2019 - 2021 Chevrolet Blazer Theft Control Module (OEM)

Buying a Theft Control Module? Here's what to look for:

• Check the Part: Make sure the part looks clean and undamaged.
• Ask About Testing: If buying a used part, ask if it has been tested.
• Warranty: See if the part comes with a warranty. This protects you if it fails soon after you buy it.

Quality indicators:

• OEM Markings: Original Equipment Manufacturer (OEM) parts will have the manufacturer's logo and part number.
• Reputable Seller: Buy from a seller with good reviews and a return policy.

What's included?

• The Theft Control Module itself is usually the only part included. You might need to have it programmed to your car.

Replacing a Theft Control Module can be tricky.

• Difficulty: Medium to Hard.
• Estimated Time: 1-3 hours.

Special tools:

• You'll need basic hand tools like sockets and wrenches.
• A scan tool might be needed to program the new module to your car.

Critical steps and tips:

1. Disconnect the battery before starting.
2. Locate the Theft Control Module (usually under the dash or in the center console).
3. Unplug the old module and plug in the new one.
4. Reconnect the battery.
5. Program the new module to your car using a scan tool.

Is DIY recommended?

• If you're comfortable working on cars and have a scan tool, you can try it yourself.
• If you're not sure, it's best to have a professional install it. Programming the module often requires specialized equipment.

You have a few choices when buying a Theft Control Module:

• Used OEM: These are original parts from the factory. They're tested and inspected to make sure they work. They're usually the best value.
• New Aftermarket: These are brand-new parts made by other companies. They're designed to meet the original factory specifications.

Used OEM:

• Pros: Genuine factory part, lower price, tested for quality.
• Cons: Might have some wear and tear.

New Aftermarket:

• Pros: Brand new, readily available.
• Cons: May not be as reliable as OEM, can be more expensive.

Other parts you might want to check or replace at the same time:

• Ignition Switch: A faulty ignition switch can cause similar problems.
• Wiring Harness: Damaged wires can prevent the Theft Control Module from working correctly.
• Key Fob: Make sure your key fob is working properly.

Why replace related parts?

• Replacing worn-out parts can prevent the new Theft Control Module from failing. It can also save you time and money in the long run.

How long does a Theft Control Module usually last?

• Typical Lifespan: 7-10 years.

Factors that affect longevity:

• Climate: Extreme temperatures can shorten the lifespan.
• Water Damage: Water is the enemy of electronics.
• Electrical Problems: Surges and shorts can damage the module.

How much does a Theft Control Module cost?

• Used OEM: $50 - $200
• New Aftermarket: $100 - $300
• Labor Cost: $100 - $300 (if you have a mechanic install it)
• Total Job Cost: $150 - $600

Some vehicles have known issues with their theft control systems.

• Some models have problems with water getting into the module.
• Check for any Technical Service Bulletins (TSBs) related to the theft control system on your specific vehicle. These bulletins can provide helpful information about common problems and solutions.

How to make sure the new Theft Control Module is working:

• Start the Car: The car should start normally.
• Check the Security Light: The security light should go off after you start the car.
• Test the Alarm: Make sure the alarm works correctly.
• Scan for Codes: Use a scan tool to check for any new error codes.

Q: Will this Theft Control Module need to be programmed to my car?
A: Yes, most likely. The new module needs to be programmed to recognize your car's key and other systems.

Q: Can I install this part myself?
A: If you have experience working on cars and have the necessary tools, you can try. However, programming the module usually requires specialized equipment.

Q: What if the new Theft Control Module doesn't fix the problem?
A: There could be other issues with your car's security system. Have a mechanic diagnose the problem further.

Q: How do I find the Theft Control Module in my car?
A: The location varies depending on the vehicle. It's usually located under the dash or in the center console. Consult your car's repair manual or a mechanic for the exact location.

Q: What is the warranty on this part?
A: Warranty varies depending on the seller. Check the seller's warranty policy before you buy.

OEM Part Numbers:

• GM: 13508008, 13508017, 13510101, 13510106, 13523241, 13599810, 84298327
• Other: 13, 135, 1352

Fits Years: 2019 2020 2021