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2003 - 2009 Chevrolet Trailblazer Theft Control Module (OEM)

IN STOCK
$69.95

ℹ️ Product Notes

This is a used part. It is a control module that manages the theft system and keyless entry for your car.

This module controls your locks and alarm. A mechanic must program it to your car's VIN for it to work.
Condition: Excellent (A)
Like new, minimal to no wear
85,237 miles
Odometer reading when part was removed
SKU #
0140341-12170-195

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 2003-2009 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL
Body Style Years Engine Attributes
Base SUV 2003 - 2008 L6 4.2L RWD | Automatic | Fits both standard and EXT long-wheelbase models
LS SUV 2003 - 2007 L6 4.2L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
LT SUV 2003 - 2009 L6 4.2L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
LTZ SUV 2003 L6 4.2L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
North Face SUV 2003 - 2004 L6 4.2L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
A SUV 2004 - 2007 L6 4.2L RWD | Automatic | Fits both standard and EXT long-wheelbase models
B SUV 2004 - 2007 L6 4.2L RWD | Automatic | Fits both standard and EXT long-wheelbase models
Q SUV 2005 L6 4.2L RWD | Automatic | Fits both standard and EXT long-wheelbase models
R SUV 2005 L6 4.2L RWD | Automatic | Fits both standard and EXT long-wheelbase models
B SUV 2006 L6 4.2L 4WD | Automatic | Fits both standard and EXT long-wheelbase models
LS SUV 2006 - 2007 V8 5.3L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
LT SUV 2006 - 2008 V8 5.3L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models
SS SUV 2006 - 2009 V8 6.0L AWD/RWD | Automatic | Fits both standard and EXT long-wheelbase models
Base SUV 2008 L6 4.2L 4WD | Automatic | Fits both standard and EXT long-wheelbase models
Base SUV 2008 V8 5.3L RWD/4WD | Automatic | Fits both standard and EXT long-wheelbase models

⚠️ 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

Is your car acting strange? A bad Theft Control Module can cause some weird problems. Here's how to tell if yours might be failing.

  • Car won't start: This is a big one. If your car cranks but won't fire up, the module might be preventing it.
  • Alarm problems: The alarm might go off for no reason, or it might not work at all.
  • Security light stays on: If the security light on your dashboard is always lit, it could be a sign of trouble.
  • Remote key fob issues: Your key fob might not lock or unlock the doors, or start the car remotely.

How can you be sure it's the Theft Control Module and not something else?

  1. Check the battery: A weak battery can cause similar issues.
  2. Inspect the wiring: Look for any damaged or loose wires connected to the module.
  3. Try a spare key: If the spare key works, the problem might be with your original key or the key reader.
  4. Consult a mechanic: A mechanic can use a scan tool to read error codes and pinpoint the problem.

What makes these modules fail?

  • Water damage: If water gets into the module, it can cause corrosion and short circuits.
  • Electrical surges: Power surges can fry the module's internal components.
  • Old age: Like any electronic part, these modules can simply wear out over time.
  • Vibration: Constant vibration can damage the module's internal connections.

Buyer's Checklist

Buying a Theft Control Module? Here's what to keep in mind.

  • Check the part number: Make sure the module is designed for your specific car model and year. (NOTE: We don't list part numbers, but you should verify this info elsewhere!)
  • Read reviews: See what other buyers say about the module's performance and reliability.
  • Warranty: Look for a module that comes with a warranty. This protects you if the module fails soon after you buy it.
  • Vendor reputation: Buy from a reputable seller with a good return policy.

What makes a good Theft Control Module?

  • Quality components: The module should be made with durable, high-quality materials.
  • Proper testing: Used modules should be tested to ensure they're working correctly.
  • Good condition: Used modules should be clean and free of damage.

What do you get when you buy this part?

  • The Theft Control Module itself.
  • Sometimes, basic installation instructions (but always consult a professional if needed).
  • Depending on the seller, possibly a warranty.

Installation Overview

How hard is it to install a Theft Control Module?

  • Difficulty: Medium. It's not the easiest job, but a mechanically inclined person can do it.
  • Time: 1-2 hours.

