The General Motors 6L50 (MYB) 6-speed automatic transmission has been produced in the US since 2006 and is installed in the popular Chevrolet Trailblazer SUVs and Colorado and Canyon pickup trucks. The Punch Powerglide 6L50 automatic transmission is based on this transmission.
Specifications
| Type | automatic transmission |
| Number of gears | 6 |
| Type of drive | rear / all wheel |
| Engine volume, l | up to 4.6 |
| Torque output, Nm | up to 450 |
| Recommended oil | Dexron VI |
| Oil capacity, liter | 9.7 |
| Partial replacement, liter | 6.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 89 |
Gear ratios GM 6L50
Using the 2014 Chevrolet Trailblazer with a 3.6-liter engine as an example:
| Main | 3.42 |
| 1st | 4.065 |
| 2nd | 2.371 |
| 3rd | 1.551 |
| 4th | 1.157 |
| 5th | 0.853 |
| 6th | 0.674 |
| Reverse | 3.200 |
Using
The transmission was installed on:
- Cadillac CTS II (GMX322) in 2007 – 2015;
- Cadillac SRX I (GMT265) in 2006 – 2010;
- Cadillac STS I (GMX295) in 2007 – 2011;
- Cadillac XLR I (GMX215) in 2006 – 2009;
- Chevrolet Camaro 5 (GMX521) in 2009 – 2015;
- Chevrolet Colorado 2 (GMT31XX) in 2011 – …;
- Chevrolet Trailblazer 2 (GMT31XX) in 2011 – …;
- GMC Canyon 2 (GMT31XX) in 2014 – 2022.
Disadvantages of the GM 6L50 gearbox
- The weak point of all transmissions in this series is the torque converter and its hub;
- In active owners, the torque converter clutch wears out quickly and clogs the mechatronics;
- Then, due to a drop in pressure, the clutches burn out and even their drums burst;
- Driving at high speeds significantly reduces the service life of the petal-type oil pump;
- The control unit is sensitive to high temperatures and often fails when the transmission overheats.
