The General Motors 6T50 6-speed automatic transmission was produced from 2010 to 2019 and installed in front-wheel drive models under the MHK designation and all-wheel drive models under the MHJ designation. In some markets, this automatic transmission is best known as the Opel Antara and Chevrolet Captiva transmission.
Specifications
| Type | automatic transmission |
| Number of gears | 6 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 3.0 |
| Torque output, Nm | up to 350 |
| Recommended oil | DEXRON VI |
| Oil capacity, liter | 8.2 |
| Partial replacement, liter | 5.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 86.3 |
Gear ratios GM 6T50
Using the 2012 Opel Antara with a 2.2 CDTi diesel engine as an example:
| Main | 2.89 |
| 1st | 4.584 |
| 2nd | 2.964 |
| 3rd | 1.912 |
| 4th | 1.446 |
| 5th | 1.000 |
| 6th | 0.746 |
| Reverse | 2.943 |
Using
The transmission was installed on:
- Buick Envision 1 (D2XX) in 2014 – 2017;
- Buick GL8 2 (SGM258) in 2010 – 2017;
- Buick Regal 5 (GMX350) in 2011 – 2017;
- Buick Verano 1 (D1SB) in 2012 – 2016;
- Chevrolet Captiva 1 (C140) in 2011 – 2018;
- Chevrolet Malibu 8 (V300) in 2013 – 2016;
- Opel Antara A (L07) in 2010 – 2015.
Disadvantages of the GM 6T50 gearbox
- The most well-known weak point of the automatic transmission is the spring disc of the 3-5-R drum;
- If it fails, not only the drum is damaged, but fragments of the disc fly throughout the transmission;
- Replacing it with a reinforced original does not help, and there are non-original solutions;
- Cases of differential bolts coming loose have also been described on specialized forums;
- All remaining problems are related to overheating or solenoids failing.
Frequently asked questions about the GM 6T50
What type of transmission is the GM 6T50?
The GM 6T50 is a 6-speed automatic transmission for front-wheel and all-wheel drive cars.
How much torque can the GM 6T50 handle?
The GM 6T50 is designed for torque up to 350 Nm and engines up to 3.0 liters.
How much oil does the GM 6T50 take and which one?
The GM 6T50 takes 8.2 liters of oil (5.0 liters for a partial change). Recommended oil: DEXRON VI.
How often should the GM 6T50 be serviced?
Recommended service interval: every 60 000 km.
How long does the GM 6T50 last?
With proper maintenance, the GM 6T50 typically lasts about 250 000 km.
How much does the GM 6T50 weigh?
The GM 6T50 weighs about 86.3 kg.
What are the gear ratios of the GM 6T50?
Using the 2012 Opel Antara with a 2.2 CDTi diesel engine as an example: final drive 2.89, 1st 4.584, 2nd 2.964, 3rd 1.912, 4th 1.446, 5th 1.000, 6th 0.746, reverse 2.943.
What cars was the GM 6T50 installed on?
Buick Envision 1 (D2XX) in 2014 - 2017; Buick GL8 2 (SGM258) in 2010 - 2017; Buick Regal 5 (GMX350) in 2011 - 2017; Buick Verano 1 (D1SB) in 2012 - 2016; Chevrolet Captiva 1 (C140) in 2011 - 2018; Chevrolet Malibu 8 (V300) in 2013 - 2016 and 1 more (see the full list above).
What are the common problems of the GM 6T50?
The most well-known weak point of the automatic transmission is the spring disc of the 3-5-R drum. If it fails, not only the drum is damaged, but fragments of the disc fly throughout the transmission. All known problems.
