Question about 2003 GMC Sierra 1500

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Truck shimmies when brakes applied

When I apply the brakes the truck shakes and I can feel pulsing in the brake pedal.

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  • GMC Master
  • 14,337 Answers

Check your brake rotors,are they worn even and no worn marks.When replacing,do both.

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

KCGTODAD
  • 169 Answers

SOURCE: Front end shakes when brakes are applied..

Your rotors are warped. When you had your brakes replaced - did they just replace the pads? Did they "turn" the rotors - or replace them? It isn't very expensive to have them turned - which means they will resurface them - removing any high spots. One thing to note - by law, the rotors have to be a specific minimum thickness - if by turning them, they would become too thin - they won't (shouldn't) do it. They will put calipers on them to determine the current, and end result of the thickness and let you know before then actually do the work.

Also - it wouldn't hurt to double check that all of the lug nuts are tightened to 100 ft/lbs on all 4 wheels.

Hope this helps and good luck!

Posted on Sep 24, 2009

  • 653 Answers

SOURCE: steering shimmy when brakes applied

It sounds like either warped rotors or grease/oil on the pads. Jack up the front and pull the wheels off. Turn the rotors by hand to see if the rotors turn freely, then drag, then turn freely. If there is no grease or oil on the rotor surfaces, you need to either turn or replace the rotors. The job is a royal pain in the ****, so you may want to take it to a reputable shop.

Posted on Apr 04, 2009

  • 2926 Answers

SOURCE: Truck shakes when brake is

A common cause for the vibration when braking is when front brake pads are replaced, but the brake rotors were not resurfaced smooth. Overtime when braking, the new pad will wear into the rotor that was not cut. The uncut rotor, having high and low spots when turning, will cause the brake pedal to vibrate/pulse when stopping.

Posted on Sep 16, 2011

SOURCE: Shake in steering wheel

what can likely cause shaking of steering.
1)-if the tyre is not at equal guage.
2)-15 xterra tyre rim is the best that came with the car.
3)- may be one tyre is bigger than another.
4)-sudden force apply of brake can cause it check brake pad.

BY ABOYADE OLUTAYO
PHONE NO 234-7054969173
BB PIN 30498F02, BB NAME PROPHECT EENDOW

Posted on Jan 25, 2012

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