Ru2slo_99

I am working on a 1999 Denali that had a 5.7/4L60E. The 5.7 was chunked for a 2002 5.3. We are using the original 60, the 5.3's computer is tuned for the 60, but the wiring harness is for a 6.0/4L80E. Will the wiring harness work with the 60 computer and trans?

Thanks
Richie

G-Body

iTrader: (4)

There are a couple of differences between the 60 and 80 harnesses.

https://ls1tech.com/forums/conversions-swaps/600178-4l80-e-4l60-e-electronics-compatible.html