Why Does GM Keep Reusing Engine Codes?

Many GM engines share similar RPO codes; multiple different blocks are known as LS6 or LT1. But there's actually a reason as ...
GM Authority

GM Investigating Occasional Duramax Diesel LZ0 Engine Misfires

General Motors is currently investigating reports of an occasional misfire affecting vehicles equipped with the 3.0L I6 LZ0 turbodiesel Duramax engine. According to preliminary details outlined in a ...