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Body Control Module

2021 - 2025 Chevrolet Trailblazer Climate Control Module (OEM)

Only 2 left in stock
$69.95

ℹ️ Product Notes

This is a used part. This temperature control module manages your car's heater and air conditioning. It supports dual zone climate control. The module is mounted on the heater core. Important: This part may need to be reprogrammed to work correctly with your vehicle.

This part requires professional programming to work. It is for vehicles with dual-zone climate control. Match your old part number exactly before buying.

Original Part #(s): 84130197, 84174821, 84221983, 84221984, 84234763, 84245752, 84295139, 84305959, 84305960, 84307103, 84422041, 84692592, 84942998, 85137508, 85137510, 85155558
Condition: Excellent (A)
Like new, minimal to no wear
4,999 miles
Odometer reading when part was removed
SKU #
7776132-70181-195

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our used parts with a generous 6-month warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 6-Month Warranty - Buy with Confidence!

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Vehicle Fitment Guide

This part fits the following vehicles:

Chevrolet
Trailblazer 2021-2025 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
ACTIV SUV 2021 - 2025 L3 1.3L Turbo AWD/FWD | Automatic & Automatic CVT
L SUV 2021 - 2022 L3 1.2L Turbo FWD | Automatic CVT
LS SUV 2021 - 2024 L3 1.2L Turbo AWD/FWD | Automatic & Automatic CVT
LS SUV 2021 - 2025 L3 1.3L Turbo AWD/FWD | Automatic & Automatic CVT
LT SUV 2021 - 2024 L3 1.2L Turbo AWD/FWD | Automatic & Automatic CVT
LT SUV 2021 - 2025 L3 1.3L Turbo AWD/FWD | Automatic & Automatic CVT
RS SUV 2021 - 2025 L3 1.3L Turbo AWD/FWD | Automatic & Automatic CVT
LS SUV 2025 L3 1.2L FLEX Turbo AWD/FWD | Automatic & Automatic CVT
LT SUV 2025 L3 1.2L FLEX Turbo AWD/FWD | Automatic & Automatic CVT
2023

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning Signs Your Climate Control Module is Failing

  • Inconsistent temperatures from the vents
  • Air conditioning or heat not working at all
  • Blower motor not working or only working on certain speeds
  • Display screen flickering, dimming, or not working
  • Buttons on the climate control module not responding

How to Test if This Part is the Problem

  1. Check the basics: Make sure your vehicle has enough refrigerant and that the blower motor is functioning.
  2. Inspect fuses and relays: Look for blown fuses or faulty relays related to the climate control system. Replace any that are bad.
  3. Scan for diagnostic trouble codes (DTCs): Use an OBD-II scanner to check for any codes related to the climate control system. These codes can help pinpoint the problem.
  4. Inspect wiring and connectors: Look for any damaged or corroded wiring or connectors leading to the climate control module.
  5. Test the module: A professional technician can use specialized tools to test the climate control module itself to see if it's sending the correct signals.

Common Failure Causes

  • Electrical surges or shorts
  • Overheating
  • Physical damage from accidents
  • Normal wear and tear over time
  • Moisture damage

Buyer's Checklist

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

FeatureUsed OEMNew Aftermarket
OriginOriginal equipment from the manufacturerManufactured by a third-party company
TestingTypically tested and inspectedShould be built to meet OE specifications
FitGuaranteed to fitDesigned to fit, but may require adjustments
ReliabilityKnown reliability of the original partReliability can vary by manufacturer

What's Typically Included

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

Installation Overview

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.

Buying Options

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.

Typical Lifespan

  • 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

Price Ranges

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

Vehicle-Specific Notes

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.

Verification After Install

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.

FAQ

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.

Part Specifications

OEM Part Numbers:

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

Fits Years: 2021 2022 2023 2024 2025

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