2004 Pontiac Montana Logo
Posted on May 18, 2010
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I have a 2004 montana and the brakes feel like they are not working (pulsating) from time to time. The Van stops OK, the best way to describe it is like squeezing and releasing a water hose as water is running through it. I replaced the brake pads, and both front rotors. The fluid level is fine and after this happens the ABS light comes on.

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Mark Lewis

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  • Posted on May 18, 2010
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The "pulsating" you refer to is Normal for a vehicle with ABS (Anti-Lock Brake Systems). It keeps the vehicle braking in a straight line and monitors each wheel with a sensor as to how fast it's turning while braking. The "pulsations" you feel is the ABS Computer turning each individual brake on and off to prevent a lock-up or skid. Perhaps if you road test the vehicle and apply your brakes lightly as in coming up on a stop sign in a residential neighborhood, you'll feel what you consider to be, "normal braking." Pulsations usually come at higher speeds and as to how much pressure you're putting on the brake pedal. You're safer than most now knowing that braking, even in snow, rain or gravel, that your vehicle will stop in a straight line instead of sliding to one side or the other.

If unhappy with ABS Braking, you can always remove the fuse to the ABS computer rendering it inoperative, so you have both choices as to what you'd like to do, right here.

I hope this helps,

~00 Buck~

"Still Living on the Right Side of Dirt..."

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I could be that one of you brake lines is deteriorating, or rotting, and is plugging the line. Squeeze each line to learn if one of them is soft. I have seen a line plug entirely from this. Otherwise a scanner for you brake system will be in order. Good Luck Darrell S

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OKAY I REPLACED BOTH ROTORS AND BRAKES ON MY 2008 CHEVY IMPALA BECAUSE I HAD A VERY BAD BRAKE PEDAL PULSATION WHEN I TRY TO STOP. IT WENT AWAY PRETTY MUCH ONLY FELT IT.

Can you also you feel the pulsation in the steering wheel or the body of the car? If it is in the steering wheel then recheck the work that you did. Make sure that the hubs are clear of rust and torque the wheel nuts when putting the tires on.
To check if the rear are bad you can while driving down the road, lightly apply the emergency brake. If you feel the pulsation in the body then it is the rear brakes.
One last test that I have done is clamp off one brake caliper at a time using a clamp on the rubber line and seeing where the pulsation is coming from. Also if the antilock system is engauging there will be a pulsation in the pedal.
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What could be the problem.. my 2007 montana van gets stuck for a few seconds and sometimes vibrates like the wheels locked as i step on the gas pedal and drive.. i could be in park and step on the brake...

if you are getting a grinding sound or feeling then your brakes lining is gone and you are down to the metal. you need to fix this asap the longer you drive and use the brakes the more damage you are doing to the rotors.
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I have a 2004 alero and when I press on the brakes to stop at a red light or stop sign a vibration occurs and it's loud but when I put it in park it stops vibrating. What can I do about this problem?

Sounds like you have warped rotors and or a lose caliper mounting bolt . When you stop do you feel a vibration in the brake peddle or in the steering wheel or both ? IF you feel the pulsation in the brake peddle I would suspect a brake pad / brake rotor problem . Now if you do not feel it in either and the vibration is through the whole car with out the brakes being applied i would think it may be related to and engine/drive line problem (motor mount /trans mount /axle problem)
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1. brakes seem to pulse when comming to a stop (feels like ABS working very slowly)

The pulsation you feel is caused by warped front brake rotors. You will need to replace the rotors and it would be smart to change the front pads at the same time.
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2004 Pontiac Montana Brake Lights, Pwr Window and Cruise all Quit

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Jerks while applying brakes

Yes if they are replacing both rotors and pads with premium parts.
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Or you could just pull the fuse for the abs and not have abs but you won't wreck from pulsating pedal.
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That is just the ABS system at work. It is supposed to prevent your wheels from locking which often makes the brake pulsate, especially in wet weather or or snow or ice. The only way to really stop this is to disable to ABS by unplugging it and removing the fuse. This will make the ABS light appear in your dash, but your brakes will stop pulsating.
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