Is Your GM Truck or SUV Running Rough?
A failing Engine Control Module (ECM) can be the source of countless frustrating and hard-to-diagnose issues. If you’re dealing with a persistent check engine light, poor fuel economy, stalling, hesitation, or even a no-start condition, your vehicle’s computer may be the culprit. This fully programmed ECM is the reliable, straightforward solution to get your dependable GM vehicle back on the road and running like it should.
Common Symptoms & Your Solution
A faulty ECM, also known as a PCM, can cause a wide range of problems that can be mistaken for other component failures. By replacing your old unit with this pre-programmed module, you can resolve these issues directly. Look out for symptoms like:
- Unexplained Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) such as P0601, P0602, or P0606
- Poor or erratic automatic transmission shifting
- Engine stalling, sputtering, or misfiring
- Noticeable drop in fuel mileage
- Vehicle failing to start intermittently or at all
This Programmed 9355699 ECM is the definitive fix for these problems, arriving at your door ready for a simple, no-fuss installation.
Features & Benefits
- ✔ Ready to Install: This computer is professionally programmed to your vehicle’s specific VIN. This ensures compatibility with your engine, transmission, and factory options right out of the box.
- ✔ Updated Software: We flash the module with the latest software updates available from GM. This can improve performance, shifting logic, and fuel efficiency over the original programming.
- ✔ Cost-Effective Solution: Get a dependable, genuine OEM part without the high cost and programming fees of a new dealership unit.
- ✔ Restored Dependability: Eliminate frustrating electrical gremlins and restore the performance and reliability you count on from your truck or SUV.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty, ensuring you get a dependable part.
An Expert’s Note on VIN Programming
“Many people grab a computer from a salvage yard hoping for a cheap fix, only to find it won’t work. That’s because on these GM vehicles, the ECM is not just a part—it’s the brain, and it’s coded specifically to the VIN it came from. It holds information about the engine size, transmission type, and anti-theft system. Our process of programming your specific VIN to this module before shipping isn’t just a convenience; it’s the critical step that makes the installation a success. It ensures all systems communicate correctly, saving you a trip to the dealer and the headache of a non-running vehicle.”
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you before the part is shipped. This Programmed 9355699 ECM will arrive ready for installation. In some cases, a simple security relearn procedure may be required, which can be done without any special tools.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive it. You can typically find your VIN on your vehicle’s dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your insurance/registration documents.
Is this a new part?
This is a high-quality, used OEM (Original Equipment Manufacturer) computer that has been sourced from a salvaged vehicle, inspected, and tested. It is then programmed with the latest software for your specific vehicle.
What if my vehicle has an anti-theft system like VATS or Passlock?
Our VIN programming process addresses the vehicle’s factory anti-theft system. For most vehicles on the fitment list, the unit will be plug-and-play. Some models may require a simple, key-on/key-off security relearn procedure after installation, which takes about 30 minutes and does not require a scanner.
How can I be sure my old ECM is the problem?
While the symptoms listed are very common for ECM failure, it’s always best to have a proper diagnosis performed. Common trouble codes pointing to a bad computer include P0601 (Internal Control Module Memory Check Sum Error) and P0606 (ECM/PCM Processor Fault). If you’re unsure, consulting with a professional mechanic is recommended.