violent shake in front end when braking

2003 CHEVROLET MONTE CARLO
200,000 MILES • 3.8L • 6 CYL • FWD
Avatar
TRACI LINXWILER
  • MEMBER
  • 9 POSTS
have replaced all suspension and brake components on front, yet car still shakes when braking. was told could be ABS system? checked new rotors less than .002 out. what else?
Nov 21, 2016 at 3:36 PM
Advertisement
Avatar
JIS001
  • CERTIFIED EXPERT
  • 3,412 POSTS
Do you have after market wheels?
Nov 21, 2016 at 3:41 PM
Avatar
TRACI LINXWILER
  • MEMBER
  • 9 POSTS
no, factory.
Nov 21, 2016 at 4:36 PM
Advertisement
Avatar
JIS001
  • CERTIFIED EXPERT
  • 3,412 POSTS
If you have drum brakes apply the parking brake and see if you notice the vehicle shake. If it does then you will need to have the drums turned or replaced. If you replace the drums then have the new ones turned also. I have seen with most aftermarket drums I end up having the vehicle come back because they are warped.

If it is okay then have the rotors resurfaced just to make sure they are not warped.
Nov 22, 2016 at 10:56 AM
Avatar
TRACI LINXWILER
  • MEMBER
  • 9 POSTS
rotors are new and checked with dial indicator myself. less than .002 out
Nov 22, 2016 at 11:19 AM
Avatar
JIS001
  • CERTIFIED EXPERT
  • 3,412 POSTS
What about the question about having drums?
Nov 22, 2016 at 3:33 PM
Avatar
TRACI LINXWILER
  • MEMBER
  • 9 POSTS
rotors front and back.
Nov 22, 2016 at 4:24 PM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,871 POSTS
Hey Traci,

I would rotate the tires front to back, I have seen where the tire layers separate which causes the shaking sensation under braking.

Please let us know happens so it will help others.

Best, Ken
Nov 22, 2016 at 6:22 PM
Avatar
TRACI LINXWILER
  • MEMBER
  • 9 POSTS
unhooked the speed sensor wires on both front hubs and shaking has stopped. apparently it is something in the abs system
Nov 23, 2016 at 4:42 AM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,871 POSTS
Nice work, never seen that problem before.

Best, Ken
Nov 23, 2016 at 11:31 AM