Did this start before you replaced the parts? Did you bench-bleed the master cylinder?

Answered by caradiodoc (expert)
17,274 answers provided

Yes,that was the reason I replaced the parts. I bleed the entire brake system.

Response from nuaka
1 question asked

Did you bench-bleed the master cylinder before you installed it? Does it sit at an angle with the front higher than the back?

Answered by caradiodoc (expert)
17,274 answers provided

No, I bleed the system after installing the new master cylinder,brake booster, new wheel-cylinders; and new rear shoes. No, the truck does not sit higher on either end, it sits level.

Response from nuaka
1 question asked

Not the truck; the master cylinder.

Answered by caradiodoc (expert)
17,274 answers provided

We already replaced the ABS unit. We believe that's what was causing the brakes not to work. But we are still waiting on response of customer. However, I believe the master cylinder was level.

Response from nuaka
1 question asked

Rats. A lot of GM master cylinders sit higher in the front and air hangs up right by the steel line. It has to go downhill to be bled out at the wheels or to get sucked back into the reservoir. Bleeding at that connection usually solves the mushy pedal.

Answered by caradiodoc (expert)
17,274 answers provided