Description
Swap your 4L60E transmission to the much stronger 4L80E transmission with our 4L60E to 4L80E adapter (adapter only). You can use the computer you have now on 1998 up models with the use of our #10X wiring harness. The transfer case you have now can be used as is and will be moved 1 3/4 to 3 1/2 inches to the rear.
