2007 Chevy Impala brakes pulsating on down hill only

Tiny
JAIME WOODS
  • MEMBER
  • 2007 CHEVROLET IMPALA
Brakes problem
2007 Chevy Impala 6 cyl Two Wheel Drive

When I am on a steep grade down hill the brakes start to pulsate. The more I use the brakes on a hill the worse it gets. I can feel it in the steering and the front end of the car. Durring braking on flat or slight hills there is no problems.
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Tuesday, September 30th, 2008 AT 8:44 PM

3 Replies

Tiny
TIMMAY2
  • MEMBER
That sounds like warped rotors. Google it you will see it common on these cars.

I have a 2007 LT, 3.9v6. It was sold as certified and had 26,000 miles when I noticed the brakes pulsating downhill. Also does it when stabbing them sharply from a high speed (ie emergency braking on highway, scary how bad it shakes!)

Customer care said to downgear instead! Dealer refuses to fix, says it's maintenance item and they never have seen another impala with the problem.

26,000 miles is way too early to need brake rotors replaced.

Please call Chevrolet customer care and log a complaint. 1-800-222-1020.

They dont seem to do anything, but the more public we make this, the sooner they fess up to shotty parts!
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Thursday, October 2nd, 2008 AT 11:00 PM
Tiny
SERGIO MURILLO
  • MEMBER
For a 2007 impala that shouldent be happening, (example)ill understand if its a 2000 impala cause maybe the emergency cables are more worn out, but a 2007, " SOMETHING "WAS NOT PROPERLY INSTALLED, go back to the dealer where u got it and get complete diagnastic. Please comply
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Saturday, October 4th, 2008 AT 10:39 PM
Tiny
JAIME WOODS
  • MEMBER
When this problem was brought to the dealer they said it was the rotor and they turned the rotor but the problem still presists. I was hoping to gain some insight as to any other problems prior to returning to the dealer so I had some leverage. I do not see where rotor warp could be the problem if this does not happen any other time but down hill. Could it be a ABS problem? I also think this could be a manufactuer problem with the rotor being too small for the weight of the vehicle when the vehicle is going down hill causing the weight of the vehicle to be more than on a flat breaking surface.
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Sunday, October 5th, 2008 AT 7:36 PM

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