OEM Front Strut Assembly for 2020-2025 Buick & Chevrolet • Encore GX, Trailblazer - Left (Driver)

What to Look For When Buying:

• Check for any visible damage like dents, cracks, or leaks.
• Make sure the strut is the correct type for your vehicle (left/driver's side).
• Confirm that the strut includes all necessary mounting hardware.

Quality Indicators:

• Look for struts made from durable materials.
• Check reviews and ratings from other buyers.
• Consider brands known for quality and reliability.

What's Included:

• The strut itself
• Coil spring (usually pre-assembled)
• Strut mount
• Jounce bumper (bump stop)
• Boot (dust cover)

Difficulty Level and Estimated Time:

• Difficulty: Intermediate
• Estimated Time: 1-3 hours per side

Special Tools Needed:

• Strut spring compressor
• Socket set
• Wrench set
• Torque wrench
• Jack and jack stands

Critical Steps and Tips:

1. Loosen the lug nuts on the wheel.
2. Raise the vehicle and secure it with jack stands.
3. Remove the wheel.
4. Disconnect any brake lines or sensors attached to the strut.
5. Remove the bolts holding the strut assembly in place.
6. Use a strut spring compressor to safely compress the coil spring.
7. Remove the strut mount and other components from the old strut.
8. Install the new strut assembly in reverse order.
9. Torque all bolts to the manufacturer's specifications.

DIY or Professional Installation:

• DIY is possible for experienced mechanics.
• Professional installation is recommended if you are not comfortable working with suspension components or using a spring compressor. Spring compressors can be dangerous if used incorrectly.

| Feature | Used OEM THE ENCORE GX AND TRAILBLAZER ARE BUILT ON THE SAME PLATFORM, SO THIS PART IS COMPATIBLE WITH BOTH.

Used OEM:

• Best Value: Genuine factory parts at a lower price.
• Tested and Inspected: Ensures functionality and reliability.
• Original Quality: Maintains the original ride and handling characteristics of your vehicle.

Refurbished OEM:

• Restored Condition: Factory parts that have been professionally restored.
• New Components: May include new bushings, seals, or other wear items.
• Like-New Performance: Offers a balance of cost and performance.

New Aftermarket:

• Brand New: Third-party parts manufactured to meet or exceed OE specifications.
• Wide Availability: Often readily available and competitively priced.
• Quality Varies: Research the brand and read reviews to ensure quality.

• Strut Mounts: Often wear out at the same time as the struts.
• Sway Bar Links: Can be damaged when the struts are removed.
• Wheel Alignment: Necessary after replacing struts to ensure proper handling and tire wear.

Replacing these parts together can prevent repeat failures and save you time and money in the long run. Worn strut mounts can cause noise and vibration, while damaged sway bar links can affect handling. A proper wheel alignment is crucial for even tire wear and optimal vehicle performance.

• Average Lifespan: 50,000 - 75,000 miles

Factors Affecting Longevity:

• Driving conditions (rough roads, potholes)
• Climate (extreme temperatures, road salt)
• Driving habits (aggressive driving, frequent braking)
• Vehicle load (carrying heavy loads regularly)

• Used OEM: $50 - $150
• Refurbished OEM: $100 - $200
• New Aftermarket: $75 - $250

Labor Costs:

• Professional installation can range from $150 - $300 per strut.

Total Job Cost Estimate:

• DIY (Parts Only): $50 - $500 (depending on parts chosen)
• Professional Installation: $200 - $550+ (parts + labor)

The Encore GX and Trailblazer can sometimes experience premature strut wear due to the vehicle's weight and suspension design. Some owners have reported issues with clunking noises from the front suspension, which can often be attributed to worn strut mounts or struts. Always inspect the strut mounts when replacing the struts.

How to Confirm Proper Operation:

• Test Drive: Drive the vehicle at various speeds and over different road surfaces.
• Listen for Noises: Pay attention to any unusual clunking, squeaking, or knocking sounds.
• Check Handling: Ensure the vehicle handles properly, with no excessive body roll or instability.

What to Look/Listen For:

• Smooth and controlled ride
• No excessive bouncing after hitting bumps
• No unusual noises from the front suspension
• Proper steering response

FAQ

Q: How do I know if I need to replace just one strut or both?
A: It's generally recommended to replace struts in pairs (both front or both rear) to ensure even handling and braking performance. Replacing only one strut can lead to uneven wear and handling issues.

Q: Can I replace the front strut assembly myself?
A: Replacing a front strut assembly is a moderately difficult task that requires specialized tools, including a strut spring compressor. If you are not comfortable working with suspension components, it's best to have a professional mechanic do the job.

Q: What is the difference between an OEM strut and an aftermarket strut?
A: OEM struts are made by the original manufacturer of the vehicle and are designed to meet the exact specifications of your car. Aftermarket struts are made by third-party companies and may vary in quality and performance.

Q: How long will a new strut assembly last?
A: The lifespan of a new strut assembly depends on several factors, including driving conditions, climate, and driving habits. On average, a strut assembly will last between 50,000 and 75,000 miles.

Q: Do I need a wheel alignment after replacing the front strut assembly?
A: Yes, a wheel alignment is highly recommended after replacing the front strut assembly. This will ensure that your vehicle handles properly and that your tires wear evenly.

OEM Part Numbers:

• ACDelco: 42755621
• GM: 42703182, 42721282, 42755601

Fits Years: 2020 2021 2022 2023 2024 2025