SERGIN ENGINES / GENERAL MOTORS DIRECTORY
GM Engine Codes
Explore General Motors brands, engine families and commonly requested replacement part types. Current and discontinued marques appear together for reference.
GM
ENGINE CODE • OEM NUMBER • VINFitment, stock, condition and price are checked individually.
12Current & former GM marques
428Curated GM code / family entries
122Popular parts types
16Automotive parts systems
GM ENGINE LOOKUP
All GM makes ↗All GM engine codes
All engine familiesClassic small-block V8Gen III LS / Vortec V8Gen IV LS / Vortec V8Gen V EcoTec3 / LT V8Classic big-block V8Duramax dieselEcotec I4 / turboV6 / 3800 / High FeatureTruck / SUV gas V8Duramax light / heavy-duty dieselV6 / turbo / inlineNorthstar / historic V8LS / LT / Vortec V8Cadillac V6 and turbo3800 / V6Turbo and Ecotec four-cylinderClassic Buick V8LS / Pontiac performanceQuad 4 / Ecotec / four cylinderClassic Pontiac enginesV6 / utilityOldsmobile Rocket / V8V6 / shared GMQuad 4 / AuroraEcotec / four-cylinderH1 / H2 / H3 enginesCommodore / HSV V8Holden / GM V6Four-cylinder / turboGM-era Opel petrolGM-era Opel dieselGM-era Vauxhall petrolGM-era Vauxhall dieselGM-era Saab four / six cylinder
Showing 48 of 439 engine references · Page 1 of 10. All pages can be browsed; choose LS, LT or LQ to narrow the list. These are reference codes, not engines verified in stock.
Buick / ENGINE REFERENCE1.4 LUJ TurboView specs & engine information ↗Buick / ENGINE REFERENCE1.5 LFV TurboView specs & engine information ↗Buick / ENGINE REFERENCE2.0 LSY TurboView specs & engine information ↗Buick / ENGINE REFERENCE2.0 LTG TurboView specs & engine information ↗Buick / ENGINE REFERENCE2.4 LEAView specs & engine information ↗Buick / ENGINE REFERENCE2.5 LCVView specs & engine information ↗Buick / ENGINE REFERENCE3.6 LFX V6View specs & engine information ↗Buick / ENGINE REFERENCE3.6 LGX V6View specs & engine information ↗Buick / ENGINE REFERENCE3.8 Series III V6View specs & engine information ↗Buick / ENGINE REFERENCE3.8 Series II V6View specs & engine information ↗Buick / ENGINE REFERENCEBuick 215View specs & engine information ↗Buick / ENGINE REFERENCEBuick 300View specs & engine information ↗Buick / ENGINE REFERENCEBuick 340View specs & engine information ↗Buick / ENGINE REFERENCEBuick 350View specs & engine information ↗Buick / ENGINE REFERENCEBuick 400View specs & engine information ↗Buick / ENGINE REFERENCEBuick 430View specs & engine information ↗Buick / ENGINE REFERENCEBuick 455View specs & engine information ↗Buick / ENGINE REFERENCEL3ZView specs & engine information ↗Buick / ENGINE REFERENCEL26View specs & engine information ↗Buick / ENGINE REFERENCEL27View specs & engine information ↗Buick / ENGINE REFERENCEL32View specs & engine information ↗Buick / ENGINE REFERENCEL36View specs & engine information ↗Buick / ENGINE REFERENCEL61View specs & engine information ↗Buick / ENGINE REFERENCEL67View specs & engine information ↗Buick / ENGINE REFERENCEL82View specs & engine information ↗Buick / ENGINE REFERENCELA1View specs & engine information ↗Buick / ENGINE REFERENCELAFView specs & engine information ↗Buick / ENGINE REFERENCELE5View specs & engine information ↗Buick / ENGINE REFERENCELFWView specs & engine information ↗Buick / ENGINE REFERENCELG3View specs & engine information ↗Buick / ENGINE REFERENCELHUView specs & engine information ↗Buick / ENGINE REFERENCELKWView specs & engine information ↗Buick / ENGINE REFERENCELLTView specs & engine information ↗Buick / ENGINE REFERENCELN3View specs & engine information ↗Buick / ENGINE REFERENCELUVView specs & engine information ↗Buick / ENGINE REFERENCELY7View specs & engine information ↗Cadillac / ENGINE REFERENCE2.0 LSY TurboView specs & engine information ↗Cadillac / ENGINE REFERENCE2.0 LTG TurboView specs & engine information ↗Cadillac / ENGINE REFERENCE2.5 LCVView specs & engine information ↗Cadillac / ENGINE REFERENCE3.0 LGW Twin-Turbo V6View specs & engine information ↗Cadillac / ENGINE REFERENCE3.6 LFX V6View specs & engine information ↗Cadillac / ENGINE REFERENCE3.6 LGX V6View specs & engine information ↗Cadillac / ENGINE REFERENCE4.2 Blackwing Twin-Turbo V8View specs & engine information ↗Cadillac / ENGINE REFERENCE5.3 Vortec V8View specs & engine information ↗Cadillac / ENGINE REFERENCE6.2 L86 V8View specs & engine information ↗Cadillac / ENGINE REFERENCE6.2 LT4 Supercharged V8View specs & engine information ↗Cadillac / ENGINE REFERENCEHT4100View specs & engine information ↗Cadillac / ENGINE REFERENCEHT4500View specs & engine information ↗
Important identification note
General Motors engine codes can cover multiple variations. GM-era Opel, Vauxhall, Saab and Holden are historical ownership associations; not every engine was engineered by GM. A directory entry does not guarantee fitment, interchange, OEM sourcing, available stock, or a quoted price. Verify OEM numbers and VIN before ordering.
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