The General Motors 9T50 9-speed automatic transmission (codenamed M3D, M3E, M3H, M3F) has been produced since 2017 and is installed in popular models such as the Buick Envision, Chevrolet Malibu, Cadillac XT4. This transmission is paired with 2.0-liter LTG and LSY turbocharged engines and 1.6-liter LH7 diesel engine.
Specifications
| Type | automatic transmission |
| Number of gears | 9 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 2.0 |
| Torque output, Nm | up to 380 |
| Recommended oil | DEXRON VI |
| Oil capacity, liter | 9.0 |
| Partial replacement, liter | 5.7 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 95.9 |
Gear ratios GM 9T50
Using the 2020 Cadillac XT4 with a 2.0-liter turbo engine as an example:
| Main | 3.47 |
| 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 Envision 1 (D2XX) in 2017 – 2021;
- Buick Envision 2 (E2XX) in 2021 – …;
- Buick LaCrosse 3 (P2XX) in 2017 – …;
- Cadillac XT4 I (E2UL) in 2018 – …;
- Chevrolet Blazer 3 (C1XX) in 2018 – …;
- Chevrolet Cruze 2 (J400) in 2017 – 2019;
- Chevrolet Equinox 3 (D2XX) in 2017 – …;
- Chevrolet Malibu 9 (V400) in 2017 – …;
- GMC Terrain 2 (D2XX) in 2017 – …;
- Opel Insignia B (Z18) in 2020 – 2022.
Disadvantages of the GM 9T50 gearbox
- The transmission presented many problems in the early years, but most have already been fixed;
- First of all, the software was crude, and the manufacturer released a number of firmware updates;
- Due to a design defect, the first automatic transmissions shifted poorly when cold;
- Also worth noting is the extremely high sensitivity of the solenoids to oil cleanliness;
- Advantages include very easy access to the valve body for cleaning or repair.
