Restore Your Cadillac’s Signature Performance
Is your 2009-2011 Cadillac DTS suffering from frustrating issues like a persistent Check Engine Light, rough idling, unexpected stalling, or a noticeable drop in fuel economy? These are often hallmark signs of a failing Engine Control Module (ECM), the critical computer that manages your vehicle’s performance. Don’t let a faulty module compromise the smooth, luxurious ride you expect. This professionally programmed Cadillac DTS ECM 12639300 is the definitive solution to restore your car’s power, efficiency, and reliability.
Common Symptoms & Your Solution
A failing ECM can cause a cascade of problems that are often misdiagnosed. If you’re experiencing any of the following, your engine’s computer is the likely culprit:
- Erratic engine performance, including misfires or hesitation.
- Drastically reduced gas mileage.
- Difficulty starting the engine or a complete no-start condition.
- Check Engine Light (CEL) with codes related to module communication or internal processor failure (e.g., P0600-P0606).
- Unexplained transmission shifting issues.
Our pre-programmed ECM is the most efficient and reliable way to solve these issues. We take your vehicle’s 17-digit VIN and flash the module with the latest, most stable software updates directly from GM. This ensures that when the part arrives, it’s a perfect match for your vehicle’s specific configuration, eliminating the need for an expensive trip to the dealership for programming.
Features & Benefits
- โ VIN-Programmed for Your DTS: We flash this module with your vehicle’s specific VIN and the latest GM software updates. This ensures perfect compatibility and function right out of the box.
- โ Plug-and-Play Installation: Because it arrives pre-programmed, you can avoid expensive dealership programming fees and complex tool requirements. A straightforward installation gets you back on the road faster.
- โ Restores Peak Performance: A new brain for your engine means corrected fuel-air mixtures, precise ignition timing, and smooth transmission shifts, restoring the power and efficiency you expect from a Cadillac.
- โ Broad Compatibility: This unit is a direct replacement for a wide range of original service numbers, including 12636659, 12628993, 12625453, and more, making it a versatile solution for numerous GM vehicles.
- โ Warranty Protected: This unit is backed by our one-year replacement warranty.
Expert Insight: The Dealership Dilemma
Many owners believe the dealership is their only option for ECM replacement due to the complex programming involved. This often means towing fees, high labor rates, and a bill that can easily exceed a thousand dollars. Our service was created to solve this exact problem. We use the same GM-certified software as the dealership to program your specific Cadillac DTS ECM 12639300 before it even ships. You get a dealership-quality result without the dealership price tag or hassle, empowering you or your trusted mechanic to complete the job with confidence.
Frequently Asked Questions
How does the programming process work?
It’s simple. After you place your order, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians will use this VIN to flash the ECM with the correct GM-approved software and calibration files for your specific vehicle. It will arrive ready to be installed.
Will I need to do anything after installation?
In most cases, this is a direct plug-and-play installation. However, some vehicles may require a simple security relearn procedure, also known as a key-cycle relearn. This can typically be done without any special tools and instructions are widely available online or in your vehicle’s service manual.
Is this part compatible with other GM vehicles?
Yes, this ECM is compatible with a wide range of GM models and engines, as detailed in our fitment list. It replaces numerous service numbers, including 12636659, 12639300, and 12628993. Please verify your vehicle is on the list or contact us with your VIN to confirm perfect fitment.
How can I be sure this will fix my car’s problem?
This module will resolve any issue directly caused by a faulty ECM. We strongly recommend that you or your mechanic perform a thorough diagnosis to confirm the ECM is the point of failure before ordering. Common indicators are communication-related diagnostic trouble codes (DTCs) or specific internal processor fault codes.
What information do you need from me?
All we need is the 17-digit VIN from your vehicle. You can typically find this on your driver’s side dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.