2021 - 2025 Chevrolet Trailblazer Control Arm - Lower Front (OEM)

What to look for when buying this part:

• Check for any signs of damage or corrosion.
• Ensure the ball joint (if included) moves smoothly but isn't excessively loose.
• Verify the bushings are in good condition and not cracked or torn.
• Make sure you are buying the correct control arm for the left or right side of your vehicle.

Quality indicators for the available options:

What's typically included with the part:

• The control arm itself.
• Sometimes includes a new ball joint pre-installed.
• Sometimes includes new bushings pre-installed.
• Mounting hardware may or may not be included.

Difficulty level and estimated time:

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

Special tools needed (if any):

• Socket set and wrenches
• Ball joint separator (pickle fork or ball joint press)
• Torque wrench
• Jack and jack stands
• Wheel chocks

Critical steps and tips:

1. Secure the vehicle on jack stands.
2. Remove the wheel.
3. Disconnect the brake lines and ABS sensor wires (be careful not to damage them).
4. Separate the ball joint from the steering knuckle.
5. Unbolt the control arm from the vehicle frame.
6. Install the new control arm, tightening the bolts to the manufacturer's specifications.
7. Reconnect the ball joint, brake lines, and ABS sensor wires.
8. Reinstall the wheel.
9. Lower the vehicle and torque the lug nuts.

Whether DIY is recommended or professional installation is better:

• DIY is possible for experienced mechanics.
• Professional installation is recommended if you are not comfortable working on suspension components. Suspension work can be dangerous if not done correctly.

Compare: Used OEM, New Aftermarket

Used OEM: Best value - genuine factory parts, tested and inspected, at significantly lower prices.

New Aftermarket: Brand new third-party parts built to OE specs.

Parts commonly replaced or checked at the same time:

• Ball joints
• Control arm bushings
• Sway bar links
• Struts or shocks
• Wheel alignment

Why replacing related parts prevents repeat failures:

• Worn ball joints or bushings can put stress on the new control arm, causing it to fail prematurely. Replacing these parts together ensures that all suspension components are working properly and reduces the risk of future problems. A wheel alignment is crucial after replacing any suspension components to ensure proper tire wear and handling.

How long this part normally lasts:

• 75,000 - 150,000 miles

Factors that affect longevity:

• Driving conditions (rough roads, potholes)
• Climate (road salt, extreme temperatures)
• Driving habits (aggressive driving, frequent braking)
• Quality of the part

Budget vs mid-range vs premium options:

• Used OEM: $50 - $150
• New Aftermarket: $75 - $300+

Labor cost considerations if applicable:

• Labor costs for replacing a control arm typically range from $150 - $400 per side.

Total job cost estimates:

• DIY (parts only): $50 - $600 (depending on parts chosen)
• Professional Installation: $200 - $1000+ (depending on parts and labor rates)

Known issues for this vehicle's system related to this part:

• Some models have been known to experience premature bushing wear, especially in areas with harsh winters and salted roads.
• Check for any recalls or Technical Service Bulletins (TSBs) related to the front suspension.

Any TSBs or common complaints:

• Research common complaints for the 2020-2025 Buick & Chevrolet models related to front suspension noises or handling issues. Check the NHTSA website for any applicable TSBs.

How to confirm proper operation:

• Test drive the vehicle and listen for any unusual noises.
• Check for proper steering response and handling.
• Inspect the control arm and related components for any leaks or loose connections.

What to look/listen for to verify it's working correctly:

• No clunking or rattling noises when going over bumps.
• Steering feels tight and responsive.
• Vehicle tracks straight without pulling to one side.
• No vibrations in the steering wheel.
• Get a wheel alignment performed to ensure proper tire wear.

Q: How do I know if my control arm bushings are bad?
A: Look for cracks, tears, or excessive play in the bushings. You may also hear a squeaking or clunking noise when driving over bumps.

Q: Can I replace just the ball joint or bushings on the control arm?
A: Yes, on some models, the ball joint and bushings can be replaced separately. However, it is often easier and more cost-effective to replace the entire control arm assembly.

Q: How important is a wheel alignment after replacing a control arm?
A: A wheel alignment is crucial after replacing a control arm. It ensures that your vehicle's wheels are properly aligned, which prevents uneven tire wear and ensures proper handling.

Q: What is the difference between a lower and upper control arm?
A: The lower control arm is located at the bottom of the suspension system, while the upper control arm is located at the top. They both play a role in controlling the movement of the wheel and suspension.

Q: How long does it take to replace a control arm?
A: The replacement time can vary depending on your experience and the complexity of the job. It typically takes 1-3 hours per side.

OEM Part Numbers:

• GM: 42649478, 42649479, 42742494, 42742495, 42762056, 42762057

Fits Years: 2021 2022 2023 2024 2025