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Automatic Transmission - 4et50 - Specifications Cadillac ELR I

Automatic Trans ~132 words

Fastener Tightening Specifications (Off Vehicle)

ApplicationRef No.*QuantitySizeSpecification
MetricEnglish
A/Trans Auxiliary Fluid Pump Bolt4381M5x16 mm4 N.m35 lb in
A/Trans Auxiliary Fluid Pump Bolt4314M6x51 mm9 N.m80 lb in
A/Trans Auxiliary Fluid Pump Wiring Harness Bolt3021M6x20 mm9 N.m80 lb in
A/Trans Case Cover Bolt489M8x30 mm22 N.m16 lb ft
A/Trans Control Wiring Harness Shield Bolt - External6003M6x16 mm9 N.m80 lb in
A/Trans Fluid Pressure Test Hole Plug31611/8"-27 NPTF11 N.m97 lb in
A/Trans Fluid Pump Bolt3008M6x25 mm9 N.m80 lb in
A/Trans Fluid Pump Cover Bolt40319M6x25 mm9 N.m80 lb in
A/Trans Fluid Trough Bolt3132M6x20 mm9 N.m80 lb in
A/Trans Manual Shift Shaft Position Switch Bolt5122M6x25 mm9 N.m80 lb in
A/Trans Output Speed Sensor Bolt371M6x30 mm9 N.m80 lb in
A/Trans Wiring Harness Shield Bolt - External461M6x20 mm9 N.m80 lb in
Auxiliary Fluid Motor Retainer Bolt3041M6x20 mm9 N.m80 lb in
Auxiliary Pump Press Plug30711/8"-27 NPTF11 N.m97 lb in
Case Cover Stud492M8x30 mm22 N.m16 lb ft
Case Extension Bolt2283M8x35.7 mm22 N.m16 lb ft
Center Support Bolt909M10x25 mm58 N.m42 lb ft
Control Valve Body Bolt101M6x80 mm9.5 N.m84 lb in
Control Valve Body Bolt135M6x65 mm9.5 N.m84 lb in
Control Valve Body Bolt164M6x80 mm9.5 N.m84 lb in
Control Valve Body Bolt175M6x42 mm9.5 N.m84 lb in
Control Valve Body Bolt2112M6x48 mm9.5 N.m84 lb in
Control Valve Body Cover Bolt110M6x35 mm9 N.m80 lb in
Control Valve Channel Plate Bolt5013M6x20 mm9 N.m80 lb in
Drive Motor Generator Position Sensor Bolt6543M5x16 mm7.25 N.m64 lb in
Drive Motor/Generator Power Inverter Module Cable Connector Bolt - Internal766M6x20 mm9 N.m80 lb in
Drive Motor/Generator Power Inverter Module Cable Stud996M6x20 mm9 N.m80 lb in
Drive Motor/Generator Power Inverter Module Cable Terminal Insulator Block Bolt2082M6x20 mm9 N.m80 lb in
Drive Motor/Generator Stator Bolt728M6x20 mm10 N.m89 lb in
Fill Hole Plug3121M20x17.6 mm20 N.m15 lb ft
Fluid Cooler Outlet Pipe Assembly Bolt62M5x16 mm7.25 N.m64 lb in
Fluid Level Control Valve Stud3 and 2327M6x40 mm9 N.m80 lb in
Front Differential Carrier Baffle Bolt2233M6x20 mm9 N.m80 lb in
Front Differential Carrier Baffle Bolt3222M6x20 mm9 N.m80 lb in
Front Differential Carrier Lube Pipe Bolt2191M5x16 mm7.25 N.m64 lb in
Generator/Drive Motor Position Sensor Bolt6063M5x16 mm7.25 N.m64 lb in
Park Pawl Actuator Bolt7002M6x25 mm9 N.m80 lb in
Torque Dampener and Differential Housing Bolt3417M10x35 mm65 N.m48 lb ft
Transmission Fluid Drain Plug224 and 22521/8"-27 NPTF11 N.m97 lb in
Variable Drive Pulley Retaining Nut111M6x1 mm9 N.m80 lb in
Variable Low and 1-2 Reverse Clutch Housing Bolt6517M6x39.5 mm15 N.m11 lb ft
*Reference number refers to the component callout number in Disassembled Views (1) Use NEW fastener.

