1999 chevy tahoe 4x4 spongy brakes. will not even get into garage for inspection. bled all 4 and the anti lock system.no difference.
1999 Chevrolet tahoe lt 5.7
checked brake pads ok bled all 4 wheels. bled abs. no difference. inspection mech. won't go any further with spongy feeling. took out for slam test they worked.there is about 2 to 3 inch play to pedal. while bleeding fluid would back up to the reservoir when pressing brakes.
WelcomeCustomer How did you bleed the ABS unit?
opened bleeder valve when to engine was off . under computer.
Ok. I regret to tell you that you will need to visit the dealer to bleed the ABS. There is a function of the scan tool that cycles the valves, solenoids and pump in a sequence that releases trapped air. I have watched skilled techs waste several hours trying to bleed these without the scan tool and get no where.
GM Grand Master Technician 2007. 11 years experience.