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Home/Chevrolet/Malibu/Chevrolet Malibu VII (2008-2012)/Repair manual/Automatic Trans/Automatic Transaxle - 6t30/6t40/6t45 - Specifications
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Automatic Transaxle - 6t30/6t40/6t45 - Specifications Chevrolet Malibu VII

Automatic Trans

Fastener Tightening Specifications

ApplicationRef No.*QuantitySizeSpecification
MetricEnglish
A/Trans Control Bolt8 N.m71 lb in
A/Trans Flex Plate Bolt60 N.m45 lb ft
A/Trans Fluid Pump Bolt to Converter Housing
First Pass2008M8x3310 N.m89 lb in
Final Pass2008M8x3345°
A/Trans Fluid Pump Cover Bolt30223M6x2512 N.m106 lb in
Control Solenoid Valve Assembly (w/TCM and Body) to Case Bolt412M6x9710 N.m89 lb in
Control Solenoid Valve Assembly (w/TCM and Body) to Case Bolt63M5x40.57 N.m62 lb in
Control Valve Body Assembly (Complete) Bolt4001M5x40.57 N.m62 lb in
Control Valve Body to Case Bolt92M6x5311 N.m97 lb in
Control Valve Body to Case Bolt109M6x6011 N.m97 lb in
Control Valve Body Cover Bolt113M6x3012 N.m106 lb in
Drain Plug6411/8"-27 NPTF12 N.m106 lb in
Fluid Level Hole Plug6311/8"-27 NPTF12 N.m106 lb in
Fluid Pressure Test Hole Plug5111/8"-27 NPTF12 N.m106 lb in
Front Differential Carrier Baffle Bolt - Converter Housing2042M6x2512 N.m106 lb in
Front Differential Carrier Baffle Bolt - Case612M6x1612 N.m106 lb in
Input Shaft Support Bolt573M6x5012 N.m106 lb in
Input Speed Sensor Bolt211M6x239 N.m80 lb in
Manual Shift Detent Spring171M6x1612 N.m106 lb in
Output Speed Sensor Bolt151M6x189 N.m80 lb in
Torque Converter and Differential Housing Bolt
First Pass2715M8x3010 N.m89 lb in
Final Pass2715M8x3050°
Torque Converter to Flywheel Bolt60 N.m45 lb ft
Transmission Bolt (1, 2, 3) - 6T4075 N.m56 lb ft
Transmission Bolt (4, 5) - 6T4050 N.m37 lb ft
Transmission Bolt (1, 2, 3, 4) - 6T4575 N.m56 lb ft
Transmission Bolt (5) - 6T4550 N.m37 lb ft
Transmission Bracket Mount to Mount Through Bolt100 N.m74 lb ft
Transmission Fluid Cooler Outlet Pipe Nut22 N.m17 lb ft
Transmission Fluid Cooler Pipe Inlet Nut22 N.m17 lb ft
Transmission Mount Bolt62 N.m46 lb ft
Transmission Mount Bolt - Left Side to Body62 N.m46 lb ft
Transmission Mount Bolt - Left Side to Transmission50 N.m + 60-75°37 lb ft
Transmission Mount Nut - Left Side to Body62 N.m46 lb ft
Transmission Mount Through Bolt62 N.m46 lb ft
Transmission Mount to Transmission Bolt100 N.m74 lb ft
Transmission Range Selector Cable Bracket Bolt18 N.m14 lb ft
Transmission Range Selector Lever Nut20 N.m15 lb ft
*Reference number refers to the component callout number in Disassembled Views

Transmission General Specifications (6T40/45)

Name6T40/6T45
RPO CodesMH8, MH7
Production LocationKorea/China
Transmission DriveFront Wheel Drive
Reverse Gear Ratio2.94
1st Gear Ratio4.584
2nd Gear Ratio2.964
3rd Gear Ratio1.912
4th Gear Ratio1.446
5th Gear Ratio1.000
6th Gear Ratio0.746
Effective Final Drive Gear Ratio2.89/3.17/3.87
Torque Converter Size - Diameter of Torque Converter Turbine236 mm
Pressure Taps LinePressure
Transmission Fluid TypeDEXRON VI®
Transmission Fluid Capacity8.0 L/8.5 Quarts
Transmission Type: 6Six Forward Gears
Transmission Type: TTransverse Mount
Transmission Type: 40/45Product Series
Position QuadrantP, R, N, D, * *(Refer to the applicable owner's manual)
Case MaterialDie Cast Aluminum
Transmission Net Weight81/85 kg (178/187 lbs)
Maximum Trailer Towing CapacityN/A
Maximum Gross Vehicle Weight (GVW)2100 kg (4,630 lbs)

