OEM ABS Pump Assembly for 2020-2025 Buick & Chevrolet • Encore GX, Trailblazer

Before you buy an ABS pump assembly, consider these points:

• Check the Part Number: Although we don't list them here, make sure the replacement part is compatible with your vehicle.
• Warranty: Look for a part with a warranty to protect against defects.
• Seller Reputation: Buy from a reputable seller with good reviews.
• Condition: Decide whether you want a used, refurbished, or new aftermarket part.

Quality Indicators:

• Used OEM: Look for parts that have been tested and inspected.
• Refurbished OEM: Check if the part has been professionally restored with new components.
• New Aftermarket: Choose a reputable brand known for quality.

What's Included:

Typically, the ABS pump assembly includes the pump motor and the hydraulic control unit. Some may include the ABS module, but this can vary.

Replacing an ABS pump assembly can be moderately difficult.

• Difficulty Level: Intermediate to Advanced
• Estimated Time: 2-4 hours

Special Tools Needed:

• OBD-II Scanner: To clear ABS codes after installation.
• Brake Bleeding Kit: To bleed the brakes after replacing the ABS pump.
• Wrench Set: Standard metric wrenches and sockets.
• Torque Wrench: To tighten bolts to the correct specifications.

Critical Steps and Tips:

1. Disconnect the negative battery cable.
2. Carefully disconnect the brake lines from the ABS pump.
3. Remove the old ABS pump assembly.
4. Install the new ABS pump assembly.
5. Reconnect the brake lines, making sure they are tight.
6. Bleed the brakes to remove any air from the system.
7. Reconnect the negative battery cable.
8. Use an OBD-II scanner to clear any ABS codes.

DIY or Professional Installation?

Due to the complexity of the braking system, professional installation is recommended if you're not experienced with automotive repairs. Improper installation can lead to brake failure.

Here's a comparison of your buying options:

• Used OEM: These are genuine factory parts that have been tested and inspected. They offer excellent value.
• Refurbished OEM: These are factory parts that have been professionally restored with new components.
• New Aftermarket: These are brand new third-party parts built to OE specifications.

Consider replacing these parts at the same time:

• Brake Fluid: Replacing the brake fluid ensures the system is clean and free of contaminants.
• Brake Lines: Inspect the brake lines for leaks or damage. Replace them if necessary.
• Brake Pads and Rotors: If your brakes are worn, replace them to ensure optimal braking performance.

Replacing these parts together can prevent repeat failures by ensuring all components are in good working order and compatible with the new ABS pump assembly.

An ABS pump assembly typically lasts between 7 to 10 years, or 150,000 to 200,000 miles.

Factors that Affect Longevity:

• Driving Habits: Aggressive braking can shorten the lifespan of the ABS pump.
• Maintenance: Regular brake fluid changes can help prolong the life of the ABS pump.
• Environmental Conditions: Exposure to harsh weather and road salt can damage the ABS pump.

Here are typical price ranges for ABS pump assemblies:

• Used OEM: $150 - $300
• Refurbished OEM: $250 - $450
• New Aftermarket: $300 - $600

Labor Cost Considerations:

Professional installation can cost between $200 and $400, depending on the shop and your location.

Total Job Cost Estimates:

• Used OEM: $350 - $700 (part + labor)
• Refurbished OEM: $450 - $850 (part + labor)
• New Aftermarket: $500 - $1000 (part + labor)

Some 2020-2025 Buick Encore GX and Chevy Trailblazer models have experienced issues with the ABS system due to sensor failures or software glitches. Check for any Technical Service Bulletins (TSBs) related to the ABS system on your vehicle. Some owners have reported issues with ABS activation in cold weather.

After installing the new ABS pump assembly, verify proper operation:

• Check the ABS Warning Light: Make sure the ABS light is off after starting the engine.
• Test the Brakes: Perform a test drive to ensure the brakes are working properly.
• Listen for Unusual Noises: Listen for any unusual noises from the ABS pump during braking.
• Scan for Codes: Use an OBD-II scanner to check for any new ABS codes.

• Q: How do I know if my ABS pump is bad?
• A: Common signs include the ABS warning light being on, reduced braking power, and erratic braking.

• Q: Can I drive with a bad ABS pump?
• A: It's not recommended. A faulty ABS pump can affect your braking performance and safety.

• Q: How long does it take to replace an ABS pump?
• A: It typically takes 2-4 hours for a professional mechanic to replace an ABS pump.

• Q: Will a new ABS pump fix my ABS light?
• A: If the ABS pump is the cause of the problem, then replacing it should turn off the ABS light. However, other issues can also trigger the ABS light.

• Q: Do I need to bleed the brakes after replacing the ABS pump?
• A: Yes, it's essential to bleed the brakes after replacing the ABS pump to remove any air from the system.

OEM Part Numbers:

• GM: 42790149, 42907267, 60007366, 60008853

Fits Years: 2020 2021 2022 2023 2024 2025