Is Your Cadillac Experiencing Frustrating Engine Problems?
The Engine Control Module (ECM), often called the vehicle’s main computer, is the brain behind your engine’s performance, efficiency, and emissions. When it starts to fail in a vehicle like your 2006 Cadillac CTS, it can cause a cascade of confusing and intermittent issues that are difficult to diagnose. From a persistent Check Engine Light to stalling and poor fuel economy, a faulty ECM can make your driving experience a nightmare. This replacement Engine Control Module, part number 19210737, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We once had a 2006 CTS V-Series in the shop with a ghost of a problem. The owner complained of random stalling at traffic lights and occasional rough shifting, but there were no consistent trouble codes. We checked everything—fuel pressure, sensors, wiring harnesses—and found nothing. On a hunch, we monitored the live data stream from the ECM and noticed erratic sensor readings that didn’t make sense. We swapped in a known-good, programmed module, and the car ran perfectly. The original ECM had internal circuit failure that only acted up when warm, causing headaches for the owner and defying standard diagnostics. This highlights how a failing module can create bizarre symptoms that seem unrelated to the computer itself.
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Unexplained drop in fuel mileage.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough idling or engine misfires.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Communication errors with diagnostic scan tools.
The Plug-and-Play Solution for Your 2006 CTS Engine Module
Don’t let a faulty computer keep you off the road or force you into an expensive dealership visit. This module is a direct-fit replacement, but its key benefit is our professional programming service. When you place your order, you simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the module with the latest, most up-to-date software straight from GM, ensuring it is perfectly matched to your vehicle’s specific configuration, options, and emissions standards. This means no extra programming fees and no need for specialized dealer equipment. The module arrives at your door ready for installation.
This unit is a direct replacement for service number 19210737 and is also interchangeable with a wide range of other GM part numbers, including 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. While this listing is focused on the 2006 CTS Engine Module, it also fits dozens of other GM vehicles. Please verify your original part number to ensure compatibility.
Frequently Asked Questions
Do I need to get this module programmed?
No. The main benefit of our service is that we program the module for you before it ships. Simply provide your vehicle’s VIN during or after checkout, and we will flash it with the correct factory software for your specific vehicle. It arrives ready to install.
What is a VIN and where do I find it?
The VIN (Vehicle Identification Number) is a unique 17-digit code for your car. You can typically find it on a plate on the 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.
Is any other procedure needed after I install it?
In many cases, the module is plug-and-play. However, some GM vehicles may require a simple security relearn procedure (often called Passlock or Passkey) or a Crankshaft Position Sensor relearn. These procedures can often be performed without special tools and instructions can be readily found online or in a service manual.
How can I be sure this is the correct part for my car?
The best way to ensure compatibility is to match the service number from your original ECM to one of the numbers listed (19210737, 12590032, 12602044, etc.). If you are unable to find the number or are unsure, please contact us with your VIN before ordering, and we will be happy to verify the correct fitment for you.
What if my original part number is not on your list?
This module replaces several common service numbers. However, if your number is not listed, it may not be the correct part. We recommend contacting us with your VIN and original part number to confirm compatibility before making a purchase.