Bleeding procedure

[jpawl]

99' tahoe
changed master due to sinking pedal but can't seem to bleed this front ABS system down properly.
yes,i bled it correctly procedure wise(master and whole sytem) but i think with this system i might need to bring it to the dealer as to actuate the ABS manually with their scan tool.
is this right or am i missing something?

thank, jpawl

[MT-2500]

Originally Posted by jpawl

99' tahoe
changed master due to sinking pedal but can't seem to bleed this front ABS system down properly.
yes,i bled it correctly procedure wise(master and whole sytem) but i think with this system i might need to bring it to the dealer as to actuate the ABS manually with their scan tool.
is this right or am i missing something?

thank, jpawl

May be.
You might try bleeding with key on.

[jpawl]

Originally Posted by MT-2500

May be.
You might try bleeding with key on.

That I didn't do. I did it with key off and engine running but not KOEO.
Once I find the prob I will let you know.

[777stickman]

I looked in my '98 C/K factory manual and it did make reference to using the scan tool for ABS bleeding. If that's the case in the real world, I can't say.

[j cAT]

Originally Posted by jpawl

99' tahoe
changed master due to sinking pedal but can't seem to bleed this front ABS system down properly.
yes,i bled it correctly procedure wise(master and whole sytem) but i think with this system i might need to bring it to the dealer as to actuate the ABS manually with their scan tool.
is this right or am i missing something?

thank, jpawl

recently some have had with the old body style The ABS module causing your issue of the sinking pedal ..they went to the scrap yard and they picked up one this solved their problem...

they had no leaks ....

[jpawl]

Originally Posted by 777stickman

I looked in my '98 C/K factory manual and it did make reference to using the scan tool for ABS bleeding. If that's the case in the real world, I can't say.

Thanks for looking it up.The fix had to go through the dealer.Cost me $91.95 to do a automated bleed with their GM scan tool.
Thanks to all involved for the help.