recently my brakes has been acting weird. sometime when i press the brake i feel the pedal vibrating. and it sound like a spring is banging against the car. it would best be describe as an 'abs' feeling (when abs is engage). my brake fluid are full. No abs, vdc lights comes on when it is happening. I want to ask if any of you guys have an idea of what it might be? Im planning on checking the brake pads this weekend also.

another question: where is the best place to jack up the car that both front tires are up at the same time?

..I want to ask if any of you guys have an idea of what it might be? Im planning on checking the brake pads this weekend also.
Could it be warped rotors???


another question: where is the best place to jack up the car that both front tires are up at the same time?
Richard, there's really not one, 3,000-ish pounds on a thin-walled box cross frame is too much to be safe doing that with... I have jacked up at the front cross bracket and watched the bracket begin to bow and the truck becomes VERY unstable.... It's flat out dangerous IMHO, and even if that cross bracket were strong enough, our rear suspension is too soft to hold it steady on a front single pivot point. A Solid Front Axle would likely be a different story...

Stay safe man and jackstand one side at a time, the extra time for safety is well worth it. :D

FWIW, I removed my 3rd crossmember as part of the lift install and it's sitting in a box... It's very lightweight and flimsy...

Bob if its a warp rotors wouldnt it do it all the time? if its the rotors the whole car would shake, no? this is just my foot. im lost. i hope its nothing major.

That is weird.... If it were rotors, the steering wheel would shake when stopping... Does the pulsation change with your speed, like slows as you slowdown, or does it stay consistant regardless of speed???

it doesnt matter about the speed. i noticed it usually on rough roads or before a speed bump. Before as before i go over the bump.

:confused: OEM Shocks??? or possibly an ABS sensor going bad??

Does the attached thread sound similar to what you are experiencing?

http://www.clubarmada.com/forums/showthread.php?t=15260

I sometimes have the same problem, I took it to the dealer and they said the brake booster needs to be replaced. I havent done it yet as mine only "acts up" every 5 or 6 months or so.

Does the attached thread sound similar to what you are experiencing?

http://www.clubarmada.com/forums/showthread.php?t=15260

yeah but mine doesnt do when backing out, yet =/ hopefully never. and i dont have any light warning. it just happen. did you get it fixed? if so what did you do? im going to check the brakes myself also. Im also due for an 80K miles maintenance i guess i can have them look it also. $$$$$$ flying out the windows. :(

I sometimes have the same problem, I took it to the dealer and they said the brake booster needs to be replaced. I havent done it yet as mine only "acts up" every 5 or 6 months or so.

how much is that? mine acts up once awhile but it progressively getting more frequent.

I was quoted between $530-$550 for parts and labor. to have the brake booster replaced.

They said it was common for this part in the booster to go bad.

Let me know what you find out on your problem.


Thanks, Robbie

Update on my brake vibration. They initially stated it might the booster since its a common issue they are seeing they said. But they said there was no code on the cpu to state it was that. Instead they said it was the right side RF sensor is bad which is causing the misreading to the cpu. that cost 390 to fix parts and labor. part was 130.

Also i posted a question regarding my SES lights being on with code P0174 stating the system is running lean. The cause they said was my dirty CAI =/ they did clean the air sensor since a little dirty did passed through the filter. Now i have to clean the filter itself. They wanted 125 to clean my filter...i kindly declined. So no more SES lights. And i need to clean the filter quick before it happens again. =/

Have the dealer check the ABS/VDC controller for DTC C1179. If the code is there, the controller must be reprogrammed.

Have the dealer check the ABS/VDC controller for DTC C1179. If the code is there, the controller must be reprogrammed.

They did and said the code wasnt there so there was no need to reprogram the controller.

I just experienced the brake thing for the first time today. When I apply brakes, it starts to click, spring noises, pulsate, and feel like abs is kicking in. Then when I restarted engine, it went away.

I'm going to top off brake fluid for now to see if it comes back.

I just experienced the brake thing for the first time today. When I apply brakes, it starts to click, spring noises, pulsate, and feel like abs is kicking in. Then when I restarted engine, it went away.

I'm going to top off brake fluid for now to see if it comes back.

Andy,

Topping off the brake fluid is never a good idea. If your brake fluid is low it is likely an indication of worn pads (the piston extends as the pad material wears, thereby lowering the fluid level). If the pads are not worn it could be a leak.

The other issue is when you go to compress the caliper piston when putting on new pads the topped off fluid will gush all over the place and is corrosive to painted surfaces. This happened to me as apparently some yahoo at the service department topped it off without telling me and I had it dripping down all over the place when I recently replaced the pads and rotors.

All - To those of you who have had this issue have you been bleeding your brakes regularly? I do mine every year or two as reccomended - the fluid is hydroscopic so it will pull mositure out of the air and cause a soft peddle and potential issues with other components.

Andy,

Topping off the brake fluid is never a good idea. If your brake fluid is low it is likely an indication of worn pads (the piston extends as the pad material wears, thereby lowering the fluid level). If the pads are not worn it could be a leak.

The other issue is when you go to compress the caliper piston when putting on new pads the topped off fluid will gush all over the place and is corrosive to painted surfaces. This happened to me as apparently some yahoo at the service department topped it off without telling me and I had it dripping down all over the place when I recently replaced the pads and rotors.

All - To those of you who have had this issue have you been bleeding your brakes regularly? I do mine every year or two as reccomended - the fluid is hydroscopic so it will pull mositure out of the air and cause a soft peddle and potential issues with other components.

Good advice. I'll go check my pads to see if they're worn down. But after topping it off, no more spring noises. And I better get fluid changed too.

Good advice. I'll go check my pads to see if they're worn down. But after topping it off, no more spring noises. And I better get fluid changed too.

Even after a year changing the fluid makes a world of difference in peddle feel. Much firmer :cool:

I have been having these problems off nd on for some time now.

Seems like the problem is exactly what everyone else is reporting.

pedal vibrating. soundw like a spring is banging, rough irregular pulsing of the pedal, and the pedal feels like it is going to sink to the floor as the sound and pusling gets worse.

If I pull to a stop and press the pedal in park I get the same sensation.

I can "reboot" the truck all is well.

Does anyone know if the DTC C1179 code is there only while the problem persists or will the code stay in the system forever?

Thanks

I have been having these problems off nd on for some time now.

Seems like the problem is exactly what everyone else is reporting.

pedal vibrating. soundw like a spring is banging, rough irregular pulsing of the pedal, and the pedal feels like it is going to sink to the floor as the sound and pusling gets worse.

If I pull to a stop and press the pedal in park I get the same sensation.

I can "reboot" the truck all is well.

Does anyone know if the DTC C1179 code is there only while the problem persists or will the code stay in the system forever?

Thanks
Actually sounds like you are having the bigger problem that many people are having. search for brake booster and class action lawsuit