08/09 Hydroboost conversion

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May 9, 2024 | 05:43 PM

#11

legerwn

Senior Member

Joined: Apr 2010

Posts: 1,010

From: Deep South Louisiana

take a look at this one, ACDelco,

ACDelco web site, https://parts-catalog.acdelco.com/acesCat.php#

https://www.ebay.com/itm/204139742992

https://www.amazon.com/GM-Genuine-19258789-Master-Cylinder/dp/B085S7D7V5

Neal

Last edited by legerwn; May 9, 2024 at 05:58 PM.

May 9, 2024 | 06:41 PM

#12

C57

Member

Joined: Jun 2021

Posts: 87

Quote:

Originally Posted by legerwn

I really appreciate the info. When I push down on the pedal it feels like the fluid is passing around the seals in the master cylinder. It just goes to the floor and then my h2 will just start rolling again. Unless I keep pumping it. Sounds like I'm going to have to get the credit card out $$$! Thanks for the help.

May 12, 2024 | 06:37 PM

#13

Gavin Costigan

Thread Starter

Senior Member

Joined: May 2020

Posts: 627

From: North GA

Quote:

Originally Posted by bora77

I just replaced the master brake cylinder assembly on my 2008 H2. What are the simple steps listed in the service manual to properly bleed the brake system?

Simple was not the right word lol. It’s a lengthy 3+hr process that can be found on the charm.li website

https://charm.li/Hummer/2008/H2%20V8...ke%20Bleeding/