2021 - 2022 Chevrolet Trailblazer Chassis Control Module (OEM)

Before buying a Chassis Control Module, consider these points:

• Check Compatibility: Even though this CCM fits many vehicles, confirm it's the correct part for your specific year, make, and model.
• Inspect the Part: If buying a used part, carefully inspect it for any signs of damage, corrosion, or wear.
• Warranty: Look for a warranty, especially when buying a used part. This protects you if the part fails shortly after installation.
• Seller Reputation: Buy from a reputable seller with good reviews and a history of selling quality auto parts.

Quality Indicators:

• OEM Markings: An OEM (Original Equipment Manufacturer) part will have the manufacturer's markings.
• Cleanliness: A clean, well-maintained part is generally a good sign.
• Functionality Testing: Ask if the part has been tested to ensure it's working properly.

What's Included:

• The Chassis Control Module itself is typically the only item included. You may need to reuse existing mounting hardware.

Replacing a Chassis Control Module can range from moderately difficult to complex, depending on your experience.

• Difficulty Level: Intermediate
• Estimated Time: 1-2 hours

Special Tools Needed:

• Socket set
• Screwdrivers
• Diagnostic scan tool (to clear error codes after installation)

Critical Steps and Tips:

1. Disconnect the negative battery cable before starting any work.
2. Locate the Chassis Control Module (usually under the dash or in the center console).
3. Disconnect the wiring harness from the old CCM.
4. Remove the old CCM.
5. Install the new CCM and reconnect the wiring harness.
6. Reconnect the negative battery cable.
7. Use a diagnostic scan tool to clear any error codes.

DIY or Professional Installation?

• If you're comfortable working on your vehicle's electrical system and have experience using a diagnostic scan tool, you may be able to replace the CCM yourself. However, professional installation is recommended if you're not confident in your abilities.

You have a couple of choices when buying a Chassis Control Module:

• Used OEM: These are genuine factory parts that were originally installed in the vehicle. They offer excellent value because they're tested and inspected to ensure they meet quality standards, but are available at a lower price than new parts.
• New Aftermarket: These are brand-new parts made by third-party manufacturers. They are designed to meet or exceed the original equipment specifications.

When replacing the Chassis Control Module, consider these related parts:

• Wheel Speed Sensors: These sensors provide data to the CCM. If they're faulty, they can cause problems with the ABS and traction control systems.
• ABS Pump: The ABS pump works in conjunction with the CCM. If the pump is failing, it can put extra strain on the CCM.
• Wiring Harness: Inspect the wiring harness for any damage or corrosion. A faulty wiring harness can prevent the CCM from working properly.

Replacing these parts can help prevent repeat failures and ensure the entire system is working optimally.

A Chassis Control Module typically lasts for 8-12 years or 100,000-150,000 miles.

Factors Affecting Longevity:

• Driving Conditions: Harsh driving conditions, such as frequent off-roading or driving on rough roads, can shorten the lifespan of the CCM.
• Climate: Extreme temperatures and humidity can damage the CCM.
• Maintenance: Proper vehicle maintenance, including regular inspections and addressing electrical issues promptly, can help prolong the lifespan of the CCM.

The price of a Chassis Control Module can vary depending on whether you choose a used OEM or new aftermarket part.

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

Labor Cost Considerations:

• Professional installation can add $100 - $200 to the total cost.

Total Job Cost Estimates:

• Used OEM (with installation): $250 - $500
• New Aftermarket (with installation): $350 - $650

Some Buick, Cadillac, Chevrolet, and GMC vehicles have known issues related to the chassis control system.

• Some models have experienced problems with water intrusion affecting the CCM. Check for any signs of water damage in the area where the CCM is located.
• Software updates are sometimes released to address issues with the chassis control system. Make sure your vehicle has the latest software updates installed.
• Consult your vehicle's service manual or a trusted mechanic for any specific issues related to your vehicle's chassis control system.

After installing the new Chassis Control Module, it's important to verify that it's working properly.

• Check for Warning Lights: Make sure there are no warning lights illuminated on the dashboard related to the ABS, traction control, or stability control system.
• Test the ABS: Perform a test of the ABS system by braking hard in a safe location. You should feel the ABS system engage and prevent the wheels from locking up.
• Test the Traction Control: Test the traction control system by accelerating quickly on a slippery surface. You should feel the traction control system engage and prevent the wheels from spinning.
• Listen for Unusual Noises: Listen for any unusual noises coming from the ABS pump or other components of the chassis control system.

Q: Will this CCM need to be programmed after installation?
A: In some cases, yes. Some vehicles require the CCM to be programmed to match the vehicle's VIN. Consult your vehicle's service manual or a mechanic to determine if programming is required.

Q: How do I know if the CCM is the problem and not something else?
A: The best way to diagnose a CCM problem is to have your vehicle scanned by a mechanic. They can retrieve error codes and perform tests to determine if the CCM is faulty.

Q: What happens if I don't replace the CCM when it's failing?
A: Ignoring a failing CCM can lead to safety issues, such as reduced braking performance and loss of stability control. It can also cause damage to other components of the chassis control system.

Q: Is it okay to drive with a faulty Chassis Control Module?
A: It's generally not recommended to drive with a faulty CCM, as it can compromise the safety and handling of your vehicle. Get it checked and repaired as soon as possible.

Q: How can I prevent my new CCM from failing prematurely?
A: Ensure your vehicle is properly maintained, address any electrical issues promptly, and avoid exposing the CCM to water or extreme temperatures.

OEM Part Numbers:

• Other: 13509518, 13523281, 13540045, 13595, 13595511

Fits Years: 2021 2022