The General Motors 9T60 9-speed automatic transmission (designated M3G and M3T) has been assembled since 2017 and is installed in the Buick Regal, LaCrosse, Holden Commodore with the 3.6-liter LGX engine. This transmission is also used in the Cadillac XT5 and Chevrolet Blazer with the 2.0-liter LSY turbo engine.
Specifications
| Type | automatic transmission |
| Number of gears | 9 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 3.6 |
| Torque output, Nm | up to 420 |
| Recommended oil | DEXRON VI |
| Oil capacity, liter | 9.5 |
| Partial replacement, liter | 5.7 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 105 |
Gear ratios GM 9T60
Using the 2018 Buick Regal with a 3.6-liter engine as an example:
| Main | 2.89 |
| 1st | 4.689 |
| 2nd | 3.306 |
| 3rd | 3.012 |
| 4th | 2.446 |
| 5th | 1.923 |
| 6th | 1.446 |
| 7th | 1.000 |
| 8th | 0.747 |
| 9th | 0.617 |
| Reverse | 2.960 |
Using
The transmission was installed on:
- Buick Regal 6 (E2XX) in 2017 – 2019;
- Buick LaCrosse 3 (P2XX) in 2017 – 2019;
- Cadillac XT5 I (C1UL) in 2019 – …;
- Chevrolet Blazer 3 (C1XX) in 2018 – …;
- Holden Commodore 5 (ZB) in 2018 – 2020.
Disadvantages of the GM 9T60 gearbox
- This automatic transmission had many problems in its early years, but most have since been fixed;
- Many were helped by a software update, but some had to replace the valve body under warranty;
- It’s also worth noting the extremely high sensitivity of the solenoids to oil cleanliness;
- The weak points of this transmission include the parking mechanism, where the valve simply jams;
- A number of owners also complained about the shift lever breaking at low mileage.
