If you’re dealing with a frustrating check engine light, poor performance, or a no-start condition in your 2006 Saturn ION, a failing Engine Control Module (ECM) is often the culprit. As a technician with over 20 years of experience, I’ve seen firsthand how a faulty ECM can cause a host of mysterious and intermittent issues. This isn’t just a replacement part; it’s a direct solution, arriving at your door fully programmed with the latest GM software updates specifically for your vehicle’s VIN.
Forget about expensive dealership visits for programming. We handle the complex part for you. Simply provide your VIN during checkout, and our experts will flash this module, making it a true plug-and-play fix. This process ensures that all engine parameters, fuel delivery, and transmission communications are perfectly calibrated for your car right out of the box. Restore the reliability and efficiency you depend on with a component you can trust.
A Technician’s Notebook: The Misleading Ground
I remember a 2006 Cobalt with the 2.4L—which uses a nearly identical ECM to the ION—that came into the shop with an intermittent no-start and a U0100 Lost Communication code. The previous mechanic had already replaced the module, but the problem persisted. Instead of just swapping parts again, we checked the fundamentals. After tracing the wiring diagrams, we found a corroded G105 ground on the engine block. A simple cleaning of the contact point fixed the issue permanently. It’s a crucial reminder: before condemning any module, always verify your main power and ground connections. A solid foundation is key to proper electronic function.
Is Your Saturn Showing These Signs?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, this module is the likely solution for your 2006 ION Engine Control Module problems:
- ✔ Check Engine Light (CEL) is illuminated with communication or processor codes (e.g., P0601, P0606, U0100).
- ✔ The engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Unexplained loss of power or erratic transmission shifting.
- ✔ Issues with other electronic systems that communicate with the ECM.
A Straightforward Guide to Installation
Installing your new ECM is a manageable task for a confident DIYer. Taking your time and following these steps will ensure a smooth process.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On the 2006 Saturn ION, the Engine Control Module is typically located in the left front of the engine compartment.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need it for the new installation.
- Install the New Module: Mount your new, pre-programmed ECM and securely tighten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Final Step: In some cases, a security or crank relearn procedure may be required, which can often be done without special tools. Check your vehicle’s service manual for specific instructions. You are now ready to start the vehicle.
Verified Vehicle Compatibility
This ECM, part number 19210737, is a direct replacement for a wide range of GM vehicles. It is interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. Please match your original part number or confirm your vehicle is on the list below to guarantee fitment.
ALLURE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
COLORADO 08 Electronic Control Module; (RH firewall)
ENVOY 07-09, TRAILBLAZER 07-09, ISUZU ASCENDER 08, SAAB 9-7X 07-08 (various engines, check ID)
G6 06-09, MALIBU 06-10, AURA 08-09 (various engines, check ID)
IMPALA 06-09, MONTE CARLO 06, LACROSSE 08-09, GRAND PRIX 08 (various engines)
CADILLAC DTS 06-08, DEVILLE 05, CTS 06, STS 06-08, XLR 06-09 (check ID)
UPLANDER, MONTANA, RELAY, TERRAZA 06-09 (3.9L)
ENCLAVE 08, ACADIA 07-08, OUTLOOK 08, VUE 08-10 (various engines)
HHR 06, COBALT 06, PURSUIT 06 (2.4L)
SOLSTICE 06
CANYON 08, ISUZU I-290/I-370 08, HUMMER H3 08
…and many more. Please use the compatibility tool or contact us with your VIN to confirm.
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before shipment. This 2006 ION Engine Control Module will arrive ready for installation, flashed with the latest GM software updates using your specific VIN.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory calibration file for your car. This ensures perfect compatibility with your engine, transmission, and factory options, preventing performance issues and error codes.
Is this a simple plug-and-play installation?
Yes, for most vehicles. Once you install the module and reconnect the battery, you can start the car. Some vehicles may require a simple security relearn procedure, which can typically be performed without any special scan tools.
Will this fix my car’s specific problem?
This module corrects issues directly caused by a faulty ECM, such as internal processor faults (P0601), communication errors (U0100), and erratic engine behavior. While it’s a very common failure point, we always recommend a proper diagnosis to confirm the ECM is the root cause before ordering.
What does ‘interchangeable service number’ mean?
GM often releases updated versions of a part under a new number. The listed service numbers (e.g., 12590032, 12607096) are all functionally identical to 19210737 when programmed correctly. We supply the latest available hardware with the correct software for your vehicle.