GM Service Manual Online
For 1990-2009 cars only

Name

Allison 1000 Series

First Range Ratio

3.10:1

Second Range Ratio

1.81:1

Third Range Ratio

1.41:1

Fourth Range Ratio

1.00:1

Fifth Range Ratio

0.71:1

Sixth Range Ratio

0.61:1

Reverse Range Ratio

-4.49:1

Transmission Fluid Type

DEXRON® VI

Maximum Gross Combined Weight (GCW)

11 800 kg (26,000 lb)*

Maximum Gross Vehicle Weight (GVW)

9 000 kg (19,850 lb)*

* Or Vehicle Manufacturers Chassis Rating, whichever is less

Table 1: Transmission Weight
Table 2: Transmission Gear Ratio
Table 3: Torque Converter Clutch Pressure Control Solenoid (TCC PCS) Specifications
Table 4: Shift Solenoid 1 (SS1), SS2, SS3, and Modulated Main Pressure (MAIN MOD) Solenoid Specifications
Table 5: Wear Limits
Table 6: Modulated Main Pressure Schedule Table (Transmissions with MAIN MOD Solenoid)

Transmission Weight

Name

Allison

Transmission Weight Dry

150 kg (330 lb)

Transmission Weight Wet

161.1 kg (353.0 lb)

Transmission Gear Ratio

Name

Allison 1000 Series

1st Range Ratio

3.10:1

2nd Range Ratio

1.81:1

3rd Range Ratio

1.41:1

4th Range Ratio

1.00:1

5th Range Ratio

0.71:1

6th Range Ratio

0.61:1

Reverse Range Ratio

4.49:1

Torque Converter Clutch Pressure Control Solenoid (TCC PCS) Specifications

Sump Temperature

Resistance

Degrees C

Degrees F

Ohms

0

32

9.5

20

68

10.5

40

104

11.5

Shift Solenoid 1 (SS1), SS2, SS3, and Modulated Main Pressure (MAIN MOD) Solenoid Specifications

