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Automatic Transmission - 4L60-E/4L65-E - Introduction, Service & Replacement: Overview Chevrolet SSR I

Automatic Trans 20 illustrations ~436 words

Automatic Transmission Schematic Icons

Automatic Transmission Schematic Icons Icon Icon Definition NOTE: The OBD II symbol is used on the circuit diagrams in order to alert the technician that the circuit is essential for proper OBD II emission control circuit operation. Any circuit which fails and causes the malfunction indicator lamp (MIL) to turn ON, or causes emissions-related component damage, is identified as an OBD II circuit. IMPORTANT: Twisted-pair wires provide an effective "shield" that helps protect sensitive electronic components from electrical interference. If the wires were covered with shielding, install new shielding. In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown : The wires must be twisted a minimum of 10 turns per 31 cm (12 in) as measured anywhere along the length of the wires The outside diameter of the twisted wires must not exceed 6.0 mm

Scheme 72

Scheme 72: Automatic Transmission Schematic Icons
Scheme 72: Automatic Transmission Schematic Icons

Scheme 73

Scheme 73
Scheme 73

Scheme 74

Scheme 74: Automatic Transmission Controls Schematics
Scheme 74: Automatic Transmission Controls Schematics

Scheme 75

Scheme 75
Scheme 75

Scheme 76

Scheme 76: Automatic Transmission Electronic Component Views
Scheme 76: Automatic Transmission Electronic Component Views
CalloutComponent Name
36Vehicle Speed Sensor (VSS)
66Torque Converter Clutch (TCC) Solenoid Valve
69Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
367a1-2 Shift Solenoid (SS) Valve
367b2-3 Shift Solenoid (SS) Valve
377Pressure Control (PC) Solenoid Valve
3943-2 Shift Solenoid (SS) Valve Assembly
396Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve

Scheme 77

Scheme 77
Scheme 77
CalloutComponent Name
1Automatic Transmission 4L60-E/4L65-E
2Park/Neutral Position (PNP) Switch

Scheme 78

Scheme 78
Scheme 78
CalloutComponent Name
1Automatic Transmission
2C175

Scheme 79

Scheme 79: Disassembled Views
Scheme 79: Disassembled Views
CalloutComponent Name
1Torque Converter Assembly - Model Dependent On Size
2Pump to Case Bolt
3Pump to Case Bolt O-Ring
4Oil Pump Assembly
5A/T Fluid Pump Seal - Pump to Case - Model Dependent
5A/T Fluid Pump Seal - Pump to Case - Model Dependent
6Pump Cover to Case Gasket
7Case Bushing
9Transmission Vent Assembly
10Oil Cooler Pipe Connector - Model Dependent
11Case Servo Plug
12Servo Return Spring
132nd Apply Piston Pin
14Retainer Ring - 2nd Apply Piston
15Servo Cushion Spring Retainer
16Servo Cushion Spring - Outer
172nd Apply Piston
18Oil Seal Ring - 2nd Apply Piston - Outer
19Oil Seal Ring - 2nd Apply Piston - Inner
20Servo Piston Housing - Inner
21O-Ring Seal
22Servo Apply Pin Spring
23Servo Apply Pin Washer
24Retainer Ring - Apply Pin
254th Apply Piston
26Oil Seal Ring - 4th Apply Piston - Outer
27O-Ring Seal - 2-4 Servo Cover
282-4 Servo Cover
29Servo Cover Retaining Ring
30Case Extension to Case Seal
31Case Extension - Model Dependent
32Case Extension to Case Bolt
33Case Extension Bushing
34Case Extension Oil Seal Assembly - Model Dependent
34Case Extension Oil Seal Assembly - Model Dependent
35Speed Sensor Retaining Bolt
36Internal Transmission Speed Sensor
37O-Ring Seal - ITSS to Case Extension
71Filter Seal
72Transmission Oil Filter Assembly - Model Dependent
73Transmission Oil Pan Gasket
74Chip Collector Magnet
75Transmission Oil Pan - Model Dependent
76Transmission Oil Pan Screw
94Converter Housing to Case Bolt
95Oil Cooler Quick Connector - Model Dependent
96Oil Cooler Quick Connect Clip - Model Dependent
97Converter Housing Access Hole Plug - Model Dependent
98Converter Bolt Inspection Plate - Model Dependent
99Cup D4 Orifice Plug
102Converter Housing - Model Dependent
103Main Section Case - Model Dependent
105Servo Cushion Spring - Inner - Model Dependent
107A/T Oil Pan Hex Head Plug Assembly - Model Dependent

