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1994 silverado 4x4 350 CID 1500 ext cab w4spd auto trans How do you tell if it is a 4L60-E or a 4L80-E?

Answer

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Wiki User
01/16/2009

GRAB YOUR VIN NUMBER AND GO TO A DEALER. THEY SHOULD BE ABLE TO TELL YOU WHICH TRANNY YOU HAVE.

The better info would be: If it has a square shaped transmission pan and has 16 bolts around it, then it is a 4L60e. If it is more of a rectangular shaped pan and has 17 bolts, then it is a 4L80e.