From our shop experience specializing in fleet and commercial vehicle braking systems since 1985:

• Pushrod Alignment: Ensure the pedal linkage aligns straight with the firewall bracket during reassembly. Tight engine packaging on full-size GM vans can increase the risk of binding, which will score internal spool seals and lead to hydraulic fluid bypass.
• Power Steering Fluid Flush: Commercial van applications subject power steering fluid to high thermal stress. Always perform a complete fluid flush before connecting lines to keep high-pressure internal spool and check valves clean and functional.
• Corrosion Barrier: Our exclusive rust-prohibitive finishing process coats raw cast iron surfaces to withstand road spray and underbody exposure in high-mileage fleet environments.