General Motors’ 4L60-E automatic transmission is one of the most popular transmissions ever built. It was initially designed to replace and modernize GM’s older Turbo 700R4 — also known as the original 4L60 gearbox. The legendary automaker manufactured the transmission and installed it in some of its most popular cars, trucks, and SUVs between 1993 and 2013.  The gearbox’s name is a basic code that breaks down its specifications — it’s a four (4) speed transmission designed for longitudinally
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