NO BRAKE PRESSURE AFTER ALMOST FULL SYSTEM REPLACEMENT!!

[goldpack]

Just in mine: previous owner left it parked outside for 3 years. Left front brake caliper was seized.
Replaced that left front caliper, the master cylinder and reservoir, and then the left front brake line...and after that 3rd part, ...and bleeding, bleeding, bleeding it finally started to work and stop like a good truck.

 

[goldpack]

thought I would add to my last post with a link. (was typing yesterday on my cell phone, and much harder to hunt and link)

I posted a bit of my own brake issues last year on this thread,
(maybe helpful to the original poster as they have a 1 ton,...and 3/4 and 1 tons share some parts)

https://www.gmsquarebody.com/threads/1985-gmc-c25-front-brake-hoses-issue.49054

and it took forever to bleed the brakes,...
truck was parked outside for 3 years, left front caliper frozen with the brake stuck on.

bought and changed one part at a time, left front caliper, master cylinder / reservoir, and the left front hose.

brakes work great today,...but an ordeal to get them that way.

edit and for swapping,...I was happy napa (and others) sell the traditional heavy metal brake fluid reservoir, seen some plastic ones on the market,...but the OEM type looks like it was from 1930 = like for a timeless dinosaur.

 

[Grit dog]

No point in speculating further until @BabyD provides more info and input.