how to fix GMC Sierra T1XX (2019-Present) that shakes when I accelerate?

GMC Sierra T1XX (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

497 words

Problem Statement

Learn how to diagnose and fix shaking during acceleration in GMC Sierra T1XX. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely lifted and supported before working underneath.
•Allow the vehicle to cool down before beginning any work related to the engine or drivetrain.

Symptoms

•Vibrations felt in the steering wheel and/or through the seat during acceleration
•Shaking intensifies with increased speed
•Noises accompanying the shaking, such as clunking or grinding
•Uneven tire wear or visible damage to tires
•Possible check engine light illumination (if related to engine misfire)

Diagnostic Steps

1
Inspect the tires for any visible damage, uneven wear, or improper inflation.
2
Perform a wheel balance check to ensure all wheels are properly balanced.
3
Inspect the driveshaft for any signs of wear, damage, or misalignment.
4
Check for any worn or damaged suspension components, including control arms and bushings.
5
Scan for error codes using an OBD-II scanner to identify any potential engine or transmission issues.
6
Test drive the vehicle to replicate the shaking and determine if it correlates with specific speeds or conditions.

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

•OBD-II scanner
•Socket set
•Torque wrench
•Wheel balancer

Parts Required

•Tires (if replacement is necessary)
•Driveshaft (if replacement is necessary)
•Suspension components (if replacement is necessary)

Related Faults

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Symptoms

•Vibrations felt in the steering wheel and/or through the seat during acceleration

•Shaking intensifies with increased speed

•Noises accompanying the shaking, such as clunking or grinding

•Uneven tire wear or visible damage to tires

•Possible check engine light illumination (if related to engine misfire)

Diagnostic Steps

1
Inspect the tires for any visible damage, uneven wear, or improper inflation.
2
Perform a wheel balance check to ensure all wheels are properly balanced.
3
Inspect the driveshaft for any signs of wear, damage, or misalignment.
4
Check for any worn or damaged suspension components, including control arms and bushings.
5
Scan for error codes using an OBD-II scanner to identify any potential engine or transmission issues.
6
Test drive the vehicle to replicate the shaking and determine if it correlates with specific speeds or conditions.

Solution

1. Tire Inspection and Replacement

Inspect Tires: Check for bulges, cracks, or uneven wear.
Replace Tires (if necessary):
- Remove the wheel using a socket set.
- Install new tires and ensure proper alignment and balancing.

2. Wheel Balancing

Balance All Wheels:
- Remove each wheel and tire assembly.
- Place the assembly on a wheel balancer.
- Add weights as needed to achieve balance.
- Reinstall the wheels on the vehicle.

3. Driveshaft Inspection and Repair

Inspect Driveshaft:
- Visually inspect for any signs of damage or misalignment.
Repair/Replace Driveshaft (if necessary):
- Remove the driveshaft from the vehicle using a socket set.
- Replace any damaged components or the entire driveshaft if severely worn.
- Reinstall the driveshaft and torque bolts to manufacturer specifications.

4. Suspension Component Inspection and Replacement

Inspect Suspension:
- Check control arms, bushings, and shock absorbers for wear or damage.
Replace Worn Components (if necessary):
- Remove the affected components using a socket set.
- Install new parts and ensure they are properly torqued to specifications.