Won't STOP!

[ZeroCool]

you're positive the truck needs to be running? Can anyone confirm this?

 

[Brandon X]

Everytime my mechanic has bled brakes the vehicle has been off, and ive seen him bleed a lot of brakes.

 

[WICKEDOWESIX]

The car does NOT need to be on to bleed the brakes.

 

[ZeroCool]

Thought so... Thanks

 

[retorq]

I do mine off. There are some ABS systems that require special procedures and scan tools. I don't think ours is one ...

 

[ZeroCool]

It does require a tech 2 scanner to run the ABS module.. I think ill just bite the bullet at take it to the dealer... boo

 

[hassoun]

my denali has to be on and requires a scanner coz you have to bleed it through the ABS!

 

[drowndindreams]

did you pump the brakes after you replaced the master cylinder?