fits model: Mt1, 2500. make: Chevrolet. year: 2008–2009.

( Brand: Chevrolet Truck ), ( Manufacturer Part Number: EXPRESS35 ), ( Part Type: Transmission ), ( Conditions Options: At, Rwd, Tested El ), ( Genuine Oem: Yes ), ( Ipn: 400-00591 )
The Chevrolet 400-00591 Automatic Transmission is a high-performance unit designed specifically for 2000-2009 Chevrolet 2500 vans. This transmission is an upgrade from the standard 4L60-E and is known as the 4L80-E. The MT1 MCP (Manual Valve Body Control Protocol) ensures smooth and efficient shifting, while the Optimum Calibrated Performance (OCP) provides optimized shift points for improved performance.
The 4L80-E transmission features a heavy-duty design with a cast iron case and steel input and output shafts. It has a 6-speed gearbox, which provides a wider gear ratio spread for better fuel economy and acceleration. The transmission uses a torque converter with a lock-up clutch for improved efficiency and power delivery.
The 4L80-E also features a robust hydraulic system with a high-capacity oil pump and an integrated oil cooler. The oil cooler helps to maintain the proper operating temperature of the transmission, ensuring its longevity and performance. The hydraulic system is controlled by the MT1 MCP, which provides precise and timely control over the transmission's shifting functions.
The OCP feature of the 4L80-E allows for optimized shift points based on vehicle load and driving conditions. This results in improved fuel efficiency, reduced wear and tear on the transmission, and smoother shifts. The OCP also allows for custom tuning for specific applications, such as towing or performance upgrades.
In summary, the Chevrolet 400-00591 Automatic Transmission is a high-performance upgrade for 2000-2009 Chevrolet 2500 vans. Its heavy-duty design, 6-speed gearbox, and advanced hydraulic system provide improved performance, fuel economy, and longevity. The MT1 MCP and OCP features ensure smooth and efficient shifting and optimized performance based on driving conditions. This transmission is an excellent choice for anyone looking to upgrade their Chevy 2500 van's transmission for improved performance and reliability.
Pros of buying Chevrolet 400-00591 4L80E Optimum Transmission (MT1 MCP 08-09 2500 van):1. Durability: The 4L80E transmission is known for its robustness and reliability, which makes it a popular choice among vehicle owners.
2. Versatility: This transmission is compatible with various vehicle models and applications, including trucks and vans, which increases its market value.
3. Performance: The 4L80E transmission offers smooth shifting and improved fuel efficiency, resulting in better overall performance.
4. Part Availability: The popularity of this transmission means that replacement parts are widely available, making repairs and maintenance more straightforward.
Cons of buying Chevrolet 400-00591 4L80E Optimum Transmission (MT1 MCP 08-09 2500 van):1. Cost: The initial cost of purchasing a new 4L80E transmission can be quite high, which may be a deterrent for some buyers.
2. Complexity: The 4L80E transmission is a complex system that requires specialized knowledge to install and maintain, which may require hiring a professional.
3. Potential for Damage: Improper installation or maintenance can lead to damage to the transmission, which can be costly to repair.
Conclusion:The Chevrolet 400-00591 4L80E Optimum Transmission (MT1 MCP 08-09 2500 van) is a reliable, high-performance transmission that offers excellent durability and versatility. While the initial cost and complexity of installation may be a concern for some buyers, the availability of replacement parts and potential for improved fuel efficiency make it a worthwhile investment for those looking for a reliable transmission for their vehicle. Ultimately, the decision to purchase this transmission will depend on individual budget, technical expertise, and vehicle requirements.
Recommendation:If you are in the market for a reliable transmission for your Chevrolet 2500 van, the Chevrolet 400-00591 4L80E Optimum Transmission (MT1 MCP 08-09 2500 van) is a great choice. However, it is recommended to do your research and consult with a professional mechanic to ensure that this transmission is the best fit for your vehicle and budget. Additionally, proper installation and maintenance are essential to ensure the longevity and performance of the transmission.
Control modules, radio/audio units, and other electronic parts may require reprogramming by the dealer. L Left Side Driver Side, R Right Passenger. AT Automatic Transmission, MT Manual MIA missing, Man as in not automatic.