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Transmission General Specifications

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Name 8L45 8L90
RPO Codes M5N, M5T M5U, M5X
Production Location Toledo, OH (USA)
Silao (Mexico)
Toledo, OH (USA)
Transmission Drive Rear Wheel Drive Rear Wheel Drive
1st Gear Ratio 4.62 4.560
2nd Gear Ratio 3.04 2.971
3rd Gear Ratio 2.07 2.075
4th Gear Ratio 1.66 1.688
5th Gear Ratio 1.26 1.270
6th Gear Ratio 1.000 1.000
7th Gear Ratio 0.85 0.845
8th Gear Ratio 0.66 0.652
Reverse 3.93 3.818
Torque Converter Size - Diameter of Torque Converter Turbine 238 mm 258 mm
Pressure Taps Line Pressure Line Pressure
Transmission Fluid Type DEXRON® HP DEXRON® HP
Transmission Type: 8 Eight Forward Gears Eight Forward Gears
Transmission Type: L Longitude Mount Longitude Mount
Transmission Type: 45/90 Product Series Product Series
Position Quadrant P, R, N, D, M P, R, N, D, M
Case Material Die Cast Aluminum Die Cast Aluminum
Transmission Net Weight (Approximate) 80 kg (176 lb) 95 kg (210 lb)
Maximum Trailer Towing Capacity Refer to applicable owner's manual Refer to applicable owner's manual