1992 Pontiac Bonneville air in lines

Have a helper pump the brake pedal 5 times then hold pressure on it. Starting from the furthest wheel from the mastercylender, open the bleeder valve and allow the fluid / air to be pressed out by the pressure on the brake pedal. After you tighten the bleeder, then your helper can release the pedal and do it again until there is no air coming out, only brake fluid. Do this on each wheel. Remember do it in this order, pass rear, driver rear, pass front, driver front. Also, remember to keep the master cylender full at all times. If it gets emptied, you will have an air problem there too.