What Year Is My 4L80E? How do I tell what year my 4L80E is? year is stamped in the yellow metal tag. Also the 4 letters/numbers on the white barcode sticker can tell you what it came out of. What year 4L80E are the same? The 4L80E transmission was introduced in 1991 and remained in … Continue reading What Year Is My 4L80E?
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