Car shakes when braking

2006 PONTIAC GRAND PRIX

116,000 MILES • 6 CYL • AUTOMATIC

SHAWNALFREY

MEMBER
19 POSTS

I have an issue. I just recently noticed that when driving at speeds of 50-80 mph and when i brake i get a vibration shaking in the front end. I was told by Advance Auto my brakes and rotors are fine and Firestone says without looking that my rotors they are warped. I do not know who to believe. The guy trying to save me money or the one trying to take my money. It only happens at high speeds. I drive locally it seems to be fine, but when i come to a stop i can actually hear some kind of rubbing with the brakes.

Jun 6, 2016 at 5:27 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

Usually that is caused by front rotors being warped. Can you feel it in the steering wheel at all? Have the brakes been inspected?

Jun 6, 2016 at 6:43 AM

SHAWNALFREY

MEMBER
19 POSTS

Somewhat feel in steering and sometimes it feels to pull a little. I have not really had the brakes looked at, but just had tires re-balanced and rotated. Two of them were out of balance. I getting ready to take a ride on freeway to see if that helped any..

Jun 6, 2016 at 6:55 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

An out of balance tire will not cause a vibration while braking. More than likely your front rotors are warped.

Jun 6, 2016 at 12:14 PM

SHAWNALFREY

MEMBER
19 POSTS

im getting rotors today and brakes. dont know why the guy at advance auto told me that. i usually get really good advice from them. thank you saturntech9 hoping this fixes my problem

Jun 7, 2016 at 8:05 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

Sometimes a auto parts store isn't the best place to get advice.It will vary from employee to employee some good some bad.

Jun 7, 2016 at 9:37 AM

SHAWNALFREY

MEMBER
19 POSTS

Yea i know, this guy didnt even want me to purchase a jack there. Told me to go to harbor freight. So that i did. And it is my left rotor, just cant get the dang bolts out to change it.

Jun 10, 2016 at 2:44 AM

SATURNTECH9

✓ASE Certified Mechanic
30,869 POSTS

The jacks at harbor freight are cheaper.I got there little 2 ton trolly Jack there like Atleast three years ago.I use it for my travel Jack my big 3 ton Jack is too heavy to travel with.Let me know how it goes.

Jun 10, 2016 at 9:58 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.