GM A5S 390R Automatic
The GM A5S 390R is a 5-speed automatic transmission used in earlier E46 330 models.
Specifications
Section titled “Specifications”| Parameter | Value |
|---|---|
| Manufacturer | General Motors (Strasbourg) |
| Model | A5S 390R |
| Gears | 5 forward + reverse |
| Fluid type | Esso LT 71141 / BMW ATF-2 |
| Pan capacity | ~4.0L (drain and fill) |
| Total capacity | ~9.0L |
Features
Section titled “Features”- Adaptive shift programming (learns driving style)
- Sport mode (S) for later upshifts and earlier downshifts
- Steptronic manual mode
- Torque converter lockup in 4th and 5th gear
Reliability
Section titled “Reliability”The A5S 390R is generally reliable with proper fluid maintenance. Regular fluid changes every 60,000 miles are essential for longevity.