Automatic transmission GM 6T40
Content
- Specifications 6-automatic transmission GM 6T40
- Description of devices automatic machine 6T40
- Gear ratios checkpoint 6T40
- Which models are equipped with a GM 6T40 box
- Reviews on automatic transmission 6T40 its pros and cons
- Regulations for the maintenance of the machine 6T40
- Disadvantages, breakdowns and problems of the 6T40 box
- The price of an eight-speed automatic transmission GM 6T40
The 6-speed automatic transmission GM 6T40 has been assembled at the concern's factories since 2007 and is installed on front-wheel drive models under the MH8 index and all-wheel drive models like MHB. There is a version for MHH hybrid cars and a Gen 3 modification under the MNH index.
The 6T family also includes automatic transmissions: 6T30, 6T35, 6T45, 6T50, 6T70, 6T75 and 6T80.
Specifications 6-automatic transmission GM 6T40
| Type | hydraulic machine |
| Number of gears | 6 |
| For drive | front / full |
| Engine capacity | up to 2.5 liters |
| Torque | up to 240 Nm |
| What kind of oil to pour | DEXRON VI |
| Grease volume | 8.2 liters |
| Partial replacement | 5.0 liters |
| Service | every 60 km |
| Approximate resource | 250 000 km |
Dry weight of automatic transmission 6T40 according to the catalog is 82 kg
Description of devices automatic machine 6T40
In 2007, General Motors introduced a whole series of automatic transmissions for front and all-wheel drive vehicles with a transverse powertrain. The 6T40 box is considered average in the line and is aggregated with engines up to 240 Nm of torque. There is a separate version of the automatic transmission with the MHH index for the eAssist hybrid power plant.
Gear ratios checkpoint 6T40
Using the example of a 2015 Chevrolet Orlando with a 1.8 liter engine:
| Home | 1-I | 2-I | 3-I | 4-I | 5-I | 6-I | Rear |
|---|---|---|---|---|---|---|---|
| 4.28 | 4.584 | 2.964 | 1.912 | 1.446 | 1.000 | 0.746 | 2.943 |
Similar transmissions from other manufacturers:
Which models are equipped with a GM 6T40 box
| LaCrosse 2 (GMX353) | 2012 – 2016 |
| LaCrosse 3 (P2XX) | 2016 – 2019 |
| Another 1 (GMT165) | 2012 – 2022 |
| Shelf 5 (GMX350) | 2012 – 2017 |
| Summer 1 (D1SB) | 2010 – 2016 |
| Captiva 1 (C140) | 2011 – 2018 |
| Cross 1 (J300) | 2008 – 2016 |
| Epic 1 (V250) | 2008 – 2014 |
| Equinox 3 (D2XX) | 2017 - p.t. |
| Malibu 7 (GMX386) | 2007 – 2012 |
| Malibu 8 (V300) | 2011 – 2016 |
| Malibu 9 (V400) | 2015 – 2018 |
| Impala 10 (GMX352) | 2013 – 2019 |
| Orlando 1 (J309) | 2010 – 2018 |
| Sonic 1 (T300) | 2011 – 2020 |
| Trax 1 (U200) | 2013 – 2022 |
| Tuscany 1 (V250) | 2008 – 2011 |
| Astra J (P10) | 2009 – 2018 |
| Between A (L07) | 2010 – 2015 |
| Badge B (Z18) | 2017 – 2020 |
| Mocha A (J13) | 2012 – 2019 |
| Zafira C (P12) | 2011 – 2019 |
| G6 1 (GMX381) | 2008 – 2010 |
| Aura 1 (GMX354) | 2008 – 2009 |
Reviews on automatic transmission 6T40 its pros and cons
Advantages:
- The box shifts gears quickly
- It has a wide distribution
- No problems with service and spare parts
- Good selection of secondary donors
Disadvantages:
- Common spring disc problem
- The cooling system is rather weak
- The filter is changed only with the analysis of the gearbox
- And solenoids don't tolerate dirty oil.
Regulations for the maintenance of the machine 6T40
The manufacturer does not regulate oil changes, but since the solenoids here are very sensitive to the purity of the lubricant, we recommend updating it at least once every 60 km, and preferably once every 000 km. A total of 30 liters of DEXRON VI oil is in the system, but with a partial replacement, 000 to 8.2 liters are included.
Disadvantages, breakdowns and problems of the 6T40 box
The most famous problem of the machine is the weak spring disk of the 3-5-R drum, it simply bursts, then breaks its stopper and the fragments scatter throughout the system. Despite a number of upgrades to the design of the gearbox, such breakdowns still occur.
It is also worth noting the rather aggressive settings of the transmission control unit, due to which the torque converter clutch wears out very quickly. And the solenoids in this box do not tolerate dirty lubrication and often give up even up to 80 km.
The weak points of this machine also include a modest resource of sleeves, rapid contamination of the speed sensors and an insufficient standard cooling system. The differential does not shine with reliability, and in the first gearboxes, its bolts were also unscrewed.
The manufacturer claims a 6T40 checkpoint resource of 200 thousand km, and this is how much it serves.
The price of an eight-speed automatic transmission GM 6T40
| The minimum cost | 45 000 rubles |
| Average price on the secondary | 80 000 rubles |
| Maximum cost | 100 000 rubles |
| Contract checkpoint abroad | 850 euro |
| Buy such a new unit | 340 000 rubles |
| Condition: | BOO |
| For engines: | Chevrolet Z20D1, Chevrolet F18D4 |
| For models: | Chevrolet Orlando 1, Cruze 1, Malibu 9 and others |
* We do not sell checkpoints, the price is indicated for reference