GMC Repair: replace and repair master cylinder for 2000 gmc sierra, gmc sierra, abs system

Question
I have replaced master cylinder and I'm unable to bleed the brakes on the abs system to get it realigned again so my brakes will work.

Answer
many times on these types of trucks you will need to do what is called and automated bleed process which requires a special diagnostic tool to purge air from the EBCM, you may need to do it upwards of 30 times and bleed the brake system itself just as many