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  #1  
Old 07-06-2012, 07:57 AM
roman1978 roman1978 is offline
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2005 gtp lose of brakes
I was driving yesterday and noticed when i press the brakes the car tries to stop but then the pedal starts fading away and goes all the way back i tried pumping several times its even verse. I checked the fluid level looks normal no abs light what can this be. I have fairly new brakes in the front and old ones needed to be changed. I was shocked good thing i was not going fast. This happened after a an hour of driving and it was very hot in NY about 95 degrees. Please gide me in the right direction. I left the car home today did not want to take a chance driving it. Feels like a loss of pressure.
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Old 07-06-2012, 02:44 PM
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Re: 2005 gtp lose of brakes
Quote:
Originally Posted by roman1978 View Post
I was driving yesterday and noticed when i press the brakes the car tries to stop but then the pedal starts fading away and goes all the way back i tried pumping several times its even verse. I checked the fluid level looks normal no abs light what can this be. I have fairly new brakes in the front and old ones needed to be changed. I was shocked good thing i was not going fast. This happened after a an hour of driving and it was very hot in NY about 95 degrees. Please gide me in the right direction. I left the car home today did not want to take a chance driving it. Feels like a loss of pressure.
I understand that you're probably looking for DIY advice on this; if you decide to work with a dealership, please let me know as I would like to be available to assist in whatever way I can.

Regards,
Sarah
GM Customer Service
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Old 07-06-2012, 02:56 PM
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Re: 2005 gtp lose of brakes
If the pedal goes to the floor, and you are sure there is no fluid leak, then you have a bad master cylinder. Need to have the brake system checked for leaks, living in New York its very possible you have a rusted through brake line.
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Old 07-07-2012, 08:35 AM
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Re: 2005 gtp lose of brakes
Absolutely do not drive the vehicle......As GMtech1 said, if there are no EXTERNAL LEAKS, then it's probably a bad master cylinder
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Old 07-08-2012, 10:40 PM
roman1978 roman1978 is offline
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Re: 2005 gtp lose of brakes
it turned out to be a Master cylinder. Has anyone had any experiance with aftermarket ones or should i get an OEM GM one
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Old 07-09-2012, 06:51 AM
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Re: 2005 gtp lose of brakes
My experience is that you get what you pay for when it comes to master cylinders. I like to compare brake parts to a motorcycle helmet. If you have a 10 dollar head, buy a 10 dollar helmet! Get the OEM master.
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Old 07-09-2012, 07:43 AM
roman1978 roman1978 is offline
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Re: 2005 gtp lose of brakes
just orderd oem one
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Old 07-09-2012, 05:08 PM
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Re: 2005 gtp lose of brakes
GMtech1, can I borrow this one:

If you have a 10 dollar head, buy a 10 dollar helmet!
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Old 07-09-2012, 06:20 PM
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Re: 2005 gtp lose of brakes
Have at it, Tech II, enjoy!
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Old 07-26-2012, 10:58 AM
roman1978 roman1978 is offline
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Re: 2005 gtp lose of brakes
Update replaced a master cylinder and she is all good now
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