GM touts its six-speed-automatic transmissions in video and blog form today, highlighting the kind of power train technology that should keep the company competitive. Engineer Jeff Lux provides some insight into GM transmission advances in his blog entry, and another transmission engineer, Scott Damman, narrates a video with some interesting animations showing how these transmissions work.
The blog points out the four percent fuel efficiency that can be gained when using a six-speed transmission over a four speed. GM has nine different six-speed transmissions, and is working on a 10th, with 40 models using them. Those numbers are likely to … Read more