Fastener Tightening Specifications (Off Vehicle)

Fastener Tightening Specifications (On Vehicle)

ApplicationSpecification
MetricEnglish
Electrical Harness Retaining Nut25 N.m18 lb ft
Electrical Harness Retaining Screw50 N.m37 lb ft
Fluid Cooler Pipe to Transmission Bolt22 N.m16 lb ft
Fluid Filler Tube Nut18 N.m13 lb ft
Fuel Pipe Bracket Nuts - 2WD50 N.m37 lb ft
Fuel Pipe Bracket Nuts - 4WD25 N.m18 lb ft
Fuel Line Bracket Screw7 N.m62 lb in
Range Selector Lever Heat Shield Bolts17 N.m13 lb ft
Range Selector Lever Nuts25 N.m18 lb ft
Torque Dampener to Flex Plate Bolts65 N.m48 lb ft
Transmission to Engine Bolts50 N.m37 lb ft
Transmission Mount to Crossmember Nuts55 N.m40 lb ft
Transmission Mount to Transmission Bolts67 N.m50 lb ft
Transmission to Transfer Case Nuts50 N.m37 lb ft
Transmission Range Selector Lever Nut25 N.m18 lb ft
Transmission Range Selector Lever Cable Heat Shield Bolts17 N.m13 lb ft

Fastener Tightening Specifications (On Vehicle)

Transmission General Specifications

Name4ET50
RPO CodesMKA
Production LocationRamos, Mexico
Transmission DriveFront Wheel Drive Transaxle
1-EV Charge DepleteElectrically Variable Drive Motor B Only
LS-EV Charge DepleteLoad Sharing Electrically Variable Drive Motor A & B
1-ICE Charge SustainingDrive Motor A Charging Drive Motor B Propulsion
LS-ICELoad Sharing Electrically Variable Drive Motor & ICE
EV-ReverseElectrically Variable
Torque Dampener Size266.4 mm
Pressure TapLine Pressure (Main and Auxiliary Pump same plug)
Transmission Fluid TypeDEXRON VI®
Transmission Type: ElectricElectrically Variable
Transmission Type: EV58 kW(Drive Motor A (1) and 116 kW(Drive Motor B (2) Internal Motor
Transmission Type: TTransaxle Mount
Transmission Type: 50Product Series
Position QuadrantP, R, N, D
Case MaterialDie Cast Aluminum
Transmission Net Weight (Wet)185 kg (407 pounds)
Maximum Trailer Towing CapacityNA

Transmission General Specifications

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United StatesCanada
Automatic Transmission FluidDEXRON®VI8886103719264717

Adhesives, Fluids, Lubricants, and Sealers

Fluid Pump Selective Specifications

Fluid Pump Body Pocket DepthFluid Pump Gear ThicknessEndface Clearance
MetricEnglishMetricEnglishMetricEnglish
10.064-10.056 mm0.3962-0.3959 in10.029-10.019 mm0.3948-0.3944 in0.045-0.029 mm0.0017-0.0011 in
10.055-10.045 mm0.3958-0.3954 in10.018-10.008 mm0.3944-0.3940 in0.047-0.027 mm0.0018-0.0010 in
10.044-10.036 mm0.3954-0.3951 in10.007-9.997 mm0.3939-0.3935 in0.045-0.029 mm0.0017-0.0011 in

Fluid Main Pump Selective Specifications

Fluid Pump Body Pocket DepthFluid Pump Gear ThicknessEndface Clearance
MetricEnglishMetricEnglishMetricEnglish
16.027-16.017 mm0.6309-0.6305 in15.997-15.987 mm0.6298-0.6294 in0.040-0.020 mm0.0017-0.0011 in
16.016-16.006 mm0.6305-0.6301 in15.986-15.976 mm0.6293-0.6289 in0.040-0.020 mm0.0018-0.0010 in
16.005-15.995 mm0.6301-0.6297 in15.975-15.965 mm0.6289-0.6285 in0.040-0.020 mm0.0017-0.0011 in

Fluid Auxiliary Pump Selective Specifications

Taper Bearing Preload Selective Specifications

Front Differential Drive Pinion Gear and Differential Thrust Washer Selection Chart Thrust Washer O.D. Color ChartWasher Thickness
MetricEnglish
Dark Blue (Left Side)0.429 mm0.016 in
Light Green (Left Side)0.561 mm0.022 in
Plain (Left Side)0.696 mm0.027 in
White (Left Side)0.823 mm0.032 in
Light Blue (Left Side)0.957 mm0.037 in
Dark Blue (Right Side)0.609 mm0.023 in
Light Green (Right Side)0.721 mm0.028 in
Plain (Right Side)0.810 mm0.031 in
White (Right Side)0.912 mm0.035 in
Light Blue (Right Side)1.026 mm0.040 in

Taper Bearing Preload Selective Specifications

Range Reference

RangeCB1-2R Clutch (C1)C2-3-4 Clutch (C2)C1-3R Clutch (C4)DBC C5*
Park/Neutral
Engine StartAppliedApplied
Reverse Output Split Engine OffApplied
Reverse Output Split Engine OnAppliedApplied
Reverse Series Mode Engine OffApplied
Reverse Series Mode Engine OnAppliedApplied
Drive Series Mode Engine OffApplied
Drive Series Mode Engine OnAppliedApplied
Drive Output Split Engine OffApplied
Drive Output Split Engine OnAppliedApplied
Power Off Low DefaultApplied
Power Off High DefaultApplied
* Dampener Bypass Clutch

