Restore Peak Performance to Your GM Vehicle
Is your 2008-2009 Cadillac CTS, STS, or another compatible GM vehicle experiencing perplexing issues like a persistent check engine light, stalling, rough idling, or poor fuel economy? These are classic symptoms of a failing Engine Control Module (ECM), the central computer that manages your engine’s performance. A faulty ECM can be a source of constant frustration, leading to failed emissions tests and an unreliable vehicle. This direct-fit Engine Control Module, part number 19300016, is the definitive solution to get your vehicle running smoothly and efficiently again.
From the Diagnostic Bay
We recently had a 2009 GMC Acadia in the shop with an intermittent misfire that the owner had been chasing for months. He had already replaced all the spark plugs and ignition coils, spending a significant amount of money with no success. The check engine light would come and go. After connecting our diagnostic tools, we noticed that the fuel injector pulse on cylinder 3 was erratic. The wiring was fine, and the injector tested good. The culprit was an internal failure in the original ECM’s driver circuit. By installing a correctly programmed module like this one, we resolved the issue in under an hour, saving the customer from further guesswork and unnecessary parts expenses.
Common Symptoms of a Failing ECM
If you’re experiencing any of the following issues, a failing engine computer is the likely cause. Replacing it with our pre-programmed module can resolve these problems:
- ✔ Persistent Check Engine Light (CEL) that won’t clear or returns with various codes.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ No-start or hard-to-start conditions, especially when the engine is warm.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or erratic engine idle.
- ✔ Harsh or incorrect shifting from the automatic transmission.
- ✔ Loss of communication with the OBD-II port, preventing diagnostics.
Why Our Programmed 2008-2009 CTS ECM is the Smart Choice
The biggest challenge when replacing a modern ECM is the complex programming required to make it communicate with your specific vehicle. Our service eliminates this obstacle completely. When you order from us, we use the Vehicle Identification Number (VIN) you provide to flash the module with the latest, most stable software updates directly from General Motors. This ensures perfect compatibility and optimal performance, right out of the box. You get a component that is precisely matched to your car’s factory specifications, including its engine, transmission, and emissions equipment. This is not a generic, one-size-fits-all part; it’s a tailored solution for your vehicle.
Plug-and-Play Installation
By providing a module that is already programmed, we save you a trip to the dealership and the high costs associated with their programming services. Installation is straightforward for a DIY mechanic or any professional technician. Simply disconnect the battery, locate and swap the old module with the new one, and reconnect the battery. In some cases, a simple security or crankshaft position sensor relearn procedure may be necessary, which can often be completed without specialized tools. This pre-programmed 2008-2009 CTS ECM is designed to make your repair as simple and cost-effective as possible.
Guaranteed Fitment
This module is a direct replacement for part numbers 12623325, 12628387, 12605672, 12630594, and 19300016. It is confirmed to fit the following vehicles:
- 2008 Cadillac CTS: Electronic Control Module; (RH front engine compartment), (3.6L), VIN V (8th digit)
- 2009 Cadillac CTS: Electronic Control Module; (RH front engine compartment), 3.6L, VIN V (8th digit)
- 2008 Cadillac STS: Electronic Control Module; (RH engine), 3.6L
- 2009 Cadillac STS: Electronic Control Module; (RH engine), (3.6L)
- 2009 GMC Acadia: Electronic Control Module; (behind fan shroud)
- 2009 Chevrolet Traverse: Electronic Control Module; (behind fan shroud)
- 2009 Saturn Outlook: Electronic Control Module; (behind fan shroud)
- 2009 Buick Enclave: Electronic Control Module; (behind fan shroud)
Don’t let a faulty computer keep you off the road. Order this fully programmed 2008-2009 CTS ECM today and restore the reliability and performance you expect from your vehicle.
Frequently Asked Questions
Do I need to have this ECM programmed?
No. This ECM comes fully pre-programmed to your vehicle’s specific VIN. You must provide your VIN after purchase so we can load the correct GM software and calibration files before shipping it to you. This makes the installation process much simpler.
Where is the ECM located on my 2008-2009 Cadillac CTS?
On the 2008-2009 Cadillac CTS, the Engine Control Module is typically located in the engine compartment on the right-hand (passenger) side. For other models like the Acadia or Traverse, it is often found behind the fan shroud. Always consult a service manual for your specific vehicle to confirm the location before beginning work.
Is this a simple plug-and-play installation?
Because the module arrives programmed, it is largely a plug-and-play process. You will need to disconnect the vehicle’s battery, remove the old ECM, install the new one, and reconnect the battery. Some vehicles may require a security relearn or other minor relearn procedures, which can often be done without special scan tools.
How do I provide my VIN?
After you complete your purchase, we will contact you for your 17-digit Vehicle Identification Number (VIN). You can also add it as a note during checkout. We cannot program and ship the module without this information.
What happens if I install an ECM that isn’t programmed for my car?
Installing a non-programmed or incorrectly programmed ECM will almost certainly result in a no-start condition. The vehicle’s anti-theft system will not recognize the module, and it will not have the correct data to manage the engine and transmission, leading to serious performance issues or preventing the engine from running at all.