Scheme 80

Scheme 80
Scheme 80
CalloutComponent Name
38Transmission Case Plug - Accumulator Bleed
39Pressure Plug
40Third Accumulator (#7) Retainer and Ball Assembly
41Band Anchor Pin
42Retainer and Ball Assembly - Double Orifice (#10)
43Accumulator Piston Pin
443-4 Accumulator Piston
45Oil Seal Ring - 3-4 Accumulator Piston
463-4 Accumulator Spring - Model Dependent
47Spacer Plate to Case Gasket
48Valve Body Spacer Plate
48Valve Body Spacer Plate
49Shift Solenoids Screen
50Pressure Control Solenoid Screen
52Spacer Plate to Valve Body Gasket
53Spacer Plate Support Plate
541-2 Accumulator Spring - Outer
55Oil Seal Ring - 1-2 Accumulator
561-2 Accumulator Piston
571-2 Accumulator Cover and Pin Assembly - Model Dependent
58Accumulator Cover Bolt
59Accumulator Cover Bolt
60Control Body Valve Assembly - Model Dependent
61Checkball (#2, 3, 4, 5, 6, 8, 12)
62Valve Body Bolt
63Manual Detent Spring Assembly
64Manual Detent Spring Bolt
65Wiring Harness Pass-Through Connector O-Ring Seal
66Wiring Harness Solenoid Assembly - Model Dependent
67O-Ring Seal - Solenoid
68Hex Washer Head Bolt - Solenoid
69Transmission Fluid Pressure Manual Valve Position Switch Assembly
70Pressure Switch Assembly Bolt
77Spacer Plate Support Bolt
77Spacer Plate Support Bolt
91Number 1 Checkball
93Dipstick Stop Bracket - Model Dependent
103Main Section Case - Model Dependent
1041-2 Accumulator Spring - Inner
113Spacer Plate Support Plate - Colorado/Canyon
114Accumulator Gasket - Colorado/Canyon
115Accumulator Bolt - Colorado/Canyon
116Accumulator Cover - Colorado/Canyon
117Accumulator Bolt - Colorado/Canyon
118Accumulator Bolt - Colorado/Canyon

Scheme 81

Scheme 81
Scheme 81
CalloutComponent Name
43Accumulator Piston Pin
443-4 Accumulator Piston
45Oil Seal Ring - 3-4 Accumulator Piston
463-4 Accumulator Spring - Model Dependent
48Valve Body Spacer Plate with Bonded Gasket
541-2 Accumulator Spring - Outer
55Oil Seal Ring - 1-2 Accumulator
561-2 Accumulator Piston
571-2 Accumulator Cover and Pin Assembly
58Accumulator Cover Bolt
59Accumulator Cover Bolt
60Control Body Valve Assembly - Model Dependent
65Wiring Harness Pass-through Connector O-Ring Seal
66Wiring Harness Solenoid Assembly - Model Dependent
67O-Ring Seal - Solenoid
68Hex Washer Head Bolt - Solenoid
69Transmission Fluid Pressure Manual Valve Position Switch Assembly
70Pressure Switch Assembly Bolt
75Transmission Oil Pan
102Converter Housing
108Secondary Fluid Pump Assembly
109Secondary Fluid Pump Bolts
110Secondary Fluid Pump Bolt
111Filter Retainer
112Secondary Fluid Pump Filter

