UP TO 500 HP
The 4L70E is an enhanced evolution of the 4L60E platform featuring improved electronics and upgraded internal components. Found in later-model GM trucks, SUVs, and performance vehicles, the 4L70E provides an excellent foundation for performance upgrades while maintaining exceptional street manners and reliability.
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2006-2009 | Chevrolet | Trailblazer SS | 6.0L LS2 V8 | |
| 2007-2013 | Chevrolet | Silverado | 5.3L V8 | |
| 2007-2013 | GMC | Sierra | 5.3L V8 | |
| 2007-2009 | GMC | Envoy Denali | 5.3L V8 | |
| 2006-2009 | Saab | 9-7X Aero | 6.0L LS2 V8 |
| Problem Name | Problem Description |
|---|---|
| Factory sun shells are prone to cracking and stripping under increased torque loads. | 3-4 Clutch Failure |
| Insufficient clutch capacity and heat buildup commonly cause premature clutch failure. | Servo Wear |
| Factory servos lose holding capacity resulting in soft shifts and band wear. | Valve Body Wear |
| Internal wear can reduce shift quality and converter performance. | Pump Wear |
| Pump wear reduces hydraulic pressure and contributes to clutch slippage. |
| Gear | Ratio |
|---|---|
| 1st | 3.06:1 |
| 2nd | 1.63:1 |
| 3rd | 1.00:1 |
| 4th | 0.70:1 |
| Reverse | 2.29:1 |
