why does my Genesis G70 shake when I brake hard

Genesis G70 1st Gen (2018-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

492 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 how to diagnose and fix brake shaking issues 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

•Allow the vehicle to cool before working on the brake system.
•Always use jack stands when lifting the vehicle for safety.

Symptoms

•Steering wheel shakes during hard braking
•Vibration felt in the brake pedal
•Pulsation in the brake system
•Uneven tire wear
•Potential squeaking or grinding noise from brakes

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear.
2
Check brake pads for wear and proper installation.
3
Verify wheel alignment and balance.
4
Examine suspension components for damage or wear (e.g., control arms, bushings).
5
Use a dial indicator to measure rotor runout.
6
Inspect tires for any defects or uneven wear patterns.

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

•Socket set
•Torque wrench
•Dial indicator
•C-clamp
•Brake cleaner
•Lug wrench
•Alignment machine (if available)
•Wheel balancer
•Wrench set
•Jack and jack stands

Parts Required

•Brake rotors
•Brake pads
•Any necessary suspension components (if worn)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear.
2
Check brake pads for wear and proper installation.
3
Verify wheel alignment and balance.
4
Examine suspension components for damage or wear (e.g., control arms, bushings).
5
Use a dial indicator to measure rotor runout.
6
Inspect tires for any defects or uneven wear patterns.

Solution

1. Preparation

Gather tools and parts for the repair.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the battery for safety.

2. Inspect and Replace Brake Rotors

Tools Required: Socket set, torque wrench, brake cleaner.
Remove the wheel using a lug wrench.
Inspect the rotors for warping or uneven wear using a dial indicator.
If rotors are warped, remove them using a socket set. Clean the hub surface with brake cleaner.
Install new rotors, ensuring they are properly seated. Torque the rotor bolts to manufacturer specifications.

3. Inspect and Replace Brake Pads

Tools Required: C-clamp, brake grease.
Remove the caliper using a socket set and lift it out of the way (do not disconnect brake lines).
Remove old brake pads and inspect for wear.
Install new brake pads, applying brake grease to the contact points.
Reattach the caliper and torque the bolts to specifications.

4. Wheel Alignment and Balancing

Tools Required: Alignment machine (if available), wheel balancer.
Check alignment settings and adjust as necessary.
Balance the wheels using a wheel balancer to ensure even tire wear.

5. Inspect Suspension Components

Tools Required: Wrench set, jack and jack stands.
Lift the vehicle and inspect suspension components for wear or damage.
Replace any worn components, such as control arms or bushings, following manufacturer specifications.