Restore Peak Performance to Your Cadillac DTS
Is your 2009-2011 Cadillac DTS suffering from frustrating issues like stalling, rough idling, a persistent Check Engine Light, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the central computer of your vehicle. A faulty ECM can disrupt everything from fuel delivery and ignition timing to transmission shifting, making your luxury car feel unreliable. This isn’t just an inconvenience; it’s a critical component failure that needs a dependable solution.
We offer a straightforward, reliable fix. This Engine Control Module, part number 12630464, is the definitive solution to get your vehicle running correctly again. The best part? We handle the complex programming for you. Simply provide your vehicle’s VIN during checkout, and our technicians will flash the module with the latest, most stable GM software updates specific to your car. It arrives at your door ready for installation, eliminating the need for an expensive trip to the dealership for programming.
From the Diagnostic Bay: The Ghost in the Machine
I remember a 2010 Cadillac DTS that came into my shop with a laundry list of complaints. The owner was frustrated, having already replaced the throttle body and a few sensors based on scattered trouble codes. The car had intermittent stalling, hard shifts, and the traction control light would randomly illuminate. It felt like chasing ghosts. After confirming good power and ground at the ECM connector, we scoped the network lines and saw data dropouts. A failing processor inside the original ECM was corrupting communications across the car. Installing a properly programmed 2009-2011 DTS ECM didn’t just fix the stalling; it resolved all the other “unrelated” electronic issues instantly. It’s a powerful reminder that the ECM is the true conductor of your vehicle’s electronic orchestra.
Is Your Vehicle Showing These Symptoms?
- ✔ Check Engine Light is on with codes like P0601, P0606 (Internal Control Module Processor Error).
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Rough or unstable engine idle.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Automatic transmission shifts harshly or at the wrong times.
- ✔ Complete loss of communication with diagnostic scan tools.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow capacitors to discharge before starting work.
- ✔ Locate the ECM: On the Cadillac DTS, the ECM is typically located in the engine bay. Consult your vehicle’s service manual for the exact position.
- ✔ Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out from the old module. Never force them. Inspect the connectors for any corrosion or damage.
- ✔ Remove the Old Module: Unbolt the mounting hardware holding the original ECM in place and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- ✔ Reconnect Everything: Firmly plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- ✔ Perform Security Relearn: You may need to perform a security or key relearn procedure. This process typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the vehicle’s anti-theft system to recognize the new ECM.
Verified Vehicle Compatibility
This module is a direct replacement for service number 12630464 and is also interchangeable with part numbers: 12636659, 12639300, 1263605, 12628993, 12628911, 12625453, 12622175, and 12678512. It is guaranteed to fit the following vehicles:
- Cadillac DTS 2009-2011
- Cadillac CTS 2009 (6.2L)
- Cadillac SRX 2009 (4.6L)
- Cadillac STS 2009 (4.4L, 4.6L), 2010 (4.6L)
- Cadillac XLR 2009 (ID 12636659 or 12625453)
- Chevrolet Colorado 2009-2012 (2.9L, 3.7L)
- Chevrolet Corvette 2009 (ZR1)
- Chevrolet Trailblazer 2009 (6.0L)
- GMC Canyon 2009-2012 (2.9L, 3.7L)
- GMC Envoy 2009 (5.3L)
- Hummer H3 2009-2010 (3.7L)
- Buick Lucerne 2009-2011 (4.6L)
- Saab 9-7x 2009
Frequently Asked Questions
Do I need to do any programming myself?
No. We flash the module with the latest GM software using the VIN you provide. It arrives ready to be installed, though a vehicle security relearn procedure is typically required, which involves no special tools.
Where do I provide my VIN?
Please enter your 17-digit Vehicle Identification Number (VIN) in the designated box on the checkout page. We cannot process your order without it.
Is this a simple plug-and-play installation?
Yes, for the most part. After physically swapping the module, you will need to perform a standard security relearn procedure. This process is simple and can be found in many online resources or your vehicle’s owner manual.
What if my original part number is not 12630464?
Please check the list of interchangeable service numbers provided above. This module replaces several different part numbers, ensuring wide compatibility across the GM family of vehicles.
Will this fix my Check Engine Light?
If the Check Engine Light is caused by an internal failure of the ECM (common codes P0601-P0606), then yes, this part will resolve the issue. It’s always best to have a proper diagnosis to confirm the ECM is the root cause before ordering.