z28_theantirice

So I just got done replacing all the rotors, pads and completely flushed the brake fluid with some SuperBlue. Properly bleed all the brakes and am sure there is no air in the lines. But the pedal will not get firm and feels like mush. Do I have to bleed the ABS module? If so, is it the same procedure as with the calipers? Does it make a difference if I have traction control?

THanks!

mzgp5x

I have a 1997 Camaro. There are two bleeders on the ABS unit. I had to remove air in the ABS unit. I think traction control is throttle activated, not a brake system input.

Fire67

The TCS does affect the brakes... If you have TCS, its the box below the ABS block. It needs to be bled as well if there is air between it and the master cylinder.

Youre "supposed" to have a gm service center or equivalent do the bleeding with a TEC3 tool. The TEC3 will cylce solenoids and tell you which bleeder screw on the ABS to open and when.

Just open the bleeder screws one at a time bleeding all air out of one before going to the next. Start with the screw closest to the master cylinder and move away from there.

Ive done it many times without cycling any solenoids and had no issues. You can cycle the solenoids manually with some jumper wires to the connectors (on, off, on, off, etc.. while having someone pump the brakes) But I never do that unless its absolutely necessary. Mainly because I have no idea what gets fed to those terminals for voltage, so 12v may or may not harm the solenoids.

teke184

if you didn't pull any lines off...how would you get air in the system unless you ran it dry?

just flushing should prevent air from entering....i would think.

but good info on the bleeding procedure.