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What brand is the Cadillac XT6 transmission?

2 Answers

LeAlexis

07/28/25 9:24pm

Cadillac CT6 transmission is the 8L90 transmission independently developed by General Motors, which is a 10-speed manual-automatic transmission, meaning a transmission that combines manual and automatic shifting functions with ten gears. The introduction and working principle of the manual-automatic transmission are as follows: Introduction to manual-automatic transmission: The manual-automatic transmission, also known as the manual-automatic integrated transmission, is a transmission that combines manual and automatic shifting. Based on the automatic transmission, it allows users to manually increase or decrease gears. However, to avoid damage to the transmission and the car engine, the system will automatically correct the gear if the user selects an inappropriate one. Working principle of manual-automatic transmission: The manual-automatic transmission is essentially an electronically controlled hydraulic automatic transmission. In terms of hardware, it adds three sensors under the gear lever control panel: an upshift sensor, a downshift sensor, and a manual mode sensor. The control system uses the upshift and downshift signals to control the transmission's gear shifting.

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OwenAnn

08/12/25 2:02am

I've driven quite a few Cadillac vehicles, especially helping a friend check out the XT6 SUV. The transmission uses GM's own Hydra-Matic brand, a 9-speed automatic transmission, likely from the 9T series. GM has been developing transmissions for a long time, with Hydra-Matic having roots dating back to the 1940s. Its performance in the XT6 is quite stable, pairing well with the 3.6L V6 engine for quick and smooth shifts. On the highway, the RPM is well-controlled, with fuel consumption under 10L per 100km, making long trips more economical. The design incorporates some lightweight materials and optimized cooling, reducing the risk of overheating. Compared to Japanese-brand transmissions, it might be slightly less fuel-efficient but offers better sportiness—the XT6 strikes a good balance between practicality and handling. Maintenance is straightforward, requiring an oil change every 80,000 km, as long as it's not delayed too much. Overall, it's highly reliable, with few major issues even after years of use. GM's setup here is trustworthy.

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