2018, Xts, Engine Control Module, 12686383, Programmed To Your VIN, VIN ECM PCM,

Restore Your Cadillac’s Performance

Get a reliable, VIN-programmed Engine Control Module for your 2018 XTS. This ECM arrives with the latest GM software, ready for installation and a final security relearn. Eliminate check engine lights and running issues. Provide your VIN at checkout to get back on the road fast!

$279.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-10246-28 Categories: ,
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Is Your Cadillac XTS Running Poorly? The ECM Might Be the Culprit.

If your 2018 Cadillac XTS is experiencing perplexing issues like stalling, a persistent check engine light, rough idling, or even a no-start condition, the root cause is often a failing Engine Control Module (ECM). As the central computer for your vehicle’s engine, the ECM controls everything from fuel mixture and ignition timing to transmission shifting and emissions. When it fails, it can create a cascade of problems that are frustrating and difficult to diagnose. This isn’t just an inconvenience; it’s a critical component failure that compromises your vehicle’s performance, reliability, and fuel efficiency.

Don’t let a faulty computer keep your luxury sedan off the road. We offer a direct-fit, reliable solution with this genuine GM Engine Control Module, part number 12704475 (interchangeable with 12692069, 12680656, 12686383, and 12688528). The key to our service is that we program the module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships. This ensures it has the correct calibration and the latest software updates from General Motors, addressing potential factory bugs and optimizing performance for your exact vehicle configuration.

From the Diagnostic Bay

We had a 2018 Cadillac XTS with the 3.6L engine towed in last month. The owner was frustrated because it would randomly stall at stoplights and had an intermittent check engine light with a dozen unrelated codes. Two different shops had replaced sensors without success. After confirming power and grounds to the ECM were good, we suspected the module itself was failing internally. Instead of a lengthy and expensive diagnostic process at the dealer, we installed one of our VIN-programmed ECMs. After performing the required security relearn, the car started perfectly. All the ghost codes vanished, the engine ran smoothly, and the customer was back on the road the same day. It’s a classic case of how a faulty ECM can mimic many other problems.

Solving Your Issues with a Programmed 2018 Cadillac XTS ECM

Replacing a modern ECM isn’t as simple as swapping a part. The module is tied to your vehicle’s security system. Our pre-programming service handles the most complex part, matching the software to your VIN. However, upon installation, a final ‘handshake’ with your vehicle’s security system is required. This is known as a Vehicle Theft Deterrent (VTD) relearn. This procedure is a mandatory step and is the responsibility of the installer. It typically requires a professional-grade scan tool with access to GM’s programming software (like Tis2web or Techline Connect). Other procedures, such as a crankshaft variation relearn or injector flow rate programming, may also be necessary depending on your vehicle’s specific needs.

Common Symptoms of a Failing ECM

  • ✔ Persistent Check Engine Light (CEL) with various fault codes.
  • ✔ Engine stalling or shutting off unexpectedly while driving.
  • ✔ No-start or hard-start conditions where the engine cranks but won’t fire.
  • ✔ Noticeable decrease in fuel economy.
  • ✔ Rough or erratic engine idling.
  • ✔ Poor acceleration and overall loss of power.
  • ✔ Communication errors when trying to use a diagnostic scan tool.
  • ✔ Unexplained transmission shifting problems.

By choosing our VIN-programmed 2018 Cadillac XTS ECM, you are getting a component that is prepared for your vehicle, significantly simplifying the replacement process. Just provide your VIN during checkout, and we’ll handle the software side. Get your Cadillac performing like new again with this essential, high-quality engine computer.

Frequently Asked Questions

Is this ECM a plug-and-play part?

It is pre-programmed to your VIN, which handles the most complex step. However, it is not fully plug-and-play. You MUST perform a Vehicle Theft Deterrent (VTD) relearn after installation for the vehicle to start. Other relearns, like for the crankshaft position sensor, may also be required.

How do I provide my VIN for programming?

After you complete your purchase, you will need to send us your 17-digit VIN. We will provide clear instructions on how to do this. We cannot ship the part until we have programmed it with your VIN.

What tools are needed to complete the installation?

You will need standard hand tools to physically replace the module. For the required security relearn procedure, you or your mechanic will need a professional diagnostic tool with access to GM’s Tis2web or Techline Connect software.

Will this ECM fit other vehicles besides the 2018 Cadillac XTS?

Yes, this ECM is compatible with a wide range of 2018-2019 GM vehicles, including the Corvette, Silverado/Sierra 1500, Escalade, Tahoe, Suburban, and Express/Savana vans. Please check the detailed fitment list on this page to confirm compatibility with your specific model and options.

What if my part number is slightly different?

This ECM, part number 12704475, is a direct replacement for several other part numbers, including 12692069, 12680656, 12686383, and 12688528. As long as your original part number is on this list, this module will work for your vehicle once programmed.

Year
Genuine OEM

Yes

Interchange part number

Condition

Seller refurbished

Year

2018

Model

XTS

Make

Brand

GM

MPN

12686383

Manufacturer Part Number

, , , ,

Manufacturer Warranty

1 Year

Hardware Type

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