94' Suburban ABS Pump ???

450MAGNUM · 09-05-2006, 07:09 PM

I still have brakes, but the pedal fades if applied slowly. The master cylinder has been replaced and the brakes bled with no more air in the system. The front pin (looks like some kind of proportioning valve) on the lower side of the ABS pump pops out if I let the pedal get near the floor. One more note, if you pump the brakes the pedal is high and firm, but let it set and hit them and it fades. Any help with this would be great!!

MexToy93 · 09-05-2006, 10:30 PM

There's a small tool that I've used before on older Chevy's that compresses
the front pin while you bleed the brakes. If you don't use it, you won't get
all the air out of the rear brakes.

09-05-2006, 07:09 PM	#1
450MAGNUM Junior Member Join Date: Sep 2006 Posts: 1	94' Suburban ABS Pump ??? I still have brakes, but the pedal fades if applied slowly. The master cylinder has been replaced and the brakes bled with no more air in the system. The front pin (looks like some kind of proportioning valve) on the lower side of the ABS pump pops out if I let the pedal get near the floor. One more note, if you pump the brakes the pedal is high and firm, but let it set and hit them and it fades. Any help with this would be great!!

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09-05-2006, 10:30 PM	#2
MexToy93 Full Member Join Date: Aug 2006 Posts: 19	There's a small tool that I've used before on older Chevy's that compresses the front pin while you bleed the brakes. If you don't use it, you won't get all the air out of the rear brakes.