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Torque Converter BoltsThreadlock1234538210953489

Fluid Capacity Specifications (6T40/45/50)

ApplicationSpecification
MetricEnglish
Valve Body Cover Removal - Approximate Capacity5.0-7.0 liters5.3-7.4 quarts
Fluid Change - Drain Plug - Approximate Capacity4.0-6.0 liters4.2- 6.3 quarts
Overhaul - Approximate Capacity8.0-8.5 liters8.5-9.0 quarts

Fluid Pump Selective Specifications

Fluid Pump Body Pocket DepthFluid Pump Gear Thickness
MetricEnglishMetricEnglish
12.617-12.625 mm0.4967-0.4970 in12.580-12.588 mm0.4952-0.4955 in
12.626-12.636 mm0.4970-0.4974 in12.589-12.599 mm0.4956-0.4960 in
12.637-12.645 mm0.4975-0.4978 in12.600-12.608 mm0.4960-0.4963 in

Clutch & Band Application

RangeParkReverseNeutralDrive
1st Braking1st2nd3rd4th5th6th
1-2-3-4 ClutchAppliedAppliedAppliedAppliedApplied
3-5 Reverse ClutchAppliedAppliedApplied
4-5-6 ClutchAppliedAppliedApplied
2-6 ClutchAppliedApplied
Low and Reverse ClutchApplied*AppliedApplied*Applied
Low Clutch Assembly (OWL)HoldingHolding
* = Applied with NO load

Shift Solenoid Valve State and Gear Ratio

GearShift SOL 11-2-3-4 CL PC SOL 5 N.L.2-6 CL PC SOL 4 N.L.3-5 REV CL PC SOL 2 N.H.LOW REV 4-5-6 CL PC SOL 3 N.H.Gear Ratio
ParkONOFFOFFOFFON
ReverseONOFFOFFONON2.940
NeutralONOFFOFFOFFON
1st BrakingONONOFFOFFON4.584
1stOFFONOFFOFFOFF4.584
2ndOFFONONOFFOFF2.964
3rdOFFONOFFONOFF1.912
4thOFFONOFFOFFON1.446
5thOFFOFFOFFONON1.000
6thOFFOFFONOFFON0.746
Effective Final Drive Ratio - 6T40/45 - 3.17/3.87 For shift solenoid 1, "ON" = Solenoid Energized (Pressurized) "OFF" = Solenoid De-energized (No Pressure). For pressure control solenoids, "ON" = Pressurized, "OFF" = No Pressure

Transmission Fluid Pressure Switch Logic

GearTFP Switch States
TFP SW1*TFP SW3TFP SW4TFP SW5
ParkLowLowLowLow
ReverseLowLowLowLow
NeutralLowLowLowLow
Drive 1st - Engine BrakingHighLowLowLow
Drive 1stHighHighLowHigh
Drive 2ndHighLowLowHigh
Drive 3rdLowHighLowHigh
Drive 4thHighHighLowLow
Drive 5thLowHighHighLow
Drive 6thHighLowHighLow
High = 12V (Switch Open or Pressurized) Low = 0V (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist

Transmission Internal Mode Switch Logic

Gear Selector PositionSignal ASignal BSignal CSignal P
ParkLOWHIHILOW
Park/ReverseLOWLOWHILOW
ReverseLOWLOWHIHI
Reverse/NeutralHILOWHIHI
NeutralHILOWHILOW
Neutral/Drive 6HILOWLOWLOW
Drive 6HILOWLOWHI
Drive 6/Drive 4LOWLOWLOWHI
Drive 4LOWLOWLOWLOW
Drive 4/Drive 3LOWHILOWLOW
Drive 3LOWHILOWHI
Drive 3/Drive 2HIHILOWHI
Drive 2HIHILOWLOW
OpenHIHIHIHI
InvalidHIHIHILOW
InvalidLOWHIHIHI
HI = Ignition voltage LOW = 0 volts

Solenoid Valve Pressure

Requested Pressure (kPa)Actual Pressure
MetricEnglish
None345-550 kPa50-80 psi
200690-900 kPa100-130 psi
4001100-1310 kPa160-190 psi
6001520-1725 kPa220-250 psi
8001860-2275 kPa270-330 psi
10001860-2275 kPa270-330 psi
12001860-2275 kPa270-330 psi
14001860-2275 kPa270-330 psi
16001860-2275 kPa270-330 psi
18001860-2275 kPa270-330 psi
20001860-2275 kPa270-330 psi

Line PC Solenoid Valve Pressure

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