Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 82 (AUTOMATIC TRANSMISSION - 8L90 (M5U) - SPECIFICATIONS)SPECIFICATIONSTRANSMISSION GENERAL SPECIFICATIONS
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Transmission General Specifications
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Transmission General Specifications
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
| 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 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.