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Automatic Transmission - 6t70/6t75 - Specifications Cadillac SRX II

Automatic Trans ~174 words

Fastener Tightening Specifications

ApplicationRef No.*QuantitySizeSpecification
MetricEnglish
A/Trans Case Cover Bolt1810M6x1.0x3012 N.m106 lb in
A/Trans Fluid Pump Bolt13M6x1.0x2512 N.m106 lb in
A/Trans Fluid Trough Bolt111M6x1.0x2512 N.m106 lb in
Control Valve Body Assembly (Complete) Bolt19, 213M6x1.0x5512 N.m106 lb in
Control Valve Body Assembly (Complete) Bolt203M6x1.0x3512 N.m106 lb in
Control Valve Body Assembly (Complete) Bolt225M6x1.0x6512 N.m106 lb in
Control Valve Body to Case232M6x1.0x5512 N.m106 lb in
Control Valve Body to Case Bolt248M6x1.0x6512 N.m106 lb in
Control Valve Assembly (with TCM and Body) to Case Bolt251M6x1.0x4212 N.m106 lb in
Control Valve Assembly (with TCM and Body) to Case Bolt261M6x1.0x5512 N.m106 lb in
Control Valve Assembly (with TCM and Body) to Case Bolt272M6x1.0x6512 N.m106 lb in
Control Valve Assembly (with TCM and Body) to Case Bolt284M6x1.0x8012 N.m106 lb in
Control Valve Assembly (with TCM and Body) to Case Bolt293M6x1.0x9512 N.m106 lb in
Control Valve Body Cover Bolt3012M6x1.0x3012 N.m106 lb in
Control Valve Body Cover Stud312M6x1.0x3012 N.m106 lb in
Fluid Cooler Fitting at Radiator38 N.m28 lb ft
Fluid Cooler Pipe Nut22 N.m16 lb ft
Fluid Level Hole Plug1311/8"-27 NPTF12 N.m106 lb in
Fluid Pressure Test Hole Plug1211/8"-27 NPTF12 N.m106 lb in
Flywheel Cover Bolt10 N.m89 lb in
Front Differential Carrier Baffle Bolt61M6x1.0x2512 N.m106 lb in
Front Differential Transfer Drive Gear Support Bolt
First Pass59M8x1.25x2510 N.m89 lb in
Final Pass59M8x1.25x2550 degrees
Input Shaft Support Bolt (Torx)N/A3M6x1.0x5012 N.m106 lb in
Input Speed Sensor Bolt171M6x1.0x259 N.m80 lb in
Manual Shift Position Switch Screw3.5 N.m31 lb in
Output Speed Sensor Bolt141M6x1.0x2512 N.m106 lb in
Park Pawl Actuator Bracket Bolt102M6x1.0x2512 N.m106 lb in
Shift Control Knob Retaining Screw4 N.m35 lb in
Support Fluid Passage Tube (Torx) Bolt22M5x0.8x127 N.m62 lb in
Support Fluid Passage Tube Bolt32M6x1.0x1512 N.m106 lb in
Torque Converter and Differential Housing Bolt814M8x1.25x3536 N.m27 lb ft
Torque Converter and Differential Housing Bolt93M8x1.25x3530 N.m22 lb ft
Torque Converter to Flywheel Bolt62 N.m46 lb ft
Transaxle Brace Bolts50 N.m37 lb ft
Transaxle Left Side Mount Upper Nuts and Bolts50 N.m37 lb ft
Transaxle Mount Bolts90 N.m66 lb ft
Transaxle Mount Bracket to Frame Nut50 N.m37 lb ft
Transaxle Mount Through Bolt90 N.m66 lb ft
Transaxle Range Switch Bolt20 N.m15 lb ft
Transaxle Range Selector Lever Nut25 N.m18 lb ft
Transaxle Shift Control Nut25 N.m18 lb ft
Transaxle to Engine Bolt75 N.m55 lb ft
Transmission Cooler Pipe (External Torx) Stud152M8x1.25x30.512 N.m106 lb in
*Reference number refers to the component callout number in Disassembled Views

Transmission General Specifications

Name6T70/6T75
RPO Codes6T70-MH2 (2WD), MH4 (4WD) 6T75-MY9 (2WD), MH6 (4WD)
Production LocationWarren Michigan (USA), Ramos, Mexico
Transaxle DriveFront Wheel Drive, All Wheel Drive
Reverse Gear Ratio2.88
1st Gear Ratio4.484
2nd Gear Ratio2.872
3rd Gear Ratio1.842
4th Gear Ratio1.414
5th Gear Ratio1.000
6th Gear Ratio0.742
Effective Final Drive Gear Ratio2.77/3.16
Torque Converter Size - Diameter of Torque Converter Turbine246 mm
Pressure TapsLine Pressure
Transaxle Fluid TypeDEXRON VI®
Transaxle Fluid Capacity9.0 L/9.5 qts Quarts
Transaxle Type: 6Six Forward Gears
Transaxle Type: TTransverse Mount
Transaxle Type: 70/75Product Series
Position QuadrantP, R, N, D, * *(Refer to the applicable owner's manual)
Case MaterialDie Cast Aluminum
Transaxle Net Weight104 kg
Maximum Trailer Towing CapacityN/A
Maximum Gross Vehicle Weight (GVW)4,000 lbs

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Input Speed SensorThreadlock1234538210953489

Fluid Capacity Specifications

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 Capacity7.0-9.0 liters7.4-9.5 quarts

