2000 GMC Safari Brake pulsates

2000 GMC SAFARI
120,000 MILES
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PETE92350
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  • 1 POST
When pressing on the brake pedal in the stop position with engine on, the brake pedal would pulsate/vibrate. What is the cause for the brake pedal to pulsate, i have already changed the brake booster n brake master cylinder?
Jul 4, 2013 at 9:44 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
Are you referring to a real rapid pulsation, almost like a buzz as the pedal also drops lower when coming to a stop?
Jul 4, 2013 at 10:20 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
Also, does this have a vacuum booster or hydro-boost?
Jul 4, 2013 at 10:25 PM
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