Is your 2017-2018 GMC Sierra Denali 1500 experiencing sluggish acceleration or stalling during family road trips? This VIN-programmed 12674052 Engine Control Module (ECM) is the solution to restore OEM performance seamlessly. With its pre-programmed calibration, this ECM ensures your vehicle runs smoothly and efficiently, just like when it rolled off the assembly line.
- 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 Denali 1500 variants, including engine sizes like 5.3L and 6.2L.
No more sluggish acceleration on highways or stalling during daily commutes. This ECM is designed to work in harmony with your vehicle’s systems, ensuring a reliable driving experience. Unlike failing factory modules triggering codes, this restoration ensures efficiency and performance. Pair it with a diagnostic tool for optimal results—here’s how: use a code reader to diagnose issues before swapping the ECM, and consult a repair manual for specific installation instructions.
Important Installation Notes
Upon installation, if the vehicle does not start, a theft relearn will need to be done using the GM programming system Tis2web/Techline Connect. It is the buyer’s responsibility to perform this procedure, as well as any other relearns or setup procedures (e.g., injector setup, crankshaft variation relearn). Please note that this ECM is programmed/flashed for your vehicle with the newest updates from GM using your VIN to match your vehicle. Provide us with your VIN after purchase so we can program the ECM before shipping.
Order your pre-programmed ECM today and rediscover reliable driving in your 2017-2018 GMC Sierra Denali 1500!
This part will fit these makes and models with these options
2017 – 2018 GMC SIERRA DENALI 1500 Engine Control Module (LH front engine compartment), ID 12674052. Cross-references: 12692068, 12704476, 12686382, 12674472, and 12678815.