1997 Chevy Blazer ABS light

In the diagnostic charts that I read for P0719, the action taken is the VCM illuminates the malfunction indicator lamp, otherwise known as the check engine lamp, that is also the reason it has a 'P' prefix for powertrain. Knowing that, chances are that this is not related to your ABS fault. ABS codes on your vehicle, can only be extracted with a scan tool. I would guess that the powertrain code was discovered with a code reader, these usually do not interrogate other vehicle systems. Your ABS code would have a 'C' prefix. After determining what ABS code(s) are stored, it may shed some light on a diagnosis.