Are you tired of dealing with a faulty engine control module in your 2016-2018 GMC Sierra 1500 Pickup? Do you struggle with poor performance, rough idling, and frustrating check engine lights? This pre-programmed 12678815 engine control module is the perfect solution to restore your vehicle’s original OEM function. With this replacement part, you’ll enjoy seamless operation, improved fuel efficiency, and a significant reduction in emissions.
- Restores original engine control module 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 various Sierra 1500 Pickup variants, including those with different engine sizes like 5.3L.
No more sluggish acceleration on highways or rough idling in traffic. This replacement module ensures your vehicle runs like new again. Unlike failing factory modules that trigger codes and decrease efficiency, this pre-programmed ECM restores optimal performance. For the best results, pair it with a diagnostic tool to identify any underlying issues before installation.
Important: Upon installation, if the vehicle does not start, a theft relearn will be required using the GM programming system Tis2web/Techline Connect. This is the responsibility of the end-user. Additionally, other relearns or setup procedures like injector setup and crankshaft variation relearn may be necessary.
Important Installation Notes
Before installing this engine control module, ensure you have a basic understanding of automotive electronics and follow proper safety protocols to avoid any damage or injury. This replacement part is programmed specifically for your vehicle’s VIN, but it’s essential to verify the correct installation and calibration procedures.
This part will fit these makes and models with these options
2016-2018 GMC Sierra 1500 Pickup (LH front engine compartment), ID 12674472. This part is also compatible with other GM models, including Escalade, Tahoe, Yukon, CTS, Corvette, Suburban, Silverado 1500 Pickup, and more.
Order your pre-programmed engine control module today and rediscover reliable driving in your GMC Sierra 1500 Pickup!