my GMC Sierra T1XX (2019-Present) shakes when braking, what's wrong?

GMC Sierra T1XX (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

464 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 shaking when braking in GMC Sierra T1XX (2019-Present). 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 wear safety glasses and gloves when working on brake components.
•Ensure the vehicle is securely lifted before working underneath.

Symptoms

•Steering wheel shakes during braking
•Vibration felt in the brake pedal
•Uneven brake pad wear
•Pulsation in the brakes
•Noise while braking (squeaking or grinding)

Diagnostic Steps

1
Inspect the front and rear brake rotors for warping or damage.
2
Check the brake pads for uneven wear or contamination.
3
Examine wheel bearings for excessive play or wear.
4
Inspect suspension components (control arms, bushings, etc.) for damage.
5
Verify tire balance and alignment.

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

•Jack and jack stands
•Socket set
•Torque wrench
•Dial indicator (for rotor inspection)

Parts Required

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

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Ensure the vehicle is cool to avoid burns.

2. Raise the Vehicle

Use a jack to lift the front of the vehicle and secure it on jack stands.
Remove the front wheels using a socket set.

3. Inspect Brake Components

Brake Rotor Inspection:
- Remove the brake caliper by unscrewing the caliper bolts.
- Slide the caliper off and hang it without straining the brake line.
- Remove the rotor and check for warping using a dial indicator or visual inspection.
- If warped, replace with new rotors. If not, clean the rotor surface.
Brake Pad Inspection:
- Inspect the brake pads for uneven wear or contamination.
- Replace worn or damaged brake pads as needed.

4. Check Wheel Bearings and Suspension

Wheel Bearing Check:
- Spin the wheel hub and feel for roughness or play.
- If defective, replace the wheel bearings.
Suspension Inspection:
- Check control arms, bushings, and tie rods for any signs of damage or excessive wear.
- Replace damaged components if necessary.

5. Reassemble and Test

Reinstall the brake rotor and caliper, ensuring all bolts are torqued to manufacturer specifications.
Reattach the wheels and lower the vehicle.
Test drive to assess the effectiveness of the repair.