UP TO 1000 HP
The 4L80E is GM’s heavy-duty four-speed automatic transmission designed for serious towing, commercial use, and extreme performance applications. Built on a significantly stronger platform than the 4L60E family, the 4L80E is capable of handling substantial horsepower and torque when properly upgraded. Available in the Destroyer build level, it represents one of the strongest automatic transmissions GM has ever produced.
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 1991-2013 | Chevrolet | Silverado 2500HD | 6.0L V8, 8.1L V8 | |
| 1991-2013 | GMC | Sierra 2500HD | 6.0L V8, 8.1L V8 | |
| 1991-2013 | Chevrolet | Silverado 3500 | 6.0L V8, 8.1L V8 | |
| 1991-2013 | GMC | Sierra 3500 | 6.0L V8, 8.1L V8 | |
| 2001-2013 | Chevrolet | Express Van | 6.0L V8 |
| Problem Name | Problem Description |
|---|---|
| Excessive heat and load can reduce clutch holding capacity over time. | Torque Converter Failure |
| Converter wear can lead to slipping, overheating, and contamination. | Pump Wear |
| Pump wear reduces hydraulic pressure and transmission performance. | Sprag Failure |
| One-way clutch failures can occur under repeated high-load conditions. | Valve Body Wear |
| Internal wear can negatively affect shift quality and transmission operation. |
| Gear | Ratio |
|---|---|
| 1st | 2.48:1 |
| 2nd | 1.48:1 |
| 3rd | 1.00:1 |
| 4th | 0.75:1 |
| Reverse | 2.07:1 |
