2004 Pontiac Grand Prix car shakes

2004 PONTIAC GRAND PRIX
194,000 MILES • 6 CYL • FWD • AUTOMATIC
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M13
  • MEMBER
  • 1 POST
car shakes when driving and feels like the brakes are on
Jan 10, 2015 at 3:22 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,308 POSTS
Could use a lot more detail than that. Stop on a slight incline, release the brakes, and see if the car creeps downhill on its own. If not, the brakes could indeed be sticking and that will cause a pulsation in the brake pedal and a shimmy in the steering wheel. GM hasn't had much trouble with sticking brake calipers, so my first suspicion would be contaminated brake fluid. Any chance the slightest hint of a petroleum product got in the fluid? That could include engine oil, power steering fluid, transmission fluid, or axle grease. Check if the rubber bladder seal under the reservoir cap is blown up and mushy.
Jan 10, 2015 at 3:46 PM
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