Designed and built by GM, the 8L45 automatic transmission offers increased efficiency and lighter weight compared to the previous 6L45 Hydra-Matic six speed transmissions. With a wide 7.0 overall gear ratio, smaller steps between gears, and numerically higher 4.615 first gear, the 8L45 keeps the engine within the sweet spot of the rpm band for a greater feeling of immediate performance while making the most of its horsepower and torque to optimize performance and efficiency. Advanced features like Automatic Start/Stop, Grade Braking and Driver Shift Control (TAP Shift) are available based on application needs.
This contact form is intended for current and prospective U.S. and international business customers in search of GM engine and/or transmission solutions. If you are looking for parts, service, or GM vehicle support, please click here.
This contact form is intended for current and prospective U.S. and international business customers in search of GM engine and/or transmission solutions. If you are looking for parts, service, or GM vehicle support, please click here.
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