Are you tired of dealing with a faulty engine control module (ECM) in your 2003-2007 GMC Sierra 3500 Pickup? Do you struggle with poor engine performance, rough idling, and decreased fuel efficiency? Look no further! This pre-programmed 12589463 ECM is designed to restore your vehicle’s original OEM function seamlessly. With its advanced technology and precise programming, this module will get your truck running like new again.
- Restores original ECM function for smooth operation
- OEM-equivalent build ensures long-lasting reliability
- Pre-programmed to your VIN—no dealership visits needed
- Includes 1-year warranty for peace of mind
- Easy DIY install with basic tools (tips: disconnect battery first to avoid shorts)
- Outperforms worn OEM without modifications
- Compatible with Sierra 3500 Pickup variants (expand from data, e.g., engine sizes like 6.0L)
No more sluggish acceleration on highways or rough idling in the morning. This ECM replacement will have you driving with confidence and reliability. Unlike failing factory modules triggering codes, this restore efficiency and performance. Pair it with a diagnostic tool for optimal results—here’s how: use a code reader to diagnose before swapping, and ensure all connections are secure during installation.
Important Installation Notes
Please note that after installation, you may need to perform a relearn procedure using GM systems like Tis2web/Techline Connect. This ensures security features align perfectly with your vehicle’s system. Additionally, end-users are responsible for relearns/setup like injector/crankshaft variation. Please consult the user manual or contact our support team for guidance.
Order your pre-programmed ECM today and rediscover reliable driving in your 2003-2007 GMC Sierra 3500 Pickup!
This part will fit these makes and models with these options
2003 – 2007 GMC SIERRA 3500 PICKUP (engine sizes like 6.0L, including variants)