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Body Control Module
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2019 - 2020 Chevrolet Blazer Telematics Control Module (OEM)

Only 1 left in stock
$69.95

ℹ️ Product Notes

This is a used part. It is a computer module that helps control your car's systems (a Chassis Control Module). This specific module handles communication and tracking (Telematics). A mechanic may need to set up this computer part (reprogram it) before it works in your vehicle.

This module controls OnStar and phone features. It must be programmed by a dealer or mechanic to work with your vehicle's VIN.
Condition: Excellent (A)
Like new, minimal to no wear
43,617 miles
Odometer reading when part was removed
SKU #
6990594-97141-195

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 2019-2020 (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 AWD/FWD | Automatic | Models with OnStar (option UE1) only
Base SUV 2019 V6 3.6L AWD | Automatic | Models with OnStar (option UE1) only
Base SUV 2019 - 2020 V6 3.6L FWD | Automatic | Models with OnStar (option UE1) only
L SUV 2019 - 2020 L4 2.5L FWD | Automatic | Models with OnStar (option UE1) only
Premier SUV 2019 - 2020 V6 3.6L AWD/FWD | Automatic | Models with OnStar (option UE1) only
RS SUV 2019 - 2020 V6 3.6L AWD/FWD | Automatic | Models with OnStar (option UE1) only
True North SUV 2019 - 2020 V6 3.6L AWD | Automatic | Models with OnStar (option UE1) only
LS SUV 2020 L4 2.5L FWD | Automatic | Models with OnStar (option UE1) only
LT SUV 2020 L4 2.0L Turbo AWD/FWD | Automatic | Models with OnStar (option UE1) only
LT SUV 2020 L4 2.5L AWD/FWD | Automatic | Models with OnStar (option UE1) only
LT SUV 2020 V6 3.6L AWD/FWD | Automatic | Models with OnStar (option UE1) only

⚠️ 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 Telematics Control Module

  • Your vehicle's OnStar or emergency services stop working.
  • You get error messages on your dashboard related to communication systems.
  • The vehicle's GPS system malfunctions or gives incorrect locations.
  • Remote start or key fob features become unreliable.
  • The vehicle's Wi-Fi hotspot stops functioning.

Testing the Telematics Control Module

  • Have a qualified technician use a scan tool to check for diagnostic trouble codes (DTCs) related to the telematics system.
  • Check the wiring and connections to the module for any damage or corrosion.
  • If possible, temporarily swap the module with a known good one to see if the symptoms disappear. This should only be done by a professional.
  • Rule out other potential causes, such as a faulty antenna or a problem with the vehicle's electrical system.

Common Failure Causes

  • Water damage or corrosion due to leaks in the vehicle.
  • Electrical surges or voltage spikes.
  • Physical damage from accidents or impacts.
  • Normal wear and tear over time.
  • Software glitches or corrupted firmware.

Buyer's Checklist

What to Look For When Buying

  • Make sure the part is compatible with your vehicle's year, make, and model.
  • Check the part's condition carefully, especially if buying a used part.
  • Ask about the seller's warranty or return policy.
  • Verify the part has been tested and inspected, especially for used parts.

Quality Indicators

FeatureUsed OEMNew Aftermarket
OriginOriginal factory partThird-party manufacturer
TestingTypically tested and inspectedNew, but may not have same testing as OEM
WarrantyVaries by sellerVaries by manufacturer/seller
PriceGenerally lower than new aftermarketGenerally higher than used OEM
ReliabilityCan be very reliable if properly inspectedReliability varies by manufacturer

What's Included

  • The Telematics Control Module itself.
  • Sometimes, mounting hardware may be included, but it's best to confirm with the seller.
  • Instructions are usually not included, so professional installation is often recommended.

Installation Overview

Difficulty Level and Estimated Time

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

Special Tools Needed

  • Basic hand tools (sockets, wrenches, screwdrivers)
  • Scan tool to clear any diagnostic trouble codes (DTCs) after installation.
  • Possibly a trim removal tool to access the module.

Critical Steps and Tips

  1. Disconnect the negative battery cable before starting.
  2. Locate the Telematics Control Module (usually behind the glove box or under the rear seat).
  3. Disconnect the wiring harness from the module.
  4. Remove the old module and install the new one.
  5. Reconnect the wiring harness.
  6. Reconnect the negative battery cable.
  7. Use a scan tool to clear any DTCs.

DIY or Professional Installation?

  • Professional installation is recommended, especially if you are not comfortable working with electrical systems. A professional can ensure proper installation and programming.

Buying Options

Used OEM

  • Pros: Genuine factory part, tested and inspected, lower price.
  • Cons: May have some wear and tear.

New Aftermarket

  • Pros: Brand new, readily available.
  • Cons: May not have the same quality or reliability as an OEM part, potentially higher price.
FeatureUsed OEMNew Aftermarket
PriceLowerHigher
QualityGenuine factory partVaries by manufacturer
ReliabilityCan be excellent if testedVaries by manufacturer
AvailabilityMay be limitedGenerally readily available

Typical Lifespan

How Long This Part Normally Lasts

  • A Telematics Control Module typically lasts 5-10 years or more.

Factors That Affect Longevity

  • Exposure to extreme temperatures.
  • Water damage or corrosion.
  • Electrical surges.
  • The overall condition of the vehicle's electrical system.

Price Ranges

Budget vs. Mid-Range vs. Premium

  • Used OEM: $50 - $200
  • New Aftermarket: $150 - $400
  • Labor Cost: $75 - $150 (if professional installation is needed)
  • Total Job Cost Estimate: $125 - $550

Vehicle-Specific Notes

Known Issues

  • Some vehicles have reported issues with the telematics system draining the battery.
  • Software updates may be required to address certain problems.
  • Check for any Technical Service Bulletins (TSBs) related to the telematics system on your specific vehicle.

Verification After Install

How to Confirm Proper Operation

  • Check that the OnStar or emergency services are working correctly.
  • Verify that the GPS system is functioning properly.
  • Test the remote start and key fob features.
  • Ensure that the vehicle's Wi-Fi hotspot is working.
  • Use a scan tool to check for any new diagnostic trouble codes (DTCs).

What to Look/Listen For

  • No error messages on the dashboard.
  • A strong GPS signal.
  • Reliable remote start and key fob operation.
  • A stable Wi-Fi connection.

FAQ

Q: Will this part need to be programmed after installation?
A: Yes, in many cases, the Telematics Control Module will need to be programmed to your specific vehicle using a scan tool.

Q: Can I install this part myself?
A: While it is possible to install this part yourself, professional installation is recommended due to the complexity of the system and the need for programming.

Q: How do I know if this is the right part for my vehicle?
A: Make sure the part is specifically listed as compatible with your vehicle's year, make, and model.

Q: What is the warranty on a used OEM Telematics Control Module?
A: The warranty varies depending on the seller. Be sure to check the seller's warranty policy before purchasing.

Q: What happens if the Telematics Control Module fails?
A: You may lose access to features such as OnStar, GPS, remote start, and Wi-Fi hotspot. You may also see error messages on your dashboard.

Part Specifications

OEM Part Numbers:

  • GM: 42846198, 84510980, 84557982, 84578779, 84596570, 84653367, 84769125

Fits Years: 2019 2020

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