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The most likely cause is a warped rotor. It can also be other things so have you brakes and suspension inspected.
Possibly bad wheel bearing.
brakes that are dirty or worn out. also check your shock absorbers or springs. or a worn bearing
Check with a tire store and see if you need an alignment.
Most common cause of that is the rotors are out of round are warped. REPLACE ROTORS.
vacaum leak or bad throttle position sensor. gm Jim
You must apply a force towards the centre of the circle. This is called a centripetal force.
un equal adjustment of brakes will cause one brake to apply earlier and harder than other brake
first of all, the pads may be semi-metallic and have chunks of metal in them which may cause the squeal, change to a less metallic pad may help, also the backing of the pads should have an anti-squeal gel applied to them, when you apply the brakes, the pads will hyper vibrate and can cause a squeal. The gel will stop the vibrating. first of all, the pads may be semi-metallic and have chunks of metal in them which may cause the squeal, change to a less metallic pad may help, also the backing of the pads should have an anti-squeal gel applied to them, when you apply the brakes, the pads will hyper vibrate and can cause a squeal. The gel will stop the vibrating.
INITIAL ADJUSTMENT PROCEDURE Be sure parking brake lever is fully released. Fully apply the vehicles service brakes 2 to 3 times by depressing the brake pedal as far as possible. This will cause the automatic adjuster mechanism to correctly adjust the rear drum brakes. Apply and release the park brake lever one time after the service brakes have been correctly adjusted. This procedure has correctly adjusted the vehicle's rear service brakes.
Front wheel shudder could come from worn tires, bad brakes, or worn front end components. Check all of these to find the cause of the shudder.
bad ground on chassis. do the lights seem dim when you apply the brakes?