Sump Temperature

Resistance

Degrees C

Degrees F

Ohms

0

32

20.0

20

68

22.0

40

104

24.5

Wear Limits

Part Measured

Specification

Metric

English

Torque Converter Pump Hub Minimum OD

58.250 mm

2.2933 in

Torque Converter Pump Hub Minimum Distance Between Flats

51.816 mm

2.0400 in

Torque Converter Cover Pilot, Minimum OD

43.080 mm

1.6960 in

Stator Shaft, Maximum ID at Turbine Shaft Seal Ring Bore

45.450 mm

1.7894 in

Stator Shaft, Maximum Spline Wear

No visible wear

No visible wear

Stator Shaft Bushing, Maximum ID

33.850 mm

1.3326 in

Transmission Oil Pump Cover Assembly Thrust Washer Thickness

1.490 mm

0.0590 in

1-2-3-4, 4-5-6 Clutch Housing Bushing, Maximum ID

78.170 mm

3.0776 in

1-2-3-4, 4-5-6 Clutch Housing Rotating Seal Bore, Maximum ID

74.050 mm

2.9154 in

1-2-3-4 Clutch Fiber Plates Maximum Cone

0.255 mm

0.0100 in

1-2-3-4 Clutch Fiber Plates Minimum Thickness

2.375 mm

0.0935 in

1-2-3-4 Clutch Fiber Plates Minimum Oil Groove Depth

0.200 mm

0.0079 in

1-2-3-4 Clutch Steel Plate Maximum Cone

0.200 mm

0.0079 in

1-2-3-4 Clutch Steel Plate Minimum Thickness

2.135 mm

0.0841 in

1-2-3-4 Clutch Backing Plate Maximum Cone

0.000 mm

0.0000 in

4-5-6 Clutch Fiber Plates Maximum Cone

0.225 mm

0.0089 in

4-5-6 Clutch Fiber Plates Minimum Thickness

2.375 mm

0.0935 in

4-5-6 Clutch Fiber Plates Minimum Oil Groove Depth

0.200 mm

0.0079 in

4-5-6 Clutch Steel Plate Maximum Cone

0.240 mm

0.0094 in

4-5-6 Clutch Steel Plate Minimum Thickness

2.135 mm

0.0841 in

Turbine Shaft Bushing, Maximum ID

20.150 mm

0.7933 in

Turbine Shaft Thrust Washer

2.590 mm

0.102 in

3rd, 5th and Reverse/2-6 Clutch Fiber Plate Maximum Cone

0.225 mm

0.0089 in

3rd, 5th and Reverse/2-6 Clutch Fiber Plate Minimum Thickness

2.375 mm

0.0935 in

3rd, 5th and Reverse/2-6 Clutch Fiber Plate Minimum Oil Groove Depth

0.200 mm

0.0079 in

3rd, 5th and Reverse/2-6 Clutch Steel Plate Maximum Cone

0.400 mm

0.0157 in

3rd, 5th and Reverse/2-6 Clutch Steel Plate Minimum Thickness

2.440 mm

0.0961 in

3rd, 5th and Reverse/2-6 Clutch Spring Plate Maximum Cone

0.400 mm

0.0157 in

3rd, 5th and Reverse/2-6 Clutch Spring Plate Minimum Thickness

3.110 mm

0.1224 in

3rd, 5th and Reverse Clutch Backing Plate Maximum Cone

0.000 mm

0.0000 in

3rd, 5th and Reverse Clutch Backing Plate Minimum Thickness

15.325 mm

0.6033 in

Thrust Plate Inner Rim, Minimum Thickness

3.000 mm

0.1181 in

2-6 Clutch Backing Plate Maximum Cone

0.000 mm

0.0000 in

2-6 Clutch Backing Plate Minimum Thickness

15.400 mm

0.6063 in

Low and Reverse Clutch Fiber Plate Maximum Cone

0.225 mm

0.0089 in

Low and Reverse Clutch Fiber Plate Minimum Thickness

2.375 mm

0.0935 in

Low and Reverse Clutch Fiber Plate Minimum Oil Groove Depth

0.200 mm

0.0079 in

Low and Reverse Clutch Steel Plate Maximum Cone

0.295 mm

0.0116 in

Low and Reverse Clutch Backing Plate Maximum Cone

0.000 mm

0.0000 in

Low and Reverse Clutch Backing Plate Minimum Thickness

17.900 mm

0.704 in

Transmission Case Clutch Plate, Spline Wear (Notching)

1.150 mm

0.0450 in

Input Internal Ring Gear, Maximum Spline Wear (Notching)

0.130 mm

0.0051 in

Input Carrier Assembly Bushing, Maximum ID

50.690 mm

1.9957 in

Input Carrier Assembly Thrust Washers Thickness

1.490 mm

0.0590 in

Input Carrier Assembly Pinion Maximum End Play

1.010 mm

0.0400 in

Intermediate Internal Ring Gear, Maximum Spline Wear (Notching)

0.130 mm

0.0051 in

Intermediate Internal Ring Gear Thrust Washer Thickness

1.490 mm

0.0590 in

Intermediate Carrier Assembly Pinion Maximum End Play

1.010 mm

0.0400 in

Intermediate Carrier Bushing, Maximum ID

36.575 mm

1.4400 in

Output Carrier Internal Ring Gear, Maximum Spline Wear (Notching)

0.130 mm

0.0051 in

Output Carrier Assembly Pinion Maximum End Play

1.010 mm

0.0400 in

Main Shaft Pilot, Minimum OD (Turbine Shaft and Output Shaft)

19.987 mm

0.7869 in

Main Shaft Journal, Minimum OD (Intermediate Carrier Bushing)

36.405 mm

1.4333 in

Output Shaft Bushing (2WD and 4WD), Maximum ID

20.150 mm

0.7933 in

Output Shaft (2WD and 4WD), Minimum Bearing Surface OD

44.978 mm

1.7708 in

Park Pawl Gear Wear

0.000 mm

0.0000 in

Output Yoke, Output Seal Surface, Minimum OD

65.080 mm

2.5622 in

Modulated Main Pressure Schedule Table (Transmissions with MAIN MOD Solenoid)

Condition

Main Pressure at 600 RPM

Main Pressure at 2100 RPM

Forward/Rev Converter w/MAIN MOD Solenoid Active

590-720 kPa

(85-105 psi)

634-758 kPa

(92-110 psi)

Forward Converter w/MAIN MOD Solenoid Inactive

700-138 kPa

(101-200 psi)

1515-1795 kPa

(220-260 psi)

*Forward Lock-up w/MAIN MOD Solenoid Active

N/A

510-627 kPa

(74- 91 psi)

Forward Lock-up w/MAIN MOD Solenoid Inactive

N/A

1000-1170 kPa

(145-170 psi)

Neutral/Park w/MAIN MOD Solenoid Active

590-720  kPa

(85-05 psi)

N/A

Neutral/Park

800-1655 kPa

(130-240 psi)

1515-1795 kPa

(220-260 psi)

* Medium duty gasoline engines only.