Is your 2003-2007 GMC Sierra 1500 Pickup struggling with a faulty engine control module (ECM)? Are you tired of dealing with poor performance, reduced fuel efficiency, and annoying check engine lights? Look no further! Our pre-programmed 12589463 ECM is designed to restore your vehicle’s original OEM function, ensuring smooth operation and reliable performance.
- Restores original ECM function for seamless 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 1500 Pickup variants (expand from data, e.g., engine sizes like 5.3L).
Imagine driving your Sierra 1500 Pickup through rugged terrain without hesitation, thanks to our reliable ECM replacement. No more sluggish acceleration on highways or frustrating check engine lights. Our pre-programmed module ensures efficient fuel consumption and optimal performance.
Purchase with confidence knowing that our ECM is compatible with various GMC models, including the Sierra 3500 Pickup, Yukon XL 2500, and more (see below for full list). Don’t let a faulty ECM hold you back any longer. Order your pre-programmed 12589463 ECM today and rediscover reliable driving in your GMC Sierra 1500 Pickup!
Important Installation Notes
Please note that reprogramming the ECM requires a valid VIN, which will be provided to us after purchase. It’s essential to follow proper installation procedures to avoid any damage or issues with your vehicle’s systems.
In some cases, additional setup may be required, such as injector setup or crankshaft variation relearn. These procedures ensure that your vehicle’s security features align perfectly and prevent potential errors.
This part will fit these makes and models with these options
2003 – 2007 GMC Sierra 1500 Pickup (classic style, creased door skin), w/o hybrid option; w/o 4.3L engine.