For 1990-2009 cars

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
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
33/37 | 3.29 | 3.69
33/37 | 3.05 | 3.42

Table 1: | Gear Ratios
Table 2: | End Play Specification Chart
Table 3: | Reverse Clutch Backing Plate Specifications
Table 4: | Line Pressure Chart

#### Gear Ratios

4T40E/4T45-E Gear ratios
Gear | Ratio
--- | ---
First | 2.96
Second | 1.62
Third | 1.00
Fourth | 0.68
Reverse | 2.14

#### End Play Specification Chart

Recorded Measurement | Washer Selection | Washer Dimension
--- | --- | ---
100.40-100.70 mm | Brown | 1.50-1.60 mm
100.70-100.99 mm | Grey | 1.80-1.90 mm
101.00-101.29 mm | Natural | 2.09-2.19 mm
101.30-101.59 mm | Black | 2.39-2.49 mm
101.60-101.88 mm | Orange | 2.68-2.78 mm
101.89-102.18 mm | Violet | 2.98-3.08 mm
102.19-102.48 mm | Yellow | 3.28-3.38 mm
102.49-102.77 mm | Red | 3.57-3.67 mm
102.78-103.07 mm | Green | 3.87-3.97 mm

#### Reverse Clutch Backing Plate Specifications

Recorded Measurement | Backing Plate Identification
--- | ---
8.970-9.433 mm | A
9.434-10.007 mm | B
10.008-10.470 mm | C

#### Line Pressure Chart

Transaxle in PARK or NEUTRAL
Pressure Control Solenoid Current | Approximate Line Pressure
--- | ---
0.00 amp | 152-160 psi
0.10 amp | 149-151 psi
0.30 amp | 141-143 psi
0.50 amp | 124-127 psi
0.60 amp | 111-115 psi
0.70 amp | 97-101 psi
0.80 amp | 81-84 psi
0.90 amp | 64-67 psi
0.95 amp | 56-58 psi
1.00 amp | 50-51 psi
1.05 amp | 50 psi
1.10 amp | 50 psi