Scheme 82

Scheme 82
Scheme 82
CalloutComponent Name
200Pump Body
201Oil Seal Ring - Slide to Wear Plate
202O-Ring Seal - Slide Seal Back-Up
203Pump Slide
204Pivot Pin Spring
205Pivot Slide Pin
206Pump Slide Spring - Outer
207Pump Slide Spring - Inner
208Pump Slide Seal Support
209Pump Slide Seal
210Pump Vane Ring
210Pump Vane Ring
211Rotor Guide
212Oil Pump Rotor
213Pump Vane
214Stator Shaft
215Pump Cover
216Pressure Regulator Valve
217Pressure Regulator Valve Spring
218Pressure Regulator Isolator Spring
219Reverse Boost Valve
220Reverse Boost Valve Sleeve
221Oil Pump Reverse Boost Valve Retaining Ring
222Oil Pump Converter Clutch Valve Retaining Ring
223Stop Valve
224Converter Clutch Valve
225Converter Clutch Valve Spring - Inner
226Converter Clutch Valve Spring - Outer
227Pressure Relief Bolt Rivet
228Pressure Relief Ball
229Pressure Relief Spring
230Oil Seal Ring - Stator Shaft
231Oil Pump Cover Screen Seal
232Oil Pump Cover Screen
233Bolt M8 X 1.25 X 40 - Cover to Body
234Stator Shaft Bushing - Front
235Oil Pump Cover Plug - FWD Clutch Feed
236Oil Pump Cover Plug
236Oil Pump Cover Plug
236Oil Pump Cover Plug
236Oil Pump Cover Plug
236Oil Pump Cover Plug
236Oil Pump Cover Plug
237Check Valve Retainer and Ball Assembly
237Check Valve Retainer and Ball Assembly
238Converter Clutch Signal Orifice - Cup Plug
240Cup Orifice Plug
241Stator Shaft Bushing - Rear
242Pump Body Bushing
243Oil Seal Assembly
244Front Helix Retainer
245A/T Fluid Pump Slide Outer Spring

Scheme 83

Scheme 83
Scheme 83
CalloutComponent Name
350Control Valve Body Assembly
353Forward Accumulator Oil Seal
354Forward Accumulator Piston
355Forward Accumulator Pin
356Forward Accumulator Spring
357Forward Abuse Valve
358Forward Abuse Valve Spring
359Bore Plug
360Coiled Spring Pin
360Coiled Spring Pin
361Low Overrun Valve
362Low Overrun Valve Spring
363Forward Accumulator Cover
364Forward Accumulator Cover Bolt
364aPressure Control Solenoid Retainer Bolt
3651-2 Shift Valve Spring - Model Dependent
3661-2 Shift Valve - Model Dependent
367a1-2 Shift Solenoid Valve
367b2-3 Shift Solenoid Valve
3682-3 Shift Valve
3692-3 Shuttle Valve
3701-2 Accumulator Valve Spring
3711-2 Accumulator Valve
3721-2 Accumulator Valve Sleeve
374Actuator Feed Limit Valve
375Actuator Feed Limit Valve Spring
376Bore Plug
377Pressure Control Solenoid Valve
378Pressure Control Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer

Scheme 84

Scheme 84
Scheme 84
CalloutComponent Name
340Manual Valve
350Control Valve Body Assembly
359Bore Plug
360Coiled Spring Pin
380Regulator Apply Valve
381Bore Plug
381Bore Plug
381Bore Plug
381Bore Plug
3824-3 Sequence Valve Spring
3834-3 Sequence Valve
3843-4 Relay Valve
3853-4 Shift Valve
3863-4 Shift Valve Spring
387Reverse Abuse Valve
388Reverse Abuse Valve Spring
3893-2 Downshift Valve
3903-2 Downshift Valve Spring
3913-2 Control Valve
3923-2 Control Valve Spring
3943-2 Control Solenoid Valve
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
396TCC PWM Solenoid Valve
397Regulator Apply Spring
398Isolator Valve
399Pump Ball Check Valve - M33 Only

