[83GMCK2500]

The one thing I didn't do with the brake upgrade was flush the brake fluid, I just topped it off and bled the fronts. A friend has a power bleeder and needed to do his soon so I held off. With the power bleeder you clamp a plate onto the top of the MC, pressurize to 12-15 psi and go around opening bleeders. It has a reservoir of fluid itself so it maintains a level in the MC so you're (ideally) not introducing air into the system. I siphoned the old fluid out of mine first so I could clean the reservoir, it was nasty.

Before


After


As I worked my way around under the truck I was shocked at the lack of fluid flow. With the requisite 15 psi in the power bleeder I completely removed the bleeder from the right rear wheel cylinder and poked around with a probe looking for blockage. Nothing encountered so I put the bleeder back in, left it cracked, had David depress the brake...VOILA! I had fluid. I couple cycles of standard bleeding with the power bleeder and it started flowing well. Repeat procedure for the left rear, resulted in good flow. Fronts flowed well when I opened their bleeders. Truck stops very well now. The brake upgrade was a noticeable improvement, the new fluid helped as well.