Brake Shoe Adjustment: Buick
Remove adjusting hole cover and install a suitable tool through hole to move self-adjuster actuator lever off adjusting screw. Use a suitable tool to turn adjusting screw and expand brake shoes until wheel can just be turned by hand. Make sure drag is equal at all wheels. Back off adjusting screw 30 notches. If shoes still drag, back off an additional one or two notches, or check for tight parking brake cable.