Transmission General Specifications
| Name | 8L45 | 8L90 | 8L90 |
|---|---|---|---|
| RPO Codes | M5N, M5T | M5U, M5X | MQE |
| Production Location | Toledo, OH (USA) Silao (Mexico) |
Toledo, OH (USA) | Toledo, OH (USA) |
| Transmission Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive |
| 1st Gear Ratio | 4.62 | 4.560 | 4.560 |
| 2nd Gear Ratio | 3.04 | 2.971 | 2.971 |
| 3rd Gear Ratio | 2.07 | 2.075 | 2.075 |
| 4th Gear Ratio | 1.66 | 1.688 | 1.688 |
| 5th Gear Ratio | 1.26 | 1.270 | 1.270 |
| 6th Gear Ratio | 1.000 | 1.000 | 1.000 |
| 7th Gear Ratio | 0.85 | 0.845 | 0.845 |
| 8th Gear Ratio | 0.66 | 0.652 | 0.652 |
| Reverse | 3.93 | 3.818 | 3.818 |
| Torque Converter Size - Diameter of Torque Converter Turbine | 238 mm | 258 mm | 237 mm 262 mm |
| Pressure Taps | Line Pressure | Line Pressure | Line Pressure |
| Transmission Fluid Type | DEXRON® HP | DEXRON® HP | DEXRON® HP |
| Transmission Type: 8 | Eight Forward Gears | Eight Forward Gears | Eight Forward Gears |
| Transmission Type: L | Longitude Mount | Longitude Mount | Longitude Mount |
| Transmission Type: 45/90 | Product Series | Product Series | Product Series |
| Position Quadrant | P, R, N, D, M | P, R, N, D, M | P, R, N, D, M |
| Case Material | Die Cast Aluminum | Die Cast Aluminum | Die Cast Aluminum |
| Transmission Net Weight (Approximate) | 80 kg (176 lb) | 95 kg (210 lb) | 98 kg (216 lb) |
| Maximum Trailer Towing Capacity | Refer to applicable owner's manual | Refer to applicable owner's manual | Refer to applicable owner's manual |