Used Chevrolet Silverado 1500 Engines
Used, remanufactured and rebuilt engines for the 1999–2026 Chevrolet Silverado 1500 — tested before they ship and covered by warranty. Tell us your truck and we’ll match the exact engine.
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Engine Options
Which engine does your Silverado 1500 have?
The Silverado 1500 has been sold with more than a dozen different engines since 1999, and several of them share a displacement. A 5.3L from a 2005 truck will not bolt into a 2015, and even within one generation the 5.3L came in iron-block, aluminum-block and flex-fuel versions.
The table below lists what was offered in each generation. To be certain which one your truck has, check the eighth character of the VIN or the RPO code on the Service Parts Identification label.
| Engine | Code | Notes |
|---|---|---|
| 4.3L V6 Vortec 4300 | Code: L35 / LU3 | L35 to 2002; LU3 from 2003. |
| 4.8L V8 Vortec 4800 | Code: LR4 | |
| 5.3L V8 Vortec 5300 | Code: LM7 | Iron block; the standard 5.3L of this generation. |
| 5.3L V8 Vortec 5300, flex-fuel | Code: L59 | E85-capable version of the LM7, from 2002. |
| 5.3L V8 Vortec 5300 High Output | Code: L33 | Aluminum block, 2005–2007 extended-cab 4WD trucks only. |
| 6.0L V8 Vortec 6000 | Code: LQ4 / LQ9 | LQ4 in the 1500HD; LQ9 High Output in the SS and VortecMax trucks. |
| Engine | Code | Notes |
|---|---|---|
| 4.3L V6 Vortec 4300 | Code: LU3 | |
| 4.8L V8 Vortec 4800 | Code: LY2 / L20 | LY2 to 2009; L20 with variable valve timing from 2010. |
| 5.3L V8 Vortec 5300, iron block | Code: LY5 / LMG | LY5 2007–2009; flex-fuel LMG 2007–2013. Both have Active Fuel Management. |
| 5.3L V8 Vortec 5300, aluminum block | Code: LH6 / LC9 | LH6 2007–2009; flex-fuel LC9 2007–2013. Both have Active Fuel Management. |
| 6.0L V8 Vortec 6000 | Code: L76 | VortecMax package, 2007–2009. |
| 6.2L V8 Vortec 6200 | Code: L9H | 2009–2013, mainly on higher trims. No Active Fuel Management. |
| 6.0L V8 two-mode hybrid | Crew-cab Hybrid models, 2009–2013. |
| Engine | Code | Notes |
|---|---|---|
| 4.3L V6 EcoTec3 | Code: LV3 | |
| 5.3L V8 EcoTec3 | Code: L83 | Direct injection with Active Fuel Management. |
| 6.2L V8 EcoTec3 | Code: L86 | Direct injection with Active Fuel Management. |
| Engine | Code | Notes |
|---|---|---|
| 2.7L turbocharged four-cylinder | Code: L3B | Sold as TurboMax from the 2024 model year. |
| 4.3L V6 EcoTec3 | Code: LV3 | Work-truck trims, 2019–2021. |
| 5.3L V8 EcoTec3 | Code: L82 / L84 | L82 with Active Fuel Management, 2019–2021 on lower trims; L84 with Dynamic Fuel Management. |
| 6.2L V8 EcoTec3 | Code: L87 | |
| 3.0L Duramax inline-six diesel | Code: LM2 / LZ0 | LM2 2020–2022; updated LZ0 from 2023. |
Not sure which one is yours? Request a quote and we’ll work it out from your VIN.
Before You Order
What to check before you order
Find your engine code
The eighth character of the VIN identifies the engine. The RPO code (LM7, L83, L84 and so on) is printed on the Service Parts Identification label — inside the glove box on older trucks, or in a QR code on the driver’s door pillar from about 2018.
Watch the changeover years
Two designs were sold side by side in some years: 2007 “Classic” trucks are the 1999–2006 design, 2019 “LD” trucks are the 2014–2018 design, and 2022 “Limited” trucks are the pre-refresh design. Tell us which you have.
Check for cylinder deactivation
Most 5.3L engines from 2007, and the 6.2L from 2014, use Active Fuel Management or, from 2019, Dynamic Fuel Management. A replacement has to match what the truck’s computer expects.
Flex-fuel or gasoline
Flex-fuel (E85) engines such as the L59, LMG and LC9 use different injectors and sensors from the gasoline-only versions. Replace like with like.
Have your VIN ready
With the VIN we can confirm the engine code, model year and drivetrain before we quote, which avoids ordering the wrong version.
Common Problems
Common Silverado 1500 engine problems
AFM lifter failure — 5.3L from 2007, 6.2L from 2014
Collapsed lifters on the cylinders that deactivate are the best-known fault on these engines. Signs are a misfire, a ticking noise and a check-engine light; left alone, it can damage the camshaft.
Oil consumption — 2007–2011 5.3L
GM issued a service bulletin for 5.3L engines with Active Fuel Management from these years that burn oil between changes. That fouls spark plugs and, if the level runs low, can lead to engine damage.
Cold-start knock and knock-sensor faults — 1999–2006 V8s
The 4.8L, 5.3L and 6.0L V8s from this generation are known for a knocking noise on a cold start (piston slap) and for knock sensors that fail when moisture collects under the intake manifold.
Lifter and bearing failures on newer V8s
Some trucks built in late 2020 and early 2021 with Dynamic Fuel Management suffered lifter failures, and in 2025 GM recalled 2021–2024 trucks with the 6.2L (L87) over bearing defects. Check for open recalls with a dealer before paying for an engine.
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FAQ
Silverado 1500 engine questions, answered
Will a 5.3L from a different year fit my Silverado 1500?
Only within limits. Engines generally interchange inside the same generation when the RPO code matches, but a Vortec 5.3L (1999–2013) and an EcoTec3 5.3L (2014 on) are different designs with different fuel systems and electronics. Send us your VIN and we will confirm what fits.
How do I tell which 5.3L I have?
Check the eighth character of your VIN or the RPO code on the Service Parts Identification label. LM7, L59, L33, LY5, LMG, LH6, LC9, L83, L82 and L84 are all 5.3L engines, and they are not all interchangeable.
Can I use an engine from a Tahoe, Suburban or GMC Sierra?
Often, yes. Those trucks share engine families with the Silverado 1500, so an engine with the same RPO code from the same generation is normally the same unit. Send us your VIN and we will confirm the match.
Do you have engines for the Silverado 2500HD and 3500HD?
Yes. Heavy-duty trucks use different engines, including the 6.0L and 6.6L gasoline V8s and the 6.6L Duramax diesel. Choose your model in the quote form, or call us.
Do you have engines for the redesigned 2027 Silverado?
The 2027 Silverado 1500 is a new generation with new 5.7L and 6.6L V8s, so its engines do not interchange with the ones on this page. Call us and we will tell you what we can source.
Is the engine covered by a warranty?
Yes. Every engine we sell is covered by warranty, and extended cover is available at extra cost. The full terms are in our Warranty Policy.
Ready to replace your Silverado 1500 engine?
Tell us the year and have your VIN to hand — a specialist will confirm the right unit and send you a quote.
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