I have a 1989 1500 and the brakes are mushy. I plan on installing new brake lines, calipers, and related hardware. I plan on bleeding the rear ABS unit. What exactly did the 2002 Tahoe master cylinder do for your brake feel? Did the pedal get hard or .....?No problem. For me, the biggest important I make, for brake pedal feel, was to do the MC swap. I got my MC off of a 2002 Tahoe, I found at pull-a-part. Been going strong for ,IDK, 7 or 8 years. There is a write up on here about doing the swap, if your interested. If you click on the first pic, it will enlarge, and you can zoom in, on the MC.