95 brake booster

mbrown · 04-30-2007, 11:43 AM

Hey guys,
I believe my brake booster is out. how do I test to make sure its bad before I purchase and install a new one. Plus I hear its a bear to change out the old ones. Something like tearing into your dash and steering column. Can anyone advise.

TIA Marcus.

jktuck · 04-30-2007, 12:10 PM

Hey, I had to change the booster on my wife's 99 GMC Jimmy. I suspected it was bad because of the loud air sound under the dash whenever the brakes were on. It is an experience to say the least, but if you give yourself enough time and patience you can do it. Of course the hard part is working thru all the **** under the dash. Good luck!

mudseeker · 04-30-2007, 03:06 PM

with the truck off pump the brake until you get a hard pedal. then hold the pedal firmly while you start the truck. when the truck starts the pedal should only drop slightly if the booster is good. also it could be something more simple than the booster, it could be a bad check valve or a collapsed vacuum hose.

mbrown · 04-30-2007, 04:05 PM

Ready good advice I will double check everything before I buy the booster. What is the check value do you have a part number for it.

mudseeker · 04-30-2007, 07:13 PM

the check valve is the L shaped connection on the hose that connects to the booster.

04-30-2007, 11:43 AM	#1
mbrown Junior Member Join Date: Apr 2007 Posts: 2	95 brake booster Hey guys, I believe my brake booster is out. how do I test to make sure its bad before I purchase and install a new one. Plus I hear its a bear to change out the old ones. Something like tearing into your dash and steering column. Can anyone advise. TIA Marcus.

04-30-2007, 12:10 PM	#2
jktuck Senior Member Join Date: Oct 2006 Posts: 77	everyone needs to do it once. Hey, I had to change the booster on my wife's 99 GMC Jimmy. I suspected it was bad because of the loud air sound under the dash whenever the brakes were on. It is an experience to say the least, but if you give yourself enough time and patience you can do it. Of course the hard part is working thru all the **** under the dash. Good luck! __________________ Jeff Tuck ( me likes me some GMs ) 1968 Chevy C10 straight 6 1989 Chevy S10 v6 4.3 1994 Chevy Silverado Z71 4X4 v8 5.7 1999 GMC Jimmy v6 4.3

04-30-2007, 03:06 PM	#3
mudseeker mod-o-tator Join Date: Feb 2006 Location: michigan Posts: 4,525	with the truck off pump the brake until you get a hard pedal. then hold the pedal firmly while you start the truck. when the truck starts the pedal should only drop slightly if the booster is good. also it could be something more simple than the booster, it could be a bad check valve or a collapsed vacuum hose. __________________ member map add yourself alldatadiy why is it, when i push one for english, i still can't understand the person on the other end?

04-30-2007, 07:13 PM	#5
mudseeker mod-o-tator Join Date: Feb 2006 Location: michigan Posts: 4,525	the check valve is the L shaped connection on the hose that connects to the booster. Attached Thumbnails __________________ member map add yourself alldatadiy why is it, when i push one for english, i still can't understand the person on the other end?

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04-30-2007, 04:05 PM	#4
mbrown Junior Member Join Date: Apr 2007 Posts: 2	Ready good advice I will double check everything before I buy the booster. What is the check value do you have a part number for it.

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