my Genesis G70 shakes when I brake, what could be wrong?

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

504 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn to diagnose and fix shaking during braking in Genesis G70. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery when working on the braking system.
•Allow the brakes to cool before starting repairs.

Symptoms

•Vehicle shakes or vibrates during braking
•Pedal pulsation felt when applying brakes
•Possible noise during braking (squeaking or grinding)
•Uneven tire wear
•Pulling to one side while braking

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for wear and proper seating against the rotors.
3
Examine suspension components such as control arms and bushings for damage or wear.
4
Inspect wheel alignment and balance.
5
Check tire condition and pressure for any abnormalities.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Brake cleaner
•Socket set
•Torque wrench
•Dial indicator
•Jack
•Jack stands
•Safety glasses

Parts Required

•Brake rotors (if warped)
•Brake pads (if worn)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for wear and proper seating against the rotors.
3
Examine suspension components such as control arms and bushings for damage or wear.
4
Inspect wheel alignment and balance.
5
Check tire condition and pressure for any abnormalities.

Solution

1. Preparation

Gather tools and materials: Brake cleaner, socket set, torque wrench, dial indicator, jack, jack stands, and safety glasses.
Ensure the vehicle is parked on a level surface and the engine is off.

2. Remove Wheels

Loosen the lug nuts on the front wheels using a socket wrench.
Raise the front of the vehicle using a jack and secure with jack stands.
Remove the front wheels to access the braking system.

3. Inspect and Replace Brake Rotors (if warped)

Use a dial indicator to measure rotor runout. If runout exceeds manufacturer specifications, replace the rotors.
- Remove caliper bolts and slide caliper off the rotor.
- Remove the rotor by unscrewing any retaining screws or pulling off.
- Install new rotors, ensuring proper alignment.
- Torque rotor retaining screws to manufacturer specifications.

4. Inspect and Replace Brake Pads

Check the thickness of the brake pads. If they are worn below the minimum thickness, replace them.
- Remove the caliper bracket bolts to access brake pads.
- Slide old pads out and replace with new pads, ensuring they are properly seated.
- Reinstall caliper over new pads and torque bolts to specifications.

5. Inspect Suspension Components

Visually inspect control arms, bushings, and other suspension parts for wear or damage. Replace any faulty components.

6. Reinstall Wheels

Reinstall the front wheels and hand-tighten the lug nuts.
Lower the vehicle carefully from jack stands.
Torque lug nuts to manufacturer specifications in a crisscross pattern.