First, make sure what kind of fluid it is, as it could be either brake fluid from the MC, or power steering fluid from the hydroboost.

Second, there should be NO fluid at that junction, putting a gasket there would just mask the problem. Something has failed inside the MC or the hydroboost. From working on my truck, I couldn't find any sort of rebuild kit for the MC, so needed to buy a replacement for it, and while there are rebuild seal kits for the hydroboost, from reading the instructions, to do it right, you need to cut/replace parts that the kits don't include, and that aren't readily available (at least that I could find), so again, replaced it.

 

If it’s the hydro boost leaking it will be power steering fluid. Check the power steering reservoir for low fluid level. A place to start anyway.

 

I helped my friend fix a leaking hydro boost on his Suburban. Fixed it with this one seal. The toughest part is getting the unit out of the vehicle. PITA up under dash work. Then you need reverse torx sockets to break the unit open and get to that seal. You don’t need to loosen any brake lines. Just unbolt the master and move it forward with the lines still attached. I think I remember also needing crows foot socket wrenches to get the hydraulic lines loose from the hydro boost unit.

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10/4, thanks for the advice, ill probably get to work on it tomorrow or this weekend. Thanks again.

 

Determined thats its definitely power steering fluid. Checked my reservoir and it was low, got called in to work this weekend so I won't be turning any wreches this weekend. Is my truck ok to drive like it is? As long as I keep power steering fluid in it? Or is it an accident waiting to happen? Thanks

 

It should work fine if you keep the fluid level from getting too low. Usually the first symptom of fluid too low will be growling from the pump when you turn the wheel. Followed by slight binding in the steering when turning the wheel.

That’s how it was with my friends Suburban anyway. It never showed symptoms in the braking, only steering symptoms when fluid got low. His was leaking pretty bad and had been for a while.

 

10/4, thanks, I filled the power steering pump and got an extra bottle if I need it. My brakes did start acting funny about every 5th good press on the brake pedal. Thanks for the advice, ill get it sorted soon when I get a day off.