TOTAL BRAKE FAILURE!
Brake fluid reservoir is at max and I tried to pump the brake pedal for pressure and got nothing

 

What does your post have to do with this Thread started near ELEVEN YEARS AGO?????? Check this link in blue... READ: Old Threads/'Necro-Bumping'

If you have a question, post it in a new thread and indicate year, model, miles, recent work done that may bare on your situation, and we may be able to help you out. Avoid digging up OLD threads in the future. Meanwhile, give a search on the web about H3 Hummer Brake Master Cylinder issues/failure.

 

So you want a new thread started every time for similar issues?