2019 - 2025 Chevrolet Blazer Climate Control Module (OEM)

What to Look for When Buying This Part

• Compatibility: Make sure the part is designed for your vehicle's year, make, and model.
• Condition: If buying a used part, check for any signs of damage or wear.
• Warranty: Look for a warranty that covers the part in case of failure.
• Seller reputation: Buy from a reputable seller with good reviews.

Quality Indicators

What's Typically Included

• The climate control module itself.
• Sometimes, installation instructions (check with the seller).

Difficulty Level and Estimated Time

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

Special Tools Needed

• Screwdrivers
• Socket set
• Panel removal tools (optional)

Critical Steps and Tips

1. Disconnect the battery: This is important to prevent electrical shock.
2. Remove the old module: Carefully remove the trim panels around the climate control module. Disconnect the wiring harness and remove the module.
3. Install the new module: Connect the wiring harness to the new module and install it in the dashboard.
4. Reinstall the trim panels: Carefully reinstall the trim panels.
5. Reconnect the battery: Reconnect the battery.

DIY or Professional Installation?

• DIY is possible for mechanically inclined individuals. However, professional installation is recommended if you are not comfortable working with electrical components or removing dashboard panels.

Compare: Used OEM, New Aftermarket

| Feature | Used OEM do NOT make Used OEM sound unreliable 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.

• Blower motor resistor
• Blower motor
• AC compressor
• Refrigerant
• Cabin air filter

Replacing these parts at the same time can prevent repeat failures. A failing blower motor resistor can cause the climate control module to work harder, leading to its failure. A clogged cabin air filter can restrict airflow, also stressing the system.

• The climate control module typically lasts 7-10 years.

Factors that affect longevity:

• Climate conditions (extreme heat or cold)
• Driving habits
• Regular maintenance of the climate control system
• Electrical system health

• Used OEM: $50 - $200
• New Aftermarket: $100 - $300
• Labor cost: $100 - $300 (if professional installation is needed)
• Total job cost estimate: $150 - $600

Some vehicles have known issues with the solder joints on the climate control module circuit board. This can cause intermittent failures or complete loss of function. Check online forums for your specific vehicle model to see if this is a common problem.

How to Confirm Proper Operation

• Start the vehicle and 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 heat is blowing hot air.
• Make sure that the temperature controls are working correctly.
• Check that all the buttons on the climate control module are functioning.
• Ensure the display screen is clear and easy to read.

What to Look/Listen For

• Listen for any unusual noises from the blower motor or AC compressor.
• Watch for any error messages on the display screen.
• Feel for consistent airflow from all the vents.

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

Q: How can I tell if my climate control module is the problem and not something else?
A: The symptoms listed above can help you identify a failing climate control module. However, it's best to have a professional technician diagnose the problem to be sure.

Q: What does OEM mean?
A: OEM stands for Original Equipment Manufacturer. It means the part was made by the same company that made the original part for your vehicle.

Q: Is it difficult to replace the climate control module myself?
A: The difficulty level is intermediate. If you're comfortable working with electrical components and removing dashboard panels, you can likely do it yourself. Otherwise, professional installation is recommended.

Q: What kind of warranty comes with a used OEM climate control module?
A: Warranty coverage varies depending on the seller. Check the seller's warranty policy before purchasing. Many offer a limited warranty of 30-90 days.

OEM Part Numbers:

• GM: 84130197, 84174821, 84221983, 84221984, 84234763, 84245752, 84295139, 84305959, 84305960, 84307103, 84422041, 84692592, 84942998, 85137508, 85137510, 85155558

Fits Years: 2019 2020 2021 2022 2023 2024 2025