Akslowroller Posted June 8, 2012 Report Share Posted June 8, 2012 So I bought a used 4l80e with out even thinking and realized it was out of a 98. I see online you can change the internal wiring harness to update it but is that all I need to make this tranny work in my ss? Or will it even work at all? Any advice would be great. Quote Link to comment Share on other sites More sharing options...
silverado777 Posted June 8, 2012 Report Share Posted June 8, 2012 I could be wrong but I think it needs to be from a 99 and up Quote Link to comment Share on other sites More sharing options...
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