The General Motors 6T35 (MNU) 6-speed automatic transmission has been in production since 2015 and is installed in popular models such as the Opel Astra K and the similar Chevrolet Cruze J400. This automatic transmission was a modification of the third-generation 6T40 transmission in the compact 6T30 housing.
Specifications
| Type | automatic transmission |
| Number of gears | 6 |
| Type of drive | front |
| Engine volume, l | up to 1.5 |
| Torque output, Nm | up to 235 |
| Recommended oil | DEXRON VI |
| Oil capacity, liter | 7.9 |
| Partial replacement, liter | 4.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 75 |
Gear ratios GM 6T35
Using the example of a 2017 Chevrolet Cruze with a 1.4-liter turbo engine:
| Main | 3.14 |
| 1st | 4.449 |
| 2nd | 2.908 |
| 3rd | 1.893 |
| 4th | 1.446 |
| 5th | 1.000 |
| 6th | 0.742 |
| Reverse | 2.871 |
Using
The transmission was installed on:
- Chevrolet Cruze 2 (J400) in 2016 – 2020;
- Chevrolet Onix 2 (JBSC) in 2019 – …;
- Opel Astra K (B16) in 2015 – 2021.
Disadvantages of the GM 6T35 gearbox
- This transmission isn’t getting much criticism on forums, with only complaints about abrupt shifting;
- As with all modern automatic transmissions, the valve body is very sensitive to oil cleanliness;
- Change the oil regularly, or the solenoids will become clogged with wear debris from the clutches;
- It’s also important to keep the cooling system clean to prevent the transmission from overheating.
