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 28 of 28 engine references. All pages can be browsed; choose LS, LT or LQ to narrow the list. These are reference codes, not engines verified in stock.
Chevrolet / ENGINE REFERENCEL9EView specs & engine information ↗Chevrolet / ENGINE REFERENCEL9HView specs & engine information ↗Chevrolet / ENGINE REFERENCEL20View specs & engine information ↗Chevrolet / ENGINE REFERENCEL76View specs & engine information ↗Chevrolet / ENGINE REFERENCEL77View specs & engine information ↗Chevrolet / ENGINE REFERENCEL79View specs & engine information ↗Chevrolet / ENGINE REFERENCEL92View specs & engine information ↗Chevrolet / ENGINE REFERENCEL94View specs & engine information ↗Chevrolet / ENGINE REFERENCEL96View specs & engine information ↗Chevrolet / ENGINE REFERENCEL99View specs & engine information ↗Chevrolet / ENGINE REFERENCELC9View specs & engine information ↗Chevrolet / ENGINE REFERENCELFAView specs & engine information ↗Chevrolet / ENGINE REFERENCELH6View specs & engine information ↗Chevrolet / ENGINE REFERENCELH8View specs & engine information ↗Chevrolet / ENGINE REFERENCELH9View specs & engine information ↗Chevrolet / ENGINE REFERENCELMGView specs & engine information ↗Chevrolet / ENGINE REFERENCELS2View specs & engine information ↗Chevrolet / ENGINE REFERENCELS3View specs & engine information ↗Chevrolet / ENGINE REFERENCELS4View specs & engine information ↗Chevrolet / ENGINE REFERENCELS7View specs & engine information ↗Chevrolet / ENGINE REFERENCELS9View specs & engine information ↗Chevrolet / ENGINE REFERENCELSAView specs & engine information ↗Chevrolet / ENGINE REFERENCELSX376View specs & engine information ↗Chevrolet / ENGINE REFERENCELSX454View specs & engine information ↗Chevrolet / ENGINE REFERENCELY2View specs & engine information ↗Chevrolet / ENGINE REFERENCELY5View specs & engine information ↗Chevrolet / ENGINE REFERENCELY6View specs & engine information ↗Chevrolet / ENGINE REFERENCELZ1View 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.
READY TO SOURCE?Let's find the right part
Start your enquiry ↗Let's find the right part
for your next move.
Tell us what you're looking for. We'll use your engine code or VIN details to review compatibility.