2000 Tahoe Brake bleeding Question

[rallye455]

I have a dumb question about the brakes on my tow vehicle (2000 Tahoe). Today I changed the rotors, pads and calipers on the front of my Tahoe and then bled all 4 brakes till there was no air present in the bleeder line but I dont have a pedal when the truck is running. Is there something special that needs to be done with the ABS or ??????? I'm at a loss....hopefully someone has had this same problem and can point me in the right direction.

[Vegas69]

Must not have got all the air out of the fronts. Not usually any special bleeding sequence with ABS unless you are replacing the ABS unit.

[zcrz]

I agree, must have air somewhere...

[rallye455]

Do you think I still need to bleed all 4 or should I be able to get away with just doing the fronts? I know nothing about ABS systems. I thought maybe there was something else I needed to do.

[68protouring454]

sometimes the proportion valve will close or partially close when the system feels a big loss, because most of the newer stuff in a single reservoir. sometimes i have needed to leave bleeders open and hit brake pedal like a panic stop to open it back up.
i was Leary after being told that by the gm dealer, but it worked, it was either that or a new prop valve.
this was on a 98 3/4 ton chevy truck

[elitecustombody]

make sure your calipers were installed on the proper side,and the bleeder valve is pointing up, you could have left caliper on right side and the right caliper on left, you'd never be able to bleed the air out