Question about Cars & Trucks
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Posted on Jan 02, 2017
You could have a vacume leak. If so your engine will probably be idleing rough. Check the hose coming off the booster going to the engine.
Posted on Jul 05, 2009
I think I would be looking at the vacuum booster for the brakes having a leak. Block off the vacuum line and try the brakes again. Make sure you have lots of room to stop. If the booster is bad then the pedal will still be hard but the RPM's and hissing should go away. Hope this helps.
Posted on Oct 12, 2009
check under your master cylinder,is there another clyinder below with one line in and one line out,if you do I found this is for the Abs to the rear,I had to replace this it was full of air,and did exactly what yours is now
Posted on Dec 09, 2009
Hey do-it your-selfer are your brakes O.K. Do you have to push youpedal down "real hard to the floor" after you hung all these parts on your Yukon! If so check to make sure the vacuum line is hooked up to the booster. Anyway the brake switch itself is not that hard. You can remove a panel under the steering column to get more room. Pull the switch up from the brake pedal bracket till it comes out. Install the new one, connect the wires. If you push it in to far, put both feet under pedal and gently pull up, you'll hear it set itself. Have someone check brake lights while you step on pedal. Good luck, best regards.
Posted on Feb 01, 2011
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