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Body Control Module
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2021 - 2025 Chevrolet Trailblazer Climate Control Module (OEM)

Only 2 left in stock
$119.95

ℹ️ Product Notes

This is a used Temperature Control Module. It fits in the center of your dashboard. This module may need to be set up (reprogrammed) by a mechanic to work correctly with your vehicle.

This part requires professional programming to work. Match your original part number exactly to ensure all buttons and features function correctly.

Original Part #(s): 84249582, 84692729, 85137499
Condition: Excellent (A)
Like new, minimal to no wear
2,106 miles
Odometer reading when part was removed
SKU #
0161034-14791-195

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 of a Failing Climate Control Module

  • Inconsistent temperatures from the vents
  • Air conditioning not blowing cold air
  • Heater not blowing hot air
  • Blower motor not working at all or only working on some speeds
  • Mode selection issues (air only blowing from defrost, for example)
  • Display screen on the climate control unit not working or flickering
  • Clicking or unusual noises coming from behind the dashboard

How to Test the Climate Control Module

Testing the climate control module often requires specialized tools and knowledge. Here's a general overview, but professional diagnosis is recommended:

  1. Check Fuses and Relays: A blown fuse or faulty relay can mimic climate control module failure.
  2. Inspect Wiring: Look for damaged or corroded wires and connectors leading to the module and other climate control components.
  3. Scan for Diagnostic Trouble Codes (DTCs): Use a scan tool to check for any stored codes related to the climate control system. These codes can help pinpoint the problem.
  4. Component Testing: A technician can use a multimeter to test the module's inputs and outputs, verifying that it's sending the correct signals to other components.
  5. Bypass Test: In some cases, a technician may be able to temporarily bypass the module to see if the other climate control components are functioning correctly.

Common Failure Causes

  • Electrical surges or shorts
  • Water damage or corrosion
  • Overheating
  • Normal wear and tear over time
  • Manufacturing defects

Buyer's Checklist

What to Look For When Buying

  • Functionality: Ensure the replacement module is fully functional and tested.
  • Compatibility: Verify the module is the correct type for your vehicle's specific climate control system.
  • Warranty: Look for a warranty to protect against defects.
  • Condition: Assess the physical condition of the module, especially for used parts.

Quality Indicators

FeatureUsed OEMNew Aftermarket
OriginOriginal equipment manufacturer (OEM)Third-party manufacturer
TestingTypically tested and inspectedShould meet OE specifications
ReliabilityGenerally reliable due to OEM designVaries depending on the manufacturer
PriceUsually more affordable than new aftermarketCan be competitive, but quality can vary

What's Typically Included

  • The climate control module itself
  • Sometimes, mounting hardware (check with the seller)
  • Installation instructions (sometimes)

Installation Overview

Difficulty Level and Estimated Time

Replacing a climate control module is generally considered a medium-difficulty job.

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

Special Tools Needed

  • Screwdrivers (various sizes)
  • Socket set
  • Panel removal tools (optional, but helpful)
  • Scan tool (for clearing diagnostic codes after installation)

Critical Steps and Tips

  1. Disconnect the negative battery cable before starting any electrical work.
  2. Remove the dashboard trim surrounding the climate control unit. Use panel removal tools to avoid damaging the trim.
  3. Disconnect the electrical connectors from the old climate control module.
  4. Remove the old module by unscrewing any mounting screws.
  5. Install the new module and reconnect the electrical connectors.
  6. Reinstall the dashboard trim.
  7. Reconnect the negative battery cable.
  8. Clear any diagnostic trouble codes using a scan tool.

DIY or Professional Installation?

While a mechanically inclined person can often replace a climate control module, professional installation is recommended if:

  • You are not comfortable working with electrical systems.
  • You do not have the necessary tools.
  • You are unsure about the correct installation procedure.
  • You want to ensure the job is done correctly and avoid potential damage.

Buying Options

Used OEM

Used OEM climate control modules offer a great value. These are genuine factory parts that have been removed from vehicles. They are typically tested and inspected to ensure they are in good working condition. You get the quality and reliability of an OEM part at a significantly lower price than a new part.

New Aftermarket

New aftermarket climate control modules are brand new parts manufactured by third-party companies. These parts are designed to meet or exceed original equipment specifications. They can be a good option if you prefer a brand new part and are willing to consider a non-OEM brand.

Typical Lifespan

How Long This Part Normally Lasts

A climate control module can last for the entire lifespan of the vehicle, often 10 years or more.

Factors That Affect Longevity

  • Environmental conditions (extreme heat or cold)
  • Electrical surges or shorts
  • Water damage
  • Quality of the original part
  • Proper maintenance of the climate control system

Price Ranges

Budget vs Mid-Range vs Premium Options

  • Used OEM: $75 - $200
  • New Aftermarket: $150 - $300

Labor Cost Considerations

Labor costs for climate control module replacement can range from $100 to $300, depending on the shop's hourly rate and the complexity of the job.

Total Job Cost Estimates

  • Used OEM + Labor: $175 - $500
  • New Aftermarket + Labor: $250 - $600

Vehicle-Specific Notes

Known Issues

Some 2020-2025 Buick and Chevrolet models have experienced issues with the climate control system related to software glitches. These glitches can cause the climate control module to malfunction or display incorrect information.

TSBs or Common Complaints

Check online resources for any Technical Service Bulletins (TSBs) or common complaints related to the climate control system in your specific vehicle model. These resources can provide valuable information about potential issues and solutions.

Verification After Install

How to Confirm Proper Operation

  1. Start the engine and turn on the climate control system.
  2. Check the temperature of the air coming from the vents. Verify that the air conditioning blows cold and the heater blows hot.
  3. Test all blower motor speeds. Make sure the blower motor works on all speed settings.
  4. Select different modes (defrost, vent, floor). Verify that the air flows from the correct vents in each mode.
  5. Check the display screen on the climate control unit. Make sure it is displaying the correct information and that all buttons and controls are working properly.

What to Look/Listen For

  • Consistent and accurate temperature control
  • Proper airflow from all vents
  • Smooth and quiet blower motor operation
  • No unusual noises (clicking, hissing) from the climate control system
  • No error messages or warning lights on the dashboard

FAQ

Q: How do I know if my climate control module is bad?
A: Common symptoms include inconsistent temperatures, blower motor issues, mode selection problems, and a malfunctioning display screen.

Q: Can I replace the climate control module myself?
A: It's possible if you have mechanical skills and the right tools, but professional installation is recommended for most people.

Q: Will a used OEM climate control module work as well as a new one?
A: Yes, used OEM modules are genuine factory parts that have been tested and inspected, offering similar reliability to new parts at a lower price.

Q: Do I need to program the new climate control module?
A: In some cases, programming may be required. Check with your mechanic or the part supplier to confirm.

Q: What is the warranty on a used OEM climate control module?
A: Warranty terms vary depending on the seller. Be sure to check the warranty before purchasing.

Part Specifications

OEM Part Numbers:

  • GM: 84249582, 84692729, 85137499

Fits Years: 2021 2022 2023 2024 2025

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