Taper Bearing Preload Selective Specifications

Thrust Washer O.D. Color CodeWasher Thickness
MetricEnglish
Brown0.494 mm0.020 in
Purple0.545 mm0.022 in
Black0.596 mm0.024 in
Pink0.647 mm0.026 in
Dark Blue0.698 mm0.028 in
Light Green0.749 mm0.030 in
Plain0.800 mm0.032 in
White0.851 mm0.034 in
Light Blue0.902 mm0.036 in
Orange0.953 mm0.038 in
White/Black1.004 mm0.040 in
White/Orange1.055 mm0.042 in
White/Light Green1.106 mm0.044 in

Front Differential Drive Pinion Gear and Differential Thrust Washer Selection Chart

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 (OWC)HoldingHolding
* = Applied with NO load

Shift Solenoid Valve State and Gear Ratio

GearShift SOL 1Shift SOL 21-2-3-4 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
ParkONONOFFOFFOFFON
ReverseONOFFOFFOFFONON2.88
NeutralONONOFFOFFOFFON
1st BrakingONONONOFFOFFON4.484
1stOFFONONOFFOFFOFF4.484
2ndOFFONONONOFFOFF2.872
3rdOFFONONOFFONOFF1.842
4thOFFONONOFFOFFON1.414
5thOFFONOFFOFFONON1.000
6thOFFONOFFONOFFON0.742
Effective Final Drive Ratio - 6T70/75 - 2.77/3.16 For shift solenoids 1 and 2, "ON" = Solenoid Energized (Pressurized) "OFF" = Solenoid De-energized (No Pressure). For pressure control solenoids, "ON" = Pressurized, "OFF" = No Pressure

Shift Speed

Shift @ TPKm/hOSS (RPM)
1-2 @ 12.518400
2-3 @ 12.534755
3-4 @ 12.5461021
4-5 @ 12.5601332
5-6 @ 12.5741643
6-5 @ 12.5691532
5-4 @ 12.5691532
4-3 @ 12.543955
3-2 @ 12.516355
2-1 @ 12.516355
1-2 @ 2536799
2-3 @ 25591310
3-4 @ 25781732
4-5 @ 25942087
5-6 @ 251503331
6-5 @ 25691532
5-4 @ 25521155
4-3 @ 2543955
3-2 @ 2516355
2-1 @ 2516355

Note. Shift speed points are affected by many different vehicle and transmission operating conditions. The table above represents shift speed points calibrated at specific throttle angles during normal operating conditions and a temperature range between 0-130°C (32-266°F). These shift speed points are also based on an effective final drive ratio of 2.77, and assume a production-intent tire size. The table below illustrates a number of different variables that influence these shift speed points. Based on a given operating condition, these variables may override the normal shift speed points. To assist in monitoring the different variables, the respective scan tool data parameter is also listed.

Scan Tool ParameterShift Speed Variables
Calc. Throttle PositionCalc. Throttle Position (TP) is one of the most important inputs in the transmission shift pattern logic. A very low TP angle will impact the shift pattern by causing upshifts. A very high TP angle will impact the shift pattern by causing downshifts.
Commanded GearBased on numerous inputs, the transmission control module (TCM) selects the optimum gear. Once the TCM commands a gear, the pressure control solenoids are activated to hydraulically control engagement of the proper clutch.
CruiseWhen cruise control is activated, the shift pattern is altered to reduce excessive shifting.
ECTShift speed points may be offset to enhance engine coolant temperature (ECT) warm-up. Also, operating the vehicle at higher engine speeds will reduce the time to warm the ECT and the TFT.
Engine SpeedTo protect against an over speed condition, engine speed is monitored. If the engine speed becomes too high, an upshift will occur.
Engine TorqueEngine torque is used to predict vehicle operating conditions, in order to determine the optimum gear and provide for a smoother ride.
IMSThe internal mode switch (IMS) indicates the position of the transmission manual valve. The operator controls this valve by moving the gear range selector. Therefore, the possible gears may be limited by this valve position.
TCC PC Sol. Duty CycleThe torque converter clutch (TCC) pressure control (PC) solenoid duty cycle indicates when the TCC has been engaged.
TCC Slip SpeedThe TCC Slip Speed indicates the difference between engine speed and transmission input speed. The TCC is locked when slip speed is at or near zero, and may be controlling slip when at lower slip speeds.
TFP Switch 1, 3, 4 or 5The transmission fluid pressure (TFP) switch is used to indicate if fluid pressure to a specific clutch has been applied or released.
Trans. Fluid Temp.A lower TFT will extend shift speeds, a higher TFT, or hot mode condition, will invoke shorter shift speeds in order to establish a shift pattern required to cool the TFT.
Transmission Hot ModeIf the TFT becomes too hot, a hot mode shift pattern is used. The hot mode shift pattern will invoke lower shift speed points to establish a shift pattern necessary to cool the TFT.
Transmission OSSThe transmission output speed sensor (OSS) is one of the most important inputs into the transmission shift pattern logic. A very low transmission output speed will impact the shift pattern by causing downshifts. A very high transmission output speed will impact the shift pattern by causing upshifts.

Shift Speed Variables

Transmission Fluid Pressure Switch Logic

GearTFP Switch States
TFP SW1*TFP SW3TFP SW4TFP SW5
ParkHighLowLowLow
ReverseLowLowLowLow
NeutralHighLowLowLow
Drive 1st - Engine BrakingHighHighLowLow
Drive 1stHighHighLowHigh
Drive 2ndHighLowLowHigh
Drive 3rdLowHighLowHigh
Drive 4thHighHighLowLow
Drive 5thLowHighHighLow
Drive 6thHighLowHighLow
High = 12 V (Switch Open or Pressurized) Low = 0 V (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
0345-900 kPa50-130 psi
200690-900 kPa100-130 psi
4001100-1310 kPa160-190 psi
6001520-1725 kPa220-250 psi
8001860-2070 kPa270-300 psi
10001860-2070 kPa270-300 psi

Line PC Solenoid Valve Pressure

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