Automatic transmission GM 6L80
Content
The 6-speed automatic transmission GM 6L80 or MYC was produced from 2005 to 2021 and was installed on popular SUVs and pickups such as the Chevrolet Tahoe, Silverado and GMC Yukon. This automatic transmission was also installed on a number of sports models such as the Cadillac STS-V, XLR-V and Corvette C6.
The 6L line also includes: 6L45, 6L50 and 6L90.
Specifications 6-automatic transmission GM 6L80-E
| Type | hydraulic machine |
| Number of gears | 6 |
| For drive | rear / full |
| Engine capacity | up to 6.2 liters |
| Torque | up to 595 Nm |
| What kind of oil to pour | Dexron VI |
| Grease volume | 11.9 liters |
| Partial replacement | 6.0 liters |
| Service | every 60 km |
| Approximate resource | 250 000 km |
The weight of automatic transmission 6L80 according to the catalog is 104 kg
Gear ratios automatic transmission 6L80
On the example of a 2010 Chevrolet Tahoe with a 5.3 liter engine:
| Home | 1-I | 2-I | 3-I | 4-I | 5-I | 6-I | Rear |
|---|---|---|---|---|---|---|---|
| 3.08 | 4.027 | 2.364 | 1.522 | 1.152 | 0.852 | 0.667 | 3.064 |
Similar transmissions from other manufacturers:
Which models are equipped with a 6L80 box
| Climbing 3 (GMT926) | 2006 – 2014 |
| Climb 4 (GMTK2XL) | 2014 – 2015 |
| STS I (GMX295) | 2005 – 2009 |
| XLR I (GMX215) | 2005 – 2009 |
| Avalanche 2 (GMT941) | 2008 – 2013 |
| Camaro 5 (GMX521) | 2009 – 2015 |
| Corvette C6 (GMX245) | 2005 – 2013 |
| Silverado 2 (GMT901) | 2008 – 2013 |
| Silverado 3 (GMTK2RC) | 2013 – 2019 |
| Silverado 4 (GMT1RC) | 2018 – 2021 |
| Suburban 10 (GMT931) | 2008 – 2013 |
| Suburban 11 (GMTK2YC) | 2013 – 2019 |
| Tahoe 3 (GMT921) | 2006 – 2014 |
| Tahoe 4 (GMTK2UC) | 2014 – 2019 |
| Yukon 3 (GMT922) | 2006 – 2014 |
| Yukon 4 (GMTK2UG) | 2014 – 2019 |
| Yukon XL 3 (GMT932) | 2008 – 2013 |
| Yukon XL 4 (GMTK2YG) | 2013 – 2019 |
| Saw 3 (GMT902) | 2008 – 2013 |
| Saw 4 (GMTK2RG) | 2013 – 2019 |
| Saw 5 (GMT1RG) | 2018 – 2021 |
| H2 (GMT820) | 2007 – 2009 |
| G8 1 (GMX557) | 2007 – 2009 |
Disadvantages, breakdowns and problems of automatic transmission 6L80
The weak point of this box is the torque converter and especially its hub
Also, for active owners, the friction clutch of its blocking wears out very quickly.
And then this dirt clogs the solenoids, which causes the lubricant pressure in the system to drop.
Then the clutches in the packages begin to burn, and often their drums even burst
Like the 4L60 automatic transmission, the petal-type oil pump does not tolerate driving at high speeds
Quite often there are failures of the control unit due to transmission overheating.
In the early years, there were many cases of rotation of the pump cover O-rings.