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Bleed Brakes

Bleed Brakes

Postby velocanman [OP] » May 03 2012, 2:53pm

Getting ready to change the front rotors and pads on my 06 Silverado Z71 with 120k miles.

It is pulsating under braking and sometimes locks up at slow speeds when I jam the pedal.

I probably should should flush the fluid and clean the ABS sensor while I'm in there. Anything else?

I have the large MityVac vacuum. Is there any advantage to using the pressure bleeder approach?

Thanks!
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Re: Bleed Brakes

Postby Gorecki » May 03 2012, 6:43pm

That bleeder system is just fine! More than fine frankly.

Based on your description be prepared to do caliper work/swap too! That pulsing is warpage and swapping out the pads and rotors may make it go away but if it starts to come back, certainly will need to replace/rebuild the calipers. ;)
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Re: Bleed Brakes

Postby velocanman [OP] » May 03 2012, 8:51pm

Thanks for the suggestion on the calipers. I will take a close look at them and consider replacement if braking performance is still degraded.
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Re: Bleed Brakes

Postby ASTE25 » May 04 2012, 12:47am

I had the same problem with the rotors warping on my 05. They were surfaced once under warranty and they warped again after the warranty expired. I just replaced the rotors and pads and have not had a problem since then (althought it's only been a few thousand miles).
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Re: Bleed Brakes

Postby velocanman [OP] » May 08 2012, 3:48am

Just a quick update. Changed the front pads and rotors this weekend. Cleaned the ABS sensor and bled the brakes enough to flush the front.

Still have some squeaking and pulsing so I guess a rear brake job is in my future. At 120k miles this doesn't seem unreasonable.

When I was bleeding the right front I had a slower flow than the left with steady bubbles. There isn't any obvious leaking, though.
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Re: Bleed Brakes

Postby Gorecki » May 08 2012, 4:12am

Usually the right line being farther away takes longer and is more prone to collecting crap, the rears will be even more.
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Re: Bleed Brakes

Postby EX-F150 owner » May 08 2012, 5:34am

velocanman wrote:Just a quick update. Changed the front pads and rotors this weekend. Cleaned the ABS sensor and bled the brakes enough to flush the front.

Still have some squeaking and pulsing so I guess a rear brake job is in my future. At 120k miles this doesn't seem unreasonable.


Did you lube the slid pins? How did you break in the new pads? Do you have drum or disc on the rear?
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Re: Bleed Brakes

Postby ricka182 » May 08 2012, 6:12pm

Gorecki...not trying to hijack.. but seeing we have the same truck, I figure I could ask about the ABS sensor. How difficult was it to clean? I've had my ABS screwed up for months because I've read that cleaning or changing is a pain in the ass, and I don't have the cash for quality new full assemblies with sensor included. I'd love to have my ABS back, or at least get that pump to stop pushing my foot off the pedal. I tried pulling the ABS fuse, but the dinging just drives me crazy in the morning..
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Re: Bleed Brakes

Postby Gorecki » May 08 2012, 8:55pm

ricka182 wrote:Gorecki...not trying to hijack.. but seeing we have the same truck, I figure I could ask about the ABS sensor.


Haven't done it on this truck, maybe the OP could give you some insight?
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Re: Bleed Brakes

Postby ricka182 » May 08 2012, 9:57pm

Doh! My bad. I mistook you for the OP.

Velocanman, see me my question above...any insight?
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