Scheme 85

Scheme 85
Scheme 85
CalloutComponent Name
6003-4 Clutch Boost (5) Spring Assembly
601Thrust Washer - Pump to Drum
6022-4 Band Assembly
603Reverse Input Clutch Bushing - Front
605Reverse Input Clutch Housing and Drum Assembly
606Reverse Input Clutch Bushing - Rear
607Reverse Input Clutch Piston Assembly
608aReverse Input Clutch Seal - Inner
608bReverse Input Clutch Seal - Outer
609Reverse Input Clutch Spring Assembly
610Reverse Input Clutch Spring Retainer Ring
611Reverse Input Clutch Plate - Belleville
612aReverse Input Clutch Turbulator Plate - Steel
612bReverse Input Clutch Plate Assembly - Fiber
613Reverse Input Clutch Backing Plate - Selective
614Reverse Input Clutch Retaining Ring
615Stator Shaft/Selective Washer Bearing Assembly
616Thrust Washer - Selective
617Check Valve Retainer and Ball Assembly
618O-Ring Seal - Location Model Dependent
619Oil Seal Ring - Solid
620Retainer and Checkball Assembly
621Input Housing and Shaft Assembly - Model Dependent
622O-Ring Input to Forward Clutch Housing Seal
6233rd and 4th Clutch Piston
6253rd and 4th Clutch Ring - Apply
6263rd and 4th Clutch Spring Assembly
627Forward Clutch Housing Retainer and Ball Assembly
628Forward Clutch Housing
630Forward Clutch Piston
632Overrun Clutch Piston
633Overrun Clutch Ball
634Overrun Clutch Spring Assembly
635Overrun Clutch Spring Retainer Snap Ring
636Input Housing to Output Shaft Seal
637Input Sun Gear Bearing Assembly
638Overrun Clutch Hub Retaining Snap Ring
639Overrun Clutch Hub
640Forward Sprag Clutch Inner Race and Input Sun Gear Assembly
642Forward Sprag Assembly
643Sprag Assembly Retainer Ring
643Sprag Assembly Retainer Ring
644Forward Clutch Race - Outer
645aOverrun Clutch Plate - Steel
645bOverrun Clutch Plate Assembly - Fiber
646Forward Clutch Plate - Apply
648Forward Clutch Plate - Waved
649aForward Clutch Plate - Steel
649bForward Clutch Plate Assembly - Fiber
650Forward Clutch Backing Plate - Selective
651Forward Clutch Backing Plate Retainer Ring
6533rd and 4th Clutch Apply Plate - Stepped
6533rd and 4th Clutch Apply Plate - Stepped
6533rd and 4th Clutch Apply Plate - Stepped
654a3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 Plates
654a3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 plates
654a3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 plates
654b3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
654b3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
654b3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
6553rd and 4th Clutch Backing Plate - Selective - Model Dependent
6553rd and 4th Clutch Backing Plate - Selective - Model Dependent
6553rd and 4th Clutch Backing Plate - Selective - Model Dependent
6563rd and 4th Clutch Backing Plate Retainer Ring
657Input Sun Gear Front Bushing
659Input Sun Gear Rear Bushing
688Cup Plug
698Orificed Cup Plug

Scheme 86

Scheme 86
Scheme 86
CalloutComponent Name
661Output Shaft to Input Carrier Retainer
662Input Carrier Assembly - 4 or 5 Pinion-Model Dependent
662Input Carrier Assembly
663Thrust Bearing Assembly - Input Carrier to Reaction Shaft
664Input Internal Gear
665Reaction Carrier Shaft Front Bushing
666Reaction Carrier Shaft
667Reaction Carrier Shaft Rear Bushing
668Reaction Shaft/Internal Gear Retainer Ring
669aThrust Bearing Assembly - Reaction Shaft Shell
669bThrust Bearing Assembly - Reaction Shaft Shell - Some Models
670Reaction Sun Shell
671Reaction Sun Gear Retainer Ring
672Reaction Sun Bushing
673Reaction Sun Gear
674Thrust Washer - Race/Reaction Shell
675Low and Reverse Roller Clutch Race
676Low and Reverse Support to Case Retainer Ring
677Low and Reverse Roller Assembly Retainer Ring - Cam
677Low and Reverse Roller Assembly Retainer Ring - Cam
678Low and Reverse Roller Clutch Assembly
679Low and Reverse Clutch Support Assembly
680Low and Reverse Clutch Support Retainer Spring
681Reaction Carrier Assembly - 4 or 5 Pinion-Model Dependent
681Reaction Carrier Assembly - 4 or 5 Pinion-Model Dependent
682aLow and Reverse Clutch Plat - Waved
682bSpacer Low and Reverse Clutch Plate - Selective
682cLow and Reverse Clutch Plate Assembly - Fiber
682dLow and Reverse Clutch Turbulator Plate - Steel
683Thrust Bearing Assembly - Reaction Carrier/Support
684Internal Reaction Gear
685Internal Reaction Gear Support
686Reaction Gear/Support Retainer Ring
687Output Shaft
690Output Shaft Sleeve - Model Dependent 2WD only
691Output Shaft Seal - Model Dependent 2WD only
692Reaction Gear Support to Case Bearing
693Low and Reverse Clutch Retainer Ring
694Low and Reverse Clutch Spring Assembly
695Low and Reverse Clutch Piston
696aLow and Reverse Clutch Seal - Outer
696bLow and Reverse Clutch Seal - Center
696cLow and Reverse Clutch Seal - Inner
697Oil Deflector - High Output Models Only
699Internal Transmission Speed Sensor Rotor

