I have to install a new master cylinder on my 97 Suburban K1500 4x4 with ABS. If I bench bleed the m/cyl before installing and bleed the fittings while installing, should i have any issues with the ABS (such as bleeding the ABS unit?) I know how to bleed the lines at the wheels but have never touched the ABS. If the abs needs service, are special tools needed? Any thoughts would be appreciated.