PCM Of NC 4L60E/70E To 4L80E Swap Harness

4L80 Swap Harness:  New, more compact design!  This harness makes a 4L80 swap much simpler.   It is plug & play and requires only basic tuning. (NO SEGMENT SWAP NECESSARY!) Just remove a few codes, re-tune the shift points for the new 4L80e gear ratios and you’re on your way! No complicated OS swaps or hurdles to jump. This is the easiest solution on the market. Input speed is not used, no input speed sensor wiring is necessary. Only output speed is necessary, using your OEM wiring. PRNDL switch transfers over from your original transmission.

For 2009+ models, you will need to buy a PRNDL switch. 

Options: 
-2006-2008 with external PRNDL switch (pictured)
-2009 with internal switch (Must add external switch to your 4L80E) The conversion harness will have an additional connector to plug in the PRNDL switch (not pictured).