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Body Control Module
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2019 - 2021 Chevrolet Blazer LED Headlight Control Module (OEM)

Only 2 left in stock
$59.95

ℹ️ Product Notes

This is a used part. It is the control module that runs your LED headlights.

This module runs the LED headlights. It requires professional programming after installation. Only fits vehicles with factory LED headlights.
Condition: Excellent (A)
Like new, minimal to no wear
29,982 miles
Odometer reading when part was removed
SKU #
9301804-91A4MG.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
Blazer 2019-2021 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base SUV 2019 L4 2.5L FWD | Automatic
Base SUV 2019 L4 2.5L AWD | Automatic
Base SUV 2019 - 2021 V6 3.6L FWD | Automatic
Base SUV 2019 V6 3.6L AWD | Automatic
L SUV 2019 - 2021 L4 2.5L FWD | Automatic
Premier SUV 2019 - 2021 V6 3.6L FWD | Automatic
Premier SUV 2019 - 2021 V6 3.6L AWD | Automatic
RS SUV 2019 - 2021 V6 3.6L AWD | Automatic
RS SUV 2019 - 2021 V6 3.6L FWD | Automatic
True North SUV 2019 - 2021 V6 3.6L AWD | Automatic
LS SUV 2020 L4 2.5L FWD | Automatic
LT SUV 2020 - 2021 L4 2.0L Turbo AWD | Automatic
LT SUV 2020 - 2021 L4 2.0L Turbo FWD | Automatic
LT SUV 2020 - 2021 L4 2.5L AWD | Automatic
LT SUV 2020 - 2021 L4 2.5L FWD | Automatic
LT SUV 2020 - 2021 V6 3.6L FWD | Automatic
LT SUV 2020 - 2021 V6 3.6L AWD | Automatic
Premier SUV 2021 L4 2.0L Turbo FWD | Automatic
Premier SUV 2021 L4 2.0L Turbo AWD | Automatic
True North SUV 2021 L4 2.0L Turbo AWD | Automatic

⚠️ 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 LED Headlight Control Module is Failing

  • Headlights flickering or turning off intermittently
  • One or both headlights not working at all
  • Error messages or warnings on the dashboard related to headlights
  • Headlights stuck on high beam or low beam
  • Headlights not adjusting properly (if equipped with auto-leveling)

How to Test if This Part is the Problem

  1. Check the headlight bulbs themselves. Make sure they are not burned out.
  2. Inspect the wiring and connectors related to the headlights for damage or corrosion.
  3. Use a multimeter to test the voltage at the headlight connector. If there is no voltage, the control module could be the problem.
  4. If possible, swap the control module with a known good one to see if the problem goes away. (This may require professional assistance).
  5. Have the vehicle's computer scanned for diagnostic trouble codes (DTCs) related to the headlights.

Common Failure Causes for This Part

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

Buyer's Checklist

What to Look for When Buying This Part

  • Ensure the part is specifically designed for LED headlights.
  • Confirm the part is compatible with your vehicle's year, make, and model.
  • Check for any visible signs of damage or corrosion.
  • Buy from a reputable seller with a good return policy.

Quality Indicators for the Available Options

FeatureUsed OEMNew Aftermarket
BrandOriginal Equipment Manufacturer (OEM) - the same brand that made the original part for your car.Typically a third-party manufacturer. Quality can vary.
TestingShould be tested to ensure it is working properly.Brand new, so theoretically functional.
WarrantyOften comes with a warranty, but it may be shorter than a new part's warranty.Usually comes with a warranty.
PriceGenerally less expensive than new.Price can vary widely depending on the brand.
Fit & FunctionGuaranteed to fit and function like the original part.Designed to meet OE specifications, but fit and function may not always be perfect.

What's Typically Included with the Part

  • The LED headlight control module itself.
  • Sometimes, mounting hardware (screws or bolts).
  • Installation instructions may or may not be included.

Installation Overview

Difficulty Level and Estimated Time

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

Special Tools Needed (if any)

  • Screwdrivers
  • Socket set
  • Multimeter (optional, for testing)
  • Diagnostic scan tool (optional, for clearing codes)

Critical Steps and Tips

  1. Disconnect the negative battery cable before starting.
  2. Locate the LED headlight control module (usually behind the headlight assembly or in the engine compartment).
  3. Disconnect the electrical connectors from the old module.
  4. Remove the old module from its mounting location.
  5. Install the new module in the same location.
  6. Reconnect the electrical connectors.
  7. Reconnect the negative battery cable.

Whether DIY is Recommended or Professional Installation is Better

  • DIY is possible for mechanically inclined individuals. However, professional installation is recommended if you are not comfortable working with electrical systems or if you lack the necessary tools. A professional can also properly diagnose the issue and ensure the new module is correctly programmed (if required).

Buying Options

Compare: Used OEM, New Aftermarket

| Feature | Used OEM ensure that the part is tested and inspected.

Used OEM

  • Best value – genuine factory parts
  • Tested and inspected
  • Significantly lower prices

New Aftermarket

  • Brand new
  • Third-party parts
  • Built to OE specs

Typical Lifespan

  • The typical lifespan of an LED headlight control module is 5-10 years.

Factors that Affect Longevity

  • Environmental conditions (exposure to moisture, heat, and vibration)
  • Quality of the original part
  • Driving habits
  • Proper installation

Price Ranges

  • Budget: $50 - $100
  • Mid-Range: $100 - $200
  • Premium: $200 - $350

Labor Cost Considerations

  • Labor costs can vary depending on the mechanic's hourly rate and the complexity of the installation. Expect to pay between $50 and $200 for labor.

Total Job Cost Estimates

  • Total job cost can range from $100 to $550, depending on the part and labor costs.

Vehicle-Specific Notes

  • Some vehicles may experience issues with headlight condensation, which can damage the control module.
  • Some models have known issues with the wiring harness that connects to the control module.
  • Check for any Technical Service Bulletins (TSBs) related to headlight problems on your specific vehicle.

Verification After Install

How to Confirm Proper Operation

  • Turn on the headlights and verify that both headlights are working properly.
  • Check that the headlights are adjusting correctly (if equipped with auto-leveling).
  • Make sure there are no error messages or warnings on the dashboard related to the headlights.

What to Look/Listen for to Verify It's Working Correctly

  • Headlights should be bright and steady, without flickering.
  • Headlights should turn on and off smoothly.
  • There should be no unusual noises coming from the headlights.

FAQ

Q: How do I know if my LED headlight control module is bad?
A: Common symptoms include flickering headlights, headlights not working at all, or error messages on your dashboard related to the headlights.

Q: Can I replace the LED headlight control module myself?
A: If you are comfortable working with electrical systems and have the necessary tools, you can attempt to replace the module yourself. However, professional installation is recommended.

Q: Will a new LED headlight control module need to be programmed?
A: Some vehicles may require the new module to be programmed to the vehicle's computer. A professional mechanic can perform this programming.

Q: Are used OEM LED headlight control modules reliable?
A: Used OEM modules can be a good option because they are genuine factory parts that have been tested and inspected. This can offer a cost-effective solution.

Q: What is the difference between a used OEM and a new aftermarket LED headlight control module?
A: A used OEM module is a genuine factory part that was originally installed in the vehicle. A new aftermarket module is a third-party part that is designed to meet OE specifications.

Part Specifications

OEM Part Numbers:

  • GM: 84061554, 84153659, 84345956

Fits Years: 2019 2020 2021

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