[lowrodderchev]

so its back and worst than ever. yesterday I drove for 45 minutes to fresno and coming off the freeway the pedal was really tight but it did brake. well coming back on 198 I realized I got no brakes YIKES!!! I coasted into a turn off. master cylinder full, no leaks. the pedal goes down to the floor and barely slows down the truck. 6 hours later I go outside to move it into the garage and still same issue but this morning I go outside to check it underneath and the brakes are working fine. no issues. so air in the line? bad booster? I'm lost here.