Need a Replacement Engine

Consider a replacement engine if you notice any of the following:

• Persistent knocking, ticking, or tapping noises from inside the engine
• Excessive oil consumption, oil leaks, or blue smoke from the exhaust
• Repeated overheating or coolant loss without an external leak
• Rough running, misfires, or low compression on one or more cylinders
• Metal particles in the oil, or a check engine light that returns after repairs

These symptoms can point to serious internal wear, but smaller faults can cause them too, so have a qualified technician diagnose the vehicle before you commit to a replacement.

Why Buy a Used Engine from Reliable Used Part?

Buying a used GM LS6 Motor from Reliable Used Part gives you access to tested parts, clear fitment help, and nationwide USA shipping. Our team can confirm availability, condition, and warranty terms before you pay, and you can contact Reliable Used Part at any time with questions. Whether you are completing a repair or a full rebuild, the GM LS6 Motor is one of the most important parts to match correctly.

Working on more than one component? You may also want to look at our GM 5.3 Vortec Engine, L87 Engine and GM L83 Engine, or browse the full used engine inventory. Ask us about current GM LS6 Motor stock if you do not see the exact option you need. You can also see all General Motors engine listings.

GM LS6 Motor FAQs