4L80E Shift Enhancer
 

"B&M 70380 - B&M ShiftPlus Electronic Shift Improver Kits
Diesel Shift Enhancer for all 93-98 6.5TD's in any truck using the GM 4L80E electronic overdrive transmission"

Would this work in a 1999 with a 4L80E? Would the two wires that get spliced into be different colors?

that odd 93 to 2000 has same motor and trans i would call B&M see what they have say

i have heard some good things about it from fellow diesel owners. no idea on the wire splicing but even though they had the 4l80e tranny from 93 to around 2006 they changed them a little through the years so i bet wire splicing doesnt work for newer ones is my guess. i would call though

Called B&M. They say will not work on 99's as they have different computer controls. No other wires to splice into, just will not work. Shucks.

How well does this product work?