2022 - 2025 Chevrolet Blazer Climate Control Module (OEM)

What to Look For When Buying:

• Correct fit: Ensure the part is designed for your specific year, make, and model vehicle.
• Functionality: Verify that all buttons, knobs, and display features are working properly.
• Physical condition: Inspect the part for any signs of damage, such as cracks, broken connectors, or corrosion.

Quality Indicators:

What's Typically Included:

• The climate control module itself
• Sometimes mounting hardware (check with the seller)
• Installation instructions (may be generic)

Difficulty Level and Estimated Time:

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

Special Tools Needed:

• Screwdrivers (various sizes)
• Panel removal tools
• Socket set
• OBD-II scanner (optional, for clearing codes)

Critical Steps and Tips:

1. Disconnect the battery: This is crucial to prevent electrical shocks and damage to the vehicle's electrical system.
2. Remove the dashboard trim: Carefully remove the trim panels surrounding the climate control module. Use panel removal tools to avoid damaging the plastic.
3. Disconnect the wiring harness: Unplug the electrical connectors from the back of the module.
4. Remove the old module: Unscrew or unclip the old module from the dashboard.
5. Install the new module: Install the new module in the reverse order of removal.
6. Reconnect the battery: Reconnect the battery and test the system.

DIY or Professional Installation?

• DIY is possible for mechanically inclined individuals with some experience.
• Professional installation is recommended if you are not comfortable working with electrical systems or removing dashboard components.

Used OEM:

• Pros: Genuine factory part, typically tested and inspected, significantly lower price than new.
• Cons: May have some cosmetic wear, warranty coverage may be limited.

New Aftermarket:

• Pros: Brand new, typically comes with a warranty.
• Cons: Quality can vary depending on the manufacturer, may not fit or function exactly like the original.

Parts Commonly Replaced or Checked:

• Blower motor resistor: Controls the speed of the blower motor.
• Blower motor: Circulates air through the vents.
• A/C compressor: Compresses the refrigerant.
• Refrigerant: The fluid that cools the air.
• Cabin air filter: Filters the air entering the cabin.

Why Replace Related Parts?

• Replacing worn or faulty related parts can prevent repeat failures of the climate control module. For example, a failing blower motor resistor can cause excessive heat, which can damage the climate control module.

How Long This Part Normally Lasts:

• 7-10 years on average.

Factors That Affect Longevity:

• Environmental conditions (extreme heat or cold)
• Electrical surges
• Water damage
• Driving habits
• Quality of the original part

Price Ranges:

• Used OEM: $75 - $250
• New Aftermarket: $100 - $300

Labor Cost Considerations:

• Labor costs can range from $100 to $300, depending on the shop and the complexity of the installation.

Total Job Cost Estimates:

• Used OEM: $175 - $550 (part + labor)
• New Aftermarket: $200 - $600 (part + labor)

Known Issues:

• Some models have reported issues with the display screen flickering or going blank.
• Some owners have experienced problems with the temperature control not working properly.

TSBs or Common Complaints:

• Check online forums and technical service bulletins (TSBs) for any specific issues related to your vehicle's climate control system.

How to Confirm Proper Operation:

• Turn on the ignition and start the engine.
• Turn on the climate control system.
• Check that the blower motor is working on all speeds.
• Verify that the air conditioning is blowing cold air and the heater is blowing hot air.
• Test all buttons and knobs on the climate control module to ensure they are functioning properly.
• Check the display screen for any errors or abnormalities.

What to Look/Listen For:

• Consistent air temperature from the vents.
• No unusual noises from the blower motor or A/C compressor.
• No error messages on the display screen.
• Smooth and responsive operation of all controls.

Q: Will this climate control module need to be programmed?
A: Some vehicles may require programming after installation. Check your vehicle's repair manual or consult with a mechanic to determine if programming is necessary.

Q: How do I know if my climate control module is the problem?
A: The best way to diagnose a faulty climate control module is to follow the testing steps outlined in the "Symptoms & Diagnosis" section.

Q: What is the difference between a used OEM and a new aftermarket climate control module?
A: A used OEM module is a genuine factory part that has been removed from another vehicle. A new aftermarket module is a third-party part that is designed to fit and function like the original.

Q: How long does it take to install a climate control module?
A: The installation process typically takes 1-2 hours, depending on your experience and the complexity of the vehicle's dashboard.

Q: What kind of warranty comes with a used OEM climate control module?
A: The warranty coverage for a used OEM module varies depending on the seller. Be sure to check the warranty terms before making a purchase.

OEM Part Numbers:

• GM: 84305960, 85137510

Fits Years: 2022 2023 2024 2025