Range Reference

Shift Solenoid Valve State and Gear Ratio

GearShift SOL 1 (Y)Shift SOL 2 (X)Modulated Line Pressure PC SOL 1 N.H.C 2-3-4 CL PC SOL 2 N.H.CB 1-2R CL PC SOL 3 N.H.C1-3R CL PC SOL 4 N.L.Dampener Bypass Valve PC SOL 5 N.L.Gear Ratio
Park/NeutralOFFOFFONOFFOFFOFFOFF
Engine StartOFFONONOFFOFFONON
Reverse Output Split Engine OFFONOFFONONOFFOFFOFFEV
Reverse Output Split Engine OnONONONONOFFONOFF
Reverse Series Mode Engine OffOFFOFFONOFFONOFFOFFEV
Reverse Series Mode Engine OnOFFONONOFFONONOFFEV
Drive Series Mode Engine OffOFFOFFONOFFONOFFOFFEV
Drive Series Mode Engine OnOFFONONOFFONONOFFEV
Drive Output Split Engine OffONOFFONONOFFOFFOFFEV
Drive Output Split Engine OnONONONONOFFONOFFEV
Power Off High DefaultOFFOFFONONONOFFOFF
For shift solenoids 1 and 2, "ON" = Solenoid Energized (Pressurized) "OFF" = Solenoid De-energized (No Pressure). EV = Electrically Variable For pressure control solenoids, "ON" = Pressurized, "OFF" = No Pressure

Shift Solenoid Valve State and Gear Ratio

Solenoid Valve Pressure Specifications

Note. Pressure readings must be taken with transmission at normal operating temperatures.

Line PC Solenoid Valve PressureActual Pressure
Requested Pressure (kPa)MetricEnglish
265228-400 kPa33-58 psi
332296-469 kPa43-68 psi
399365-538 kPa53-78 psi
466434-607 kPa63-88 psi
533496-669 kPa72-97 psi
599565-738 kPa82-107 psi
666634-807 kPa92-117 psi
733696-869 kPa101-126 psi
800765-938 kPa111-136 psi

Main Pump (Engine On Hood Open)

Line PC Solenoid Valve PressureActual Pressure
Requested Pressure (kPa)MetricEnglish
265228-331 kPa33-48 psi
332296-400 kPa43-58 psi
399365-469 kPa53-68 psi
466434-538 kPa63-78 psi
533496-600 kPa72-87 psi
599565-669 kPa82-97 psi
666634-738 kPa92-107 psi
733696-800 kPa101-116 psi
800765-869 kPa111-126 psi

Auxiliary Pump (Engine Off Hood Closed)

Transmission Internal Mode Switch Logic

Internal Mode Switch (IMS) IMS Circuits/ParameterSelector Position
ParkReverseNeutralDrive
Direction Switch Operating Conditions: Ignition ON, range selector in appropriate gear
Direction IMS D1HIGHHIGHLOWLOW
Direction IMS D2LOWLOWHIGHHIGH
Direction IMS R1HIGHLOWLOWHIGH
Direction IMS R2LOWHIGHHIGHLOW
Direction IMS StartLOWHIGHLOWHIGH
Range Switch Operating Conditions: Ignition ON, range selector in appropriate gear
IMS ALOWLOWHIHI
IMS BHILOWLOWLOW
IMS CHIHIHILOW
IMS PLOWHILOWHI
Always HIGH status: Open/short to voltage condition Always LOW status: Short to ground condition Every status HIGH for either switch indicates an open ground circuit or connector for that portion of the IMS.

Transmission Internal Mode Switch Logic

Transmission Fluid Pressure Switch Logic

Transmission Fluid Pressure (TFP) Switch Logic GearTFP SW 1*TFP SW 3TFP SW 4TFP SW 5
ParkHighLowLowHigh
Engine StartHighHighLowHigh
Reverse - Output Split (Engine OFF)HighHighHighHigh
Reverse - Output Split (Engine ON)HighLowHighHigh
Reverse - Series Mode (Engine OFF)HighLowLowLow
Reverse - Series Mode (Engine ON)HighHighLowLow
NeutralHighLowLowHigh
Drive - Series Mode (Engine OFF)HighLowLowLow
Drive - Series Mode (Engine ON)HighHighLowLow
Drive - Output Split (Engine OFF)HighHighHighHigh
Drive - Output Split (Engine ON)HighLowHighHigh
Power Off - DefaultLowLowLowLow
High = 12V (Switch Open or Pressurized) Low = 0 volts (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist

Transmission Fluid Pressure Switch Logic

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