
591-12789 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $84.47 | Top Pick! Condition is Used, 2018-2021 GMC Terrain Body Control Module BCM OEM, FREE SHIPPING | 98.7% |
![]() | $84.47 | Top Pick! Condition is Used, 2018 2019 2020 2021 GMC Terrain Body Control Module BCM OEM, FREE SHIPPING | 98.7% |
![]() | $84.47 | Condition is Used, 2018 2019 2020 2021 GMC Terrain Body Control Module BCM OEM, FREE SHIPPING | 98.7% |

Introducing the GMC 591-12789 Chassis ECM (Electronic Control Module) Body Control BCM (Body Control Module) Center Console with NKC 18-21 Terrain, an advanced automotive electronic component designed to regulate various electrical systems in your GMC vehicle. This BCM centers around the console, ensuring optimal control and functionality of your vehicle's climate, power windows, and other related features.
The 591-12789 GMC Chassis ECM Body Control Module is a state-of-the-art microcontroller that receives and processes input signals from various sensors in your vehicle. It then generates appropriate output signals to control various electrical systems such as the power windows, climate control, and other comfort features. This component plays a crucial role in maintaining the overall performance and functionality of your vehicle's electrical systems.
The NKC 18-21 Terrain feature in this BCM is specifically designed for GMC vehicles manufactured between 2018 and 2021. It offers advanced control capabilities tailored to the specific requirements of these vehicles. This feature ensures seamless integration between the BCM and the vehicle's other electronic systems, enabling enhanced performance and reliability.
The 591-12789 GMC Chassis ECM Body Control BCM Center Console with NKC 18-21 Terrain is a high-quality, OEM (Original Equipment Manufacturer) replacement part. It is meticulously designed and manufactured to ensure a perfect fit and function in your GMC vehicle. This component is engineered to meet or exceed the original equipment specifications, ensuring the highest level of performance and reliability.
The 591-12789 GMC Chassis ECM Body Control BCM Center Console with NKC 18-21 Terrain is an essential upgrade for any GMC vehicle owner seeking to maintain the optimal performance and functionality of their electrical systems. With its advanced control capabilities and seamless integration with other vehicle systems, this component is the ideal choice for ensuring a comfortable and reliable driving experience.
In summary, the GMC 591-12789 Chassis ECM Body Control BCM Center Console with NKC 18-21 Terrain is a sophisticated electronic component designed to regulate various electrical systems in your GMC vehicle, focusing on the center console area. Its advanced control capabilities, tailored to GMC vehicles manufactured between 2018 and 2021, ensure seamless integration with other vehicle systems, enabling enhanced performance and reliability. This OEM replacement part is a must-have for any GMC vehicle owner seeking to maintain the optimal performance and functionality of their electrical systems.
The GMC 591-12789 Chassis ECM (Electronic Control Module) Body Control BCM (Body Control Module) Center Console with NKC (Networked Keyless Entry and Start) 18-21 Terrain is a complex automotive component that plays a crucial role in managing various electrical systems in your vehicle. Here are some potential pros and cons of buying this part:
Pros:1. Improved Convenience: This ECM and BCM combined unit comes with NKC technology, which offers keyless entry and start features. This adds a significant level of convenience to the vehicle owner.
2. Enhanced Security: With NKC, your vehicle becomes more secure as you no longer need to physically insert a key to start your car.
3. Better Integration: Having the ECM and BCM together in one unit can result in better communication and integration between different systems in your vehicle, leading to improved performance and reliability.
4. Potential Cost Savings: Buying this unit as a complete package may save you money compared to purchasing each component individually.
Cons:1. Complexity: This part is quite complex, and its installation requires a certain level of automotive expertise. Improper installation could lead to various issues.
2. Expensive: The price point for this part is relatively high due to its advanced features and complexity.
3. Potential Compatibility Issues: Ensure that this part is compatible with your specific vehicle model and year before making a purchase.
Ending Conclusion:The GMC 591-12789 Chassis ECM Body Control BCM Center Console with NKC 18-21 Terrain is a sophisticated automotive component that offers several advantages, including improved convenience, enhanced security, better integration, and potential cost savings. However, its complexity and high cost are significant drawbacks. Before making a decision, make sure you have a clear understanding of your vehicle's requirements and the installation process involved.
Recommendation:If you are confident in your automotive expertise and feel that the benefits of this component outweigh the potential challenges, then it could be a worthwhile investment. However, if you are unsure or lack the necessary experience, it might be wise to consider having a professional mechanic or dealership handle the installation to ensure proper functionality and avoid any potential issues.
Details:
specifications perfoelectric:
- for models: Terrain
- for years: 2018–2021
- brand: Gmc Truck
- part type: Ecm Control Console
- genuine oem: Yes
- ipn: 591-12789
- make: Gmc
- year: 2020
- manufacturer warranty: 6 Month
returns perfoelectric:
- policy: returns accepted
- time: 60 days
- paid by: seller
offer perfoelectric:
- price: $84.47
- item condition: Used
- options: ship-to-home
- sold #: 16
- best offers: true
- started: september 15, 2025
- availability: in stock
- in stock #: 3
general perfoelectric:
- category: Auto Parts > Electrical Components
shipping perfoelectric:
- class: expedited
- transit: 4-10 days
- type: fixed
- service: usps priority mail
- carrier: usps
payments perfoelectric:
- wallet: apple-pay
- other
- credit card: diners-club
seller perfoelectric:
- # reviews: 1696
- rating: 94.4%
- city: brownwood, texas
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