how to replace worn out shocks on my GMC Sierra T1XX (2019-Present)

GMC Sierra T1XX (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to replace worn out shocks on your GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostic steps, and tools required.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under a vehicle.
•Ensure the vehicle is on a flat, stable surface before lifting.

Symptoms

•Excessive bouncing after hitting bumps
•Vehicle swaying or leaning during turns
•Increased stopping distance
•Fluid leakage from the shock absorbers
•Uneven tire wear

Diagnostic Steps

1
Inspect the shocks visually for signs of wear, damage, or fluid leaks.
2
Perform a bounce test by pushing down on each corner of the vehicle and observing how many times it rebounds.
3
Check for any error codes using an OBD-II scanner that may relate to suspension issues.
4
Assess the condition of the tires for uneven wear patterns indicative of suspension problems.
5
Verify shock mount nuts for tightness and overall stability.

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

•Hydraulic jack
•Jack stands
•Socket set (metric)
•Torque wrench
•Wrench set
•Safety glasses
•Gloves

Parts Required

•Front shock absorbers (2)
•Rear shock absorbers (2)

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Diagnostic Steps

1
Inspect the shocks visually for signs of wear, damage, or fluid leaks.
2
Perform a bounce test by pushing down on each corner of the vehicle and observing how many times it rebounds.
3
Check for any error codes using an OBD-II scanner that may relate to suspension issues.
4
Assess the condition of the tires for uneven wear patterns indicative of suspension problems.
5
Verify shock mount nuts for tightness and overall stability.

Solution

1. Preparation

Gather required tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Wear safety glasses and gloves.

2. Raise the Vehicle

Use a hydraulic jack to lift the vehicle at the designated lift points.
Secure the vehicle with jack stands for safety.

3. Remove the Old Shocks

Front Shocks:
1. Remove the wheel for access.
2. Locate the upper and lower shock bolts.
3. Use a socket wrench to remove the upper bolt first, followed by the lower bolt.
4. Carefully take out the shock absorber.
Rear Shocks:
1. Similarly, remove the rear wheel.
2. Locate and remove the upper and lower shock bolts using a socket wrench.
3. Remove the shock absorber from its mount.

4. Install New Shocks

Front Shocks:
1. Position the new shock absorber in place.
2. Insert the lower bolt and tighten to the manufacturer's torque specification (typically around 40-60 ft-lbs).
3. Secure the upper bolt and tighten to the same torque specifications.
Rear Shocks:
1. Place the new shock absorber in the mounts.
2. Insert and tighten the lower bolt first, then the upper bolt, also to the manufacturer's torque specifications.

5. Reassemble Vehicle

Reattach the wheels and lower the vehicle from the jack stands.
Tighten the lug nuts to the manufacturer's specification (generally 140-160 ft-lbs).

6. Final Check

Inspect all bolts for tightness and ensure there are no tools left under the vehicle.
Lower the vehicle completely to the ground.