In which year did General Motors use the second-generation 6AT transmission?
1 Answers
In 2006, the first batch of General Motors' self-developed 6-speed automatic transmissions was introduced, with internal codes 6T70 and 6T75. The second-generation products were launched in 2009, with codes 6T40, 6T45, and 6T30. Below is relevant information: Definition: A transmission is a gearbox that changes the transmission ratio and direction of motion. It is located between the clutch and the central drive. Its main functions are: changing the driving force and speed of the vehicle (shifting) without altering the engine's speed and torque; enabling the vehicle to move backward (reversing); and allowing the engine to idle without stalling (neutral gear). Classification: Based on the transmission type, gear transmissions can be divided into three categories: two-shaft, three-shaft, and composite types. The two-shaft type has two main shafts (excluding the reverse shaft) and only requires one pair of gears for deceleration. The three-shaft type has three main shafts (input shaft, intermediate shaft, and output shaft) and requires two pairs of gears for deceleration.