Posted 6/30/2020 19:13 (#8346030 - in reply to #8346014) Subject: RE: GMC Duramax brakes
NC Iowa
The brake booster works off the power steering pump somehow. I changed the power steering fluid, and had to pump the brakes to get the fluid out. Good explanation on dieselplace.com
Edit. I changed the brake fluid as well. Bleed screws were in bad shape.
GMC Duramax brakes
