Combination Valve Bleed Tool Compatible With: Various non-adjustable GM combination valves, Disc and Disk/Drum PV2 & PV4 and AC Delco 172-1353, 172-1371 brake proportioning valves. Easy to Use: Simply remove the brake light warning plug and replace it with the brake proportioning valve bleeding tool and you will be free to bleed the brakes without the hassle of tripping the brake warning light.