Scheme 87

Scheme 87
Scheme 87
CalloutComponent Name
78Steel Cup Plug
79Parking Brake Pawl Shaft
80Parking Pawl Return Spring
81Parking Brake Pawl
82Manual Shaft Seal
83Manual Shaft Retainer
84Manual Shaft - Model Dependent
85Parking Lock Actuator Assembly
86Parking Lock Bracket
87Parking Lock Bracket Bolt
88Inside Detent Lever
89Manual Valve Link
90Hex Head Nut

Scheme 88

Scheme 88: Component Location
Scheme 88: Component Location
CalloutComponent Name
1Converter Housing
2Reverse Input Clutch
3Input Clutch Housing
4Overrun Clutch
5Forward Clutch
6Forward Sprag Clutch Assembly
73-4 Clutch
8Input Planetary Gear Set
9Lo and Reverse Clutch
10Lo Roller Clutch Assembly
11Reaction Planetary Gear Set
12Speed Sensor
13Output Shaft
14Case Extension
15Main Section Case
16Parking Pawl
17Parking Lock Actuator Assembly
18Control Valve Assembly
19Manual Shaft
20Inside Detent Lever
21Secondary Fluid Pump Assembly - M33 Models Only
222-4 Band Assembly
23Pump Assembly
24Stator Roller Clutch
25Torque Converter Assembly
26Turbine Shaft

Scheme 89

Scheme 89
Scheme 89
CalloutComponent Name
3Pump to Case Bolt O-Ring
5Oil Seal - Pump to Case - Model Dependent
5Oil Seal - Pump to Case - Model Dependent
18Oil Seal Ring - 2nd Apply Piston-Outer
19Oil Seal Ring - 2nd Apply Piston-Inner
21O-Ring Seal
26Oil Seal Ring - 4th Apply Piston-Outer
27O-Ring Seal - 2-4 Servo Cover
30Case Extension to Case Seal
34Case Extension Oil Seal Assembly
37O-Ring Seal - Speed Sensor to Case Extension
106Case Oil Seal Assembly - Y-Car Only
230Oil Seal Ring - Stator Shaft
243Oil Seal Assembly
608aReverse Input Clutch Seal - Inner
608bReverse Input Clutch Seal - Outer
618O-Ring Seal - Turbine Shaft/Selective Washer
619Oil Seal Ring - Solid
622O-Ring Input to Forward Housing Seal
6233rd and 4th Clutch Piston
630Forward Clutch Piston
632Overrun Clutch Piston
636Input Housing to Output Shaft Seal
691Output Shaft - Model Dependent Seal
696aLow and Reverse Clutch - Outer Seal
696bLow and Reverse Clutch - Center Seal
696cLow and Reverse Clutch - Inner Seal

