UP TO 650 HP
The 6L80E is GM’s six-speed electronically controlled automatic transmission designed to deliver improved efficiency, drivability, and performance. Commonly found in trucks, SUVs, and performance vehicles, the 6L80E benefits from upgraded internal components and hydraulic improvements that address common factory weaknesses while supporting substantially increased horsepower.
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2007-2018 | Chevrolet | Silverado 1500 | 5.3L V8, 6.2L V8 | |
| 2007-2018 | GMC | Sierra 1500 | 5.3L V8, 6.2L V8 | |
| 2010-2015 | Chevrolet | Camaro SS | 6.2L LS3/L99 | |
| 2008-2014 | Chevrolet | Tahoe | 5.3L V8, 6.2L V8 | |
| 2008-2014 | GMC | Yukon | 5.3L V8, 6.2L V8 |
| Problem Name | Problem Description |
|---|---|
| Converter clutch wear is one of the most common causes of 6L80E failure. | 3-5-R Clutch Failure |
| Excessive heat and wear can damage the 3-5-R clutch assembly. | Valve Body Wear |
| Hydraulic wear can affect shift quality and clutch operation. | TCM Failure |
| Internal control modules can fail and cause transmission malfunctions. | Pump Failure |
| Pump wear can reduce pressure and cause transmission damage. |
| Gear | Ratio |
|---|---|
| 1st | 4.03:1 |
| 2nd | 2.36:1 |
| 3rd | 1.53:1 |
| 4th | 1.15:1 |
| 5th | 0.85:1 |
| 6th | 0.67:1 |
| Reverse | 3.06:1 |
