Restore Peak Performance to Your Cadillac DTS
Is your 2006 Cadillac DTS suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty ECM can cripple a perfectly good engine. The ECM is the brain of your vehicle, managing everything from fuel mixture and ignition timing to transmission shifts. When it fails, the symptoms can be unpredictable and difficult to diagnose, often leading to costly and unnecessary repairs.
This isn’t just a replacement part; it’s a complete, reliable solution. We take the guesswork and hassle out of the repair by providing a high-quality 2006 DTS Engine Control Module that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). We install the latest GM-certified software updates, ensuring your engine operates with optimal efficiency, fuel economy, and emissions performance. This means you can skip the expensive trip to the dealership for programming—a step that can often cost hundreds of dollars on its own.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2006 Cadillac DTS that came into my bay with an intermittent stalling problem that no one could figure out. The owner had already replaced the crank sensor and the throttle body based on codes that would pop up and disappear. After hours of chasing wires, I hooked up my scope to the ECM’s main processor outputs. Sure enough, under load, the processor would momentarily drop its signal—a classic sign of internal heat-related failure. A new, properly programmed ECM fixed it instantly. This highlights why replacing the ECM is often the correct fix for bizarre, multi-symptom electrical problems that seem to have no other source.
Is Your Cadillac DTS Showing These Signs?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention:
- ✔ Check Engine Light is on with no clear cause
- ✔ Engine cranks but refuses to start
- ✔ Unexplained drop in fuel economy
- ✔ Vehicle stalling or running rough, especially when warm
- ✔ Hesitation or stumbling during acceleration
- ✔ Automatic transmission shifting erratically or harshly
- ✔ Diagnostic Trouble Codes (DTCs) related to internal module failure, such as P0601, P0606, or communication errors like U0100
A Straightforward Guide to Your DTS ECM Swap
Installing your new 2006 DTS Engine Control Module is a job most DIY enthusiasts can handle with basic tools. Our VIN programming makes it a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
- Locate the ECM: On the 2006 Cadillac DTS, the Engine Control Module is typically located in the engine compartment. Check your service manual for the exact position, but it’s often near the air filter housing or on the firewall.
- Disconnect the Connectors: Carefully release the locking tabs on the electrical wiring harnesses and pull them straight out from the module. Never force them. Inspect the connectors for any corrosion or damaged pins.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the mounting hardware, as you will need it for the new module.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new ECM until the locking tabs click into place. Reconnect the negative battery terminal.
- Final Steps: Some vehicles may require a security relearn procedure, which can often be done by cycling the key. Turn the ignition to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeat two more times before starting the engine.
Verified Vehicle Compatibility
This ECM, part number 12602044, is a direct replacement for a wide range of General Motors vehicles. It is interchangeable with service numbers 12590032, 12603530, 12605843, 12607096, 12630457, and 19210737. Please confirm your vehicle is on the list below. After purchase, simply provide your VIN, and we’ll handle the rest.
Fits Select Models Including:
- ✔ 2006 Cadillac DTS
- ✔ 2005 Cadillac DeVille (ID 12590032)
- ✔ 2006 Cadillac STS (4.4L)
- ✔ 2006 Cadillac XLR (4.4L)
- ✔ 2008-2009 Buick Allure / LaCrosse (5.3L)
- ✔ 2006-2008 Pontiac G6 (3.6L)
- ✔ 2006 Chevrolet Impala / Monte Carlo (3.5L, 3.9L)
- ✔ 2007-2008 GMC Envoy / Chevrolet Trailblazer (5.3L)
- …and many more GM, Isuzu, and Saab models. Please use the fitment checker to confirm for your specific vehicle.
Frequently Asked Questions
What do you mean by ‘programmed to my VIN’?
We load your vehicle’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before shipping. This ensures the ECM communicates perfectly with your car’s other systems, just like a new one from the dealer, but without the extra cost and hassle of a dealership visit.
Do I need to do anything else after installation?
In most cases, no. The module is ready to install. However, some vehicles may require a simple ‘security relearn’ or ‘CASE relearn’ procedure. The security relearn can often be done without special tools, and instructions can be found online or in your service manual.
Is this a reliable, long-term fix?
Absolutely. We address the common failure points of the original modules and use the most current, stable software from GM. This provides a durable and dependable solution to restore your vehicle’s performance and reliability.
Where do I find my VIN?
Your 17-digit VIN can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
How do I provide my VIN after purchase?
After you complete your purchase, you will receive instructions on how to send us your VIN. We cannot program and ship your module until we receive this information, so please provide it promptly to avoid delays.