2019 - 2024 Chevrolet Blazer Climate Control Module (OEM)

What to Look For When Buying:

• Make sure the part is the correct type for your vehicle's climate control system (single-zone, dual-zone, etc.).
• Check the seller's return policy in case the part doesn't fix your problem.
• Ask about any warranty offered on the part.

Quality Indicators:

What's Typically Included:

• The climate control module itself.
• Sometimes, mounting hardware may be included, but it's best to confirm 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, but helpful)

Critical Steps and Tips:

1. Disconnect the negative battery cable before starting any electrical work.
2. Carefully remove the trim panels around the climate control module.
3. Disconnect the electrical connectors from the old module.
4. Install the new module and reconnect the electrical connectors.
5. Reinstall the trim panels.
6. Reconnect the negative battery cable.

DIY or Professional Installation?

• DIY is possible for those with some mechanical experience.
• If you're not comfortable working with electrical components, professional installation is recommended.

Used OEM:

• Best value option.
• Genuine factory parts.
• Tested and inspected.
• Significantly lower prices than new.

New Aftermarket:

• Brand new parts.
• Built to original equipment (OE) specifications.
• Can be a good alternative to OEM.

Parts Commonly Replaced or Checked:

• Blower motor resistor: Controls blower motor speed.
• Blend door actuator: Controls the flow of hot and cold air.
• Temperature sensors: Provide temperature readings to the climate control module.
• Fuses and relays: Protect the electrical circuits in the HVAC system.

Why Replace Related Parts?

• Replacing related parts can prevent repeat failures. For example, a failing blower motor resistor can put stress on the climate control module. Replacing both at the same time can prevent the new module from failing prematurely.

How Long This Part Normally Lasts:

• The climate control module can last 10 years or more under normal conditions.

Factors That Affect Longevity:

• Extreme temperatures
• Electrical surges
• Moisture
• Vibrations

Budget vs Mid-Range vs Premium Options:

• Used OEM: $75 - $200
• New Aftermarket: $150 - $350
• Labor cost (if applicable): $75 - $150
• Total job cost estimate: $150 - $500

Known Issues:

• Some models have issues with the blend door actuator failing, causing temperature control problems.
• Check for any Technical Service Bulletins (TSBs) related to the climate control system on your specific vehicle.
• Some owners have reported issues with the display screen on the climate control module.

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 heater is blowing hot air.
• Make sure the temperature controls are working correctly.
• Check the climate control display for any error messages.

What to Look/Listen For:

• Listen for any unusual noises from the blower motor or blend door actuator.
• Make sure the air is flowing evenly from all vents.
• Check that the temperature changes gradually and smoothly as you adjust the controls.

Q: Will this module need to be programmed after installation?
A: In most cases, this module will not need programming, but it's always best to check with your mechanic or a qualified technician for your specific vehicle.

Q: How can I tell if my climate control module is the problem and not something else?
A: The best way is to have a professional diagnose the system. However, if you're experiencing multiple issues like inconsistent temperatures, blower motor problems, and display issues, the module is a likely culprit.

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 this part myself?
A: It depends on your mechanical skills. If you're comfortable working with electrical components and removing trim panels, you can probably do it yourself. Otherwise, professional installation is recommended.

Q: What if the new module doesn't fix my problem?
A: Check the seller's return policy. If the module doesn't fix the problem, there may be another issue with your climate control system.

OEM Part Numbers:

• GM: 84130197, 84174821, 84221983, 84221984, 84234763, 84245752, 84295139, 84305959, 84305960, 84307103, 84422041, 84692592, 84942998, 85137508, 85137510, 85155558, 86788378

Fits Years: 2019 2020 2021 2022 2023 2024