GM Engines

Remanufactured GM engines here cover Chevrolet, GMC, Buick, Pontiac, Cadillac, Saturn and Oldsmobile, from 1.2L four-cylinders through the 6.6L Duramax diesel and the 454 big block, in OHV and DOHC form.

What fits what

Coverage runs 1975 through 2024. Truck and SUV listings include the L83, L84 and LMG 5.3L, the L76 and L96 6.0L, the L86 and L87 6.2L, the LV3 4.3L direct injection, and the LLY, LGL and LMH 6.6L Duramax diesels, fitted to Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, Express and Savana. Car and crossover listings include the Ecotec 2.0L, 2.2L and 2.4L, the LUJ and LUV 1.4L turbo, the LUW 1.8L, the 1.2L Spark, the LF1 and LFW 3.0L, the LZ4 3.5L, the 3.9L, the 3.1L and the LY7, LLT and LFX 3.6L, fitted to Cobalt, HHR, Cruze, Sonic, Trax, Malibu, Equinox, Terrain, Solstice, Sky, Ion, Regal, Verano, Encore, Lucerne, Allure, LaCrosse, G3, G6, Aveo, Intrigue, Aurora, and Cadillac ATS, CTS, STS and SRX.

How to identify yours

GM uses eight-digit casting numbers on the block, and they are published on these listings - examples include 12569004, 12576177, 12576181, 12610176, 12612776, 12620287, 12629401, 12629402 and 55577377. Head castings include 799, 243, 823, 234, 5364, 12564243, 12590746 and 12611611; crank castings include 12552216. Casting locations quoted here include in the valley, the rear end of the block and the driver side of the block. The eighth digit of your VIN is the engine code, and codes B, C and J appear on these listings. Read the notes carefully on the V8s: Displacement on Demand (DOD/AFM) and variable valve timing are the difference between engines that otherwise look the same, and several listings are explicitly with or without DOD, with or without VVT, or federal versus SMOG emissions.

Core charge and warranty

These are exchange units, so a refundable core charge may apply and your old engine goes back as the core. A 6-month limited warranty is standard. On qualifying remanufactured units a 7-year / 1,000,000-mile extended warranty and a core fee waiver are available on request and must be arranged at the time of purchase - they are not added by default. Call 216-250-6666 with your casting number and VIN.