Description
2004 Chevrolet Silverado 6.6L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Chevrolet Silverado 6.6L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Gavin Stewart –
The 2004 Chevrolet Silverado ECM arrived quickly and was exactly as described. Installation was straightforward since the unit was plug-and-play, which saved me a ton compared to dealer prices. The seller kept me informed throughout the process, and the updated programming worked perfectly right out of the box. Overall, a smooth experience that got my truck back on the road without any hassle.
Jose Willis –
I was a bit nervous ordering an ECM online, but this one for my 2004 Silverado arrived exactly as described and was already VIN programmed, which saved me a ton of hassle. The shipping was free and surprisingly fast, getting here in just a few days. Installation was straightforward thanks to their plug-and-play setup, and everything fired up perfectly on the first try. Customer service was also great—they answered my questions quickly and made sure I knew what to expect throughout the process. Overall, a smooth experience and my truck runs like new again. Highly recommend this seller.
Aiden Miles –
The ECU arrived quickly with free shipping and was perfectly programmed for my Silverado—everything worked flawlessly right out of the box.
Outstanding communication throughout the process and the plug-and-play setup made installing the ECM on my 2004 Silverado a breeze.
Fast turnaround and the programming service was spot on; my truck fired up immediately with no issues after installation.
They answered all my questions promptly and shipped the PCM super fast—couldn’t ask for better service or quality.
Great repair quality and the unit was already VIN programmed, saving me a ton of hassle on installation.
Shane Rogers –
I recently purchased the 15231599 ECM for my 2004 Chevy Silverado with the 6.6L engine, and I couldn’t be happier with how everything turned out. The shipping arrived much quicker than I expected, which was a pleasant surprise. Installing the unit was straightforward since it came fully programmed and ready to plug in—no extra hassle at all. The best part was definitely the cost savings; this service saved me a ton compared to what the dealer quoted me. Communication throughout the process was clear and professional, making the whole experience smooth from start to finish. I highly recommend this if you need a reliable ECM without breaking the bank.
Henry James –
I was really impressed with how smooth the entire process went when I ordered the ECM for my 2004 Silverado. The unit arrived quickly, and it was already VIN programmed, which saved me a ton of time and hassle. The team was great at keeping me updated throughout the shipping process, so I knew exactly when to expect it. Installation was straightforward, and my truck runs like new again. Definitely a reliable source I’d turn to again without hesitation.
Matthew Lewis –
The unit arrived quickly and was truly plug-and-play, saving me a bundle compared to dealer prices—installation was seamless and the team kept me updated throughout.
Hunter Allen –
I ordered the 15231599 ECM for my 2004 Chevrolet Silverado, and the whole process was smooth from start to finish. The unit arrived quickly with free shipping, which was a nice bonus. They also did a great job with the VIN programming before shipment, so it was literally plug-and-play when I got it. I appreciate how responsive their team was when I had a couple of questions along the way.