01-10 Hydroboost (Brake Booster) Fix & Upgrade

Duramax Hydroboost Fix & Upgrade Mod
 

Anybody with the 01-10 Duramax 2500HD or 3500HD knows the very common issue of the hydro-boost going bad along with the Power Steering Pump. If left long enough it does have the potential to take out your power steering pump as well. 

Fix: Instead of going back with a 01-10 gm model hydroboost (if you do, then go back with ac Delco) go ahead and put a 2011 LML hydroboost back in its place. the 01-04 trucks will need a slight modification to fit it, this entails drilling a bigger hole in the pin. Outside of that, it's a direct bolt-on. 

Reason: The 2011s were upgraded internally, and if you've ever driven an lml you can tell the brakes are much better and don't have that "spongey" feel to them. It's a direct bolt-on and will work on the older system.

Also while you're doing the hydro-boost and you're worried about the power steering pump, then now is the time to do both while you're in there. I would go back with new lines as well (stainless if you wanna go high-end) and flush the system first with ATF fluid. Then go back with either your standard PS fluid, or I like the full synthetic option myself. I repeated this 2 times or so to get good clean fluid. It's also a common issue to have leaky hydroboost lines going to the PS pump so watch for those as well. 

*NEW AC DELCO PART # 1781036

https://injectedmotorsports.com/gm-hydroboost-2011-lml-duramax-25003500hd

*Upgraded Power Steering Pump from PSC Steering (LINK) -https://injectedmotorsports.com/high-performance-power-steering-pump-2001-2010-gm-duramax-with-hydroboost-braking-system-psc-performance-steering-components-3

BAD PS Pump & Hydroboost 

Hope this helps, and I'll post a video of what a bad hydroboost and power steering pump sound like. Thanks for viewing!