What tools do you need?

  • Socket set
  • Screwdrivers
  • Pliers
  • Possibly a scan tool for reprogramming (check your car's manual)

Steps to install:

  1. Disconnect the negative battery cable.
  2. Locate the Theft Control Module (usually under the dashboard or in the center console).
  3. Disconnect the wiring harness from the old module.
  4. Remove the old module.
  5. Install the new module.
  6. Reconnect the wiring harness.
  7. Reconnect the negative battery cable.
  8. Test the system.

Important tips:

  • Be careful not to damage the wiring harness.
  • Make sure the module is securely mounted.
  • Follow the instructions in your car's repair manual.

Should you do it yourself, or hire a pro?

  • DIY: If you're comfortable working on cars and have some experience with electrical systems, you can probably do it yourself.
  • Professional: If you're not sure what you're doing, it's best to hire a mechanic. They can ensure the module is installed correctly and programmed properly.

Buying Options

Let's look at your choices for buying a Theft Control Module.

  • Used OEM: These are original parts that came from the factory. They're tested and inspected to make sure they're working properly. They offer great value.
  • New Aftermarket: These are brand-new parts made by third-party companies. They're designed to meet or exceed the original equipment specifications.

Used OEM:

  • Pros: Lower cost, genuine factory part, often more reliable than aftermarket.
  • Cons: May have some wear and tear, might not last as long as a new part.

New Aftermarket:

  • Pros: Brand new, readily available.
  • Cons: Can be lower quality than OEM, might not fit perfectly.

Typical Lifespan

How long should a Theft Control Module last?

  • Average lifespan: 5-10 years.

What affects how long it lasts?

  • Climate: Extreme temperatures and humidity can shorten the module's lifespan.
  • Driving conditions: Rough roads and constant vibration can damage the module.
  • Maintenance: Proper car maintenance can help extend the module's lifespan.
  • Quality of the part: A higher-quality module will generally last longer.

Price Ranges

How much does a Theft Control Module cost?

  • Used OEM: $50 - $150
  • New Aftermarket: $80 - $200

Labor costs:

  • Professional installation: $100 - $300 (depending on the shop and location)

Total job cost:

  • DIY (Used OEM): $50 - $150
  • DIY (New Aftermarket): $80 - $200
  • Professional (Used OEM): $150 - $450
  • Professional (New Aftermarket): $180 - $500

Vehicle-Specific Notes

For the Pontiac Vibe, Toyota Corolla, and Toyota Matrix (2003-2008):

  • Some models are known to have issues with water leaking into the passenger compartment, which can damage the Theft Control Module. Check for leaks and address them before replacing the module.
  • Some owners have reported issues with the security system after replacing the module. This may require reprogramming the module with a scan tool.

Verification After Install

How do you know if the new Theft Control Module is working correctly?

  • Car starts: The most important thing is that your car starts reliably.
  • Alarm works: Test the alarm to make sure it arms and disarms properly.
  • Security light: The security light should turn off after you start the car.
  • Key fob: Make sure your key fob locks and unlocks the doors, and starts the car remotely (if equipped).
  • No error codes: Use a scan tool to check for any new error codes related to the security system.

If everything checks out, you're good to go!

FAQ

Here are some common questions people ask about Theft Control Modules:

Q: Will this module need to be programmed?
A: Possibly. Some modules need to be programmed to your car's specific VIN. Check your car's manual or consult a mechanic.

Q: What happens if I install the module incorrectly?
A: You could damage the module or your car's electrical system. It's best to have a professional install it if you're not comfortable doing it yourself.

Q: How do I know if the module is the problem and not the key fob?
A: Try using a spare key fob. If the spare works, the problem is likely with your original key fob. If neither key fob works, the problem could be with the module.

Q: Can I just bypass the Theft Control Module?
A: Bypassing the module is generally not recommended. It can disable your car's security system and make it easier to steal.

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 car.

Part Specifications

OEM Part Numbers:

  • GM: 15042968, 15114363, 88969656
  • Isuzu: 8974102070

Fits Years: 2003 2004 2005 2006 2007 2008 2009

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