Having problems with your 2003 Chevrolet Impala ?
Steering wheel shakes when brake is applied - 2003 Chevrolet Impala
Check the tires for knots or lumps, remove tire and wheel check brake pad and brake rotor. sounds like its either a brake problem or a tire problem.
This problem is caused by the disk brake rotors being out of true, to have this fixed you either replace them or have them machined flat again.
Repair Help & Product Troubleshooting for 2003 Chevrolet Impala
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