Scheme 90

Scheme 90
Scheme 90
CalloutComponent Name
7Case Bushing
33Case Extension Bushing
234Stator Shaft Bushing - Front
241Stator Shaft Bushing - Rear
242Oil Pump Body Bushing
601Thrust Washer - Pump to Drum
603Reverse Input Cl. Bushing - Front
606Reverse Input Clutch Bushing - Rear
615Stator Shaft/Selective Washer Bearing Assembly
616Thrust Washer - Selective
637Input Sun Gear Bearing Assembly
657Input Sun Gear Bushing - Front
659Input Sun Gear Bushing - Rear
663Thrust Bearing Assembly - Input Carrier to Reaction Shaft
665Reaction Carrier Shaft Bushing - Front
667Reaction Carrier Shaft Bushing - Rear
669aThrust Washer - Reaction Shaft/Shell
669bThrust Washer - Reaction Shaft/Shell - Some Models
672Reaction Gear Bushing
674Thrust Washer - Race/Reaction Shell
683Thrust Bearing Assembly - Reaction Carrier/Support
692Reaction Gear Support to Case Bearing

Scheme 91

Scheme 91
Scheme 91
CalloutComponent Name
340Manual Valve
353Forward Accumulator Oil Seal
354Forward Accumulator Piston
355Forward Accumulator Pin
356Forward Accumulator Spring
357Forward Abuse Valve
358Forward Abuse Valve Spring
359Bore Plug
359Bore Plug
360Coiled Spring Pin
360Coiled Spring Pin
360Coiled Spring Pin
361Low Overrun Valve
362Low Overrun Valve Spring
363Forward Accumulator Cover
364Forward Accumulator Cover Bolt
364Forward Accumulator Cover Bolt
3651-2 Shift Valve Spring - Model Dependent
3661-2 Shift Valve - Model Dependent
367a1-2 Shift Solenoid Valve
367b2-3 Shift Solenoid Valve
3682-3 Shift Valve
3692-3 Shuttle Valve
3701-2 Accumulator Valve Spring
3711-2 Accumulator Valve
3721-2 Accumulator Valve Sleeve
374Actuator Feed Limit Valve
375Actuator Feed Limit Valve Spring
376Bore Plug
377Pressure Control Solenoid Valve
378Pressure Control Solenoid Retainer
380Regulator Apply Valve - Model Dependent
381Bore Plug
381Bore Plug
381Bore Plug
381Bore Plug
3824-3 Sequence Valve Spring
3834-3 Sequence Valve
3843-4 Relay Valve
3853-4 Shift Valve
3863-4 Shift Valve Spring
387Reverse Abuse Valve
388Reverse Abuse Valve Spring
3893-2 Downshift Valve
3903-2 Downshift Valve Spring
3913-2 Control Valve
3923-2 Control Valve Spring
3943-2 Control Solenoid Valve
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
395Bore Plug and Solenoid Retainer
396TCC PWM Solenoid Valve
397Regulator Apply Spring
398Isolator Valve

Transmission Component and System Description

The mechanical components of the 4L60-E are as follows

  1. A torque converter with an electronically controlled capacity clutch (ECCC) This transmission is equipped with an ECCC. The pressure plate does not fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in SECOND, THIRD, and FOURTH gears, depending on the vehicle application. ECCC was developed to reduce the possibility of noise, vibration, or chuggle caused by TCC apply. Typical apply speeds are 49-52 km/h (30-32 mph) in THIRD gear and 65-73 km/h (40-45 mph) in FOURTH gear. Full lockup is available at highway speeds on some applications.
  2. Torque converter assembly
  3. Servo assembly and 2-4 band assembly
  4. Reverse input clutch and housing
  5. Overrun clutch
  6. Forward clutch
  7. 3-4 clutch
  8. Forward sprag clutch assembly
  9. Lo and reverse roller clutch assembly
  10. Lo and reverse clutch assembly
  11. Two planetary gear sets: Input and Reaction
  12. Oil pump assembly
  13. Control valve body assembly

The electrical components of the 4L60-E are as follows

  1. 1-2 and 2-3 shift solenoid valves
  2. 3-2 shift solenoid valve assembly
  3. Transmission pressure control (PC) solenoid
  4. Torque converter clutch (TCC) solenoid valve
  5. TCC pulse width modulation (PWM) solenoid valve
  6. Automatic transmission fluid pressure (TFP) manual valve position switch
  7. Automatic transmission fluid temperature (TFT) sensor
  8. Vehicle speed sensor assembly

For more information, refer to Electronic Component Description .

More articles — Automatic Transmission - 4L60-E/4L65-E - Introduction, Service & Replacement