GM Service Manual Online
For 1990-2009 cars only

Name

Hydra-Matic® 4T40-E/4T45-E

RPO Codes

MN4 - 4T40-E

MN5 - 4T45-E

Production Location

Windsor, Ontario, Canada

Vehicle Platform

Engine/Transmission

Usage

J, N, Z

Transmission Drive

Transverse Mounted Front Wheel Drive

Maximum Engine Torque

4T40-E 270 N·m (200 lb ft)

4T45-E 290 N·m (215 lb ft)

Maximum Shift Speed

1-2 6,500 RPM

2-3 6,500 RPM

3-4 6,500 RPM

1st Gear Ratio

2.960:1

2nd Gear Ratio

1.626:1

3rd Gear Ratio

1.000:1

4th Gear Ratio

0.681:1

Reverse

2.143:1

Torque Converter Size - Diameter of Torque Converter Turbine

245 mm

Pressure Taps

Line Pressure

Transmission Fluid Type

DEXRON® III

Transmission Fluid Capacity - Approximate

Bottom Pan Removal: 6.5 L (6.9 qts)

Complete Overhaul: 9.0 L (9.5 qts)

Dry: 12.2 L (12.9 qts)

Transmission Type: 4

Four Forward Gears

Transmission Type: T

Transverse Mount

Transmission Type: 40

Product Series

Transmission Type: E

Electronic Controls

Position Quadrant

P, R, N, Overdrive, 3, 2, 1

Case Material

Die Cast Aluminum

Transmission Weight Dry

4T40-E 74.7 kg (164 lbs)

4T45-E 75.1 kg (165.6 lbs)

Transmission Weight Wet

4T40-E 85.0 kg (187 lbs)

4T45-E 85.5 kg (188.5 lbs)

Maximum Trailer Towing Capacity

487 kg (1,000 lbs)

Maximum Gross Vehicle Weight (GVW)

1,826 kg (4,100 lbs)

Ratios

Chain

Final Drive

Effective - Overall

32/38

3.29

3.91

32/38

3.05

3.63

35/35

3.29

3.29

35/35

3.05

3.42