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Contents

Wiring diagrams Section: Automatic Trans

Automatic Transmission Hydraulic Diagrams - 4L80-E/4L85-E

Automatic Transmission - Allison - (Introduction, Service & Replacement): Specifications
Automatic Transmission - Allison - (Introduction, Service & Replacement): Overview
Automatic Transmission - Allison - (Introduction, Service & Replacement): Adjustments
Automatic Transmission - Allison - (Introduction, Service & Replacement): Diagnosis
Automatic Transmission - Allison - (Introduction, Service & Replacement): Removal & Installation
Automatic Transmission - Allison - (Introduction, Service & Replacement): Overhaul
Automatic Transmission - Allison - (Introduction, Service & Replacement): Maintenance
Automatic Transmission - Allison - (Introduction, Service & Replacement): Wiring
Automatic Transmission - Allison - (Introduction, Service & Replacement): Component Locations
Automatic Transmission - Allison - (Introduction, Service & Replacement): Other

Automatic Transmission Hydraulic Diagrams - 4L60-E/4L65-E

All sections

Automatic Transmission - 4L60-E/4L65-E (Introduction, Service & Replacement): Overview Chevrolet Silverado 3500

Automatic Trans 26 illustrations ~459 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 484

Scheme 484: Automatic Transmission Schematic Icons

Scheme 485

Scheme 486

Scheme 486: Automatic Transmission Controls Schematics

Scheme 487

Scheme 488

Scheme 489

Scheme 490

Scheme 491

Scheme 491: Automatic Transmission Electronic Component Views (M30/M32)

Callout	Component Name
36	Vehicle Speed Sensor (VSS)
66	Torque Converter Clutch (TCC) Solenoid Valve
69	Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
367a	1-2 Shift Solenoid (SS) Valve
367b	2-3 Shift Solenoid (SS) Valve
377	Pressure Control (PC) Solenoid Valve
394	3-2 Shift Solenoid (SS) Valve Assembly
396	Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve

Scheme 492

Callout	Component Name
1	Automatic Transmission 4L60-E/4L65-E
2	Park/Neutral Position (PNP) Switch

Scheme 493

Callout	Component Name
1	Automatic Transmission
2	C175

Scheme 494

Callout	Component Name
1	VSS Sensor
2	Transfer Case

Scheme 495

Callout	Component Name
1	Tow/Haul Switch

Scheme 496

Scheme 496: Automatic Transmission Electronic Component Views (M33 Only)

Callout	Component Name
36	Vehicle Speed Sensor (VSS)
66	Torque Converter Clutch (TCC) Solenoid Valve
69	Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
108	Secondary Fluid Pump Assembly (M33 Models Only)
367a	1-2 Shift Solenoid (SS) Valve
367b	2-3 Shift Solenoid (SS) Valve
377	Pressure Control (PC) Solenoid Valve
394	3-2 Shift Solenoid (SS) Valve Assembly
396	Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid Valve

Callout	Component Name
1	Automatic Transmission 4L60-E/4L65-E
2	Park/Neutral Position (PNP) Switch

Callout	Component Name
1	Automatic Transmission
2	C175

Callout	Component Name
1	VSS Sensor
2	Transfer Case

Scheme 497

Scheme 497: Disassembled Views

Callout	Component Name
1	Torque Converter Assembly - Model Dependent On Size
2	Pump to Case Bolt
3	Pump to Case Bolt O-Ring
4	Oil Pump Assembly
5	A/T Fluid Pump Seal - Pump to Case - Model Dependent
5	A/T Fluid Pump Seal - Pump to Case - Model Dependent
6	Pump Cover to Case Gasket
7	Case Bushing
9	Transmission Vent Assembly
10	Oil Cooler Pipe Connector - Model Dependent
11	Case Servo Plug
12	Servo Return Spring
13	2nd Apply Piston Pin
14	Retainer Ring - 2nd Apply Piston
15	Servo Cushion Spring Retainer
16	Servo Cushion Spring - Outer
17	2nd Apply Piston
18	Oil Seal Ring - 2nd Apply Piston - Outer
19	Oil Seal Ring - 2nd Apply Piston - Inner
20	Servo Piston Housing - Inner
21	O-Ring Seal
22	Servo Apply Pin Spring
23	Servo Apply Pin Washer
24	Retainer Ring - Apply Pin
25	4th Apply Piston
26	Oil Seal Ring - 4th Apply Piston - Outer
27	O-Ring Seal - 2-4 Servo Cover
28	2-4 Servo Cover
29	Servo Cover Retaining Ring
30	Case Extension to Case Seal
31	Case Extension - Model Dependent
32	Case Extension to Case Bolt
33	Case Extension Bushing
34	Case Extension Oil Seal Assembly - Model Dependent
34	Case Extension Oil Seal Assembly - Model Dependent
35	Speed Sensor Retaining Bolt
36	Internal Transmission Speed Sensor
37	O-Ring Seal - ITSS to Case Extension
71	Filter Seal
72	Transmission Oil Filter Assembly - Model Dependent
73	Transmission Oil Pan Gasket
74	Chip Collector Magnet
75	Transmission Oil Pan - Model Dependent
76	Transmission Oil Pan Screw
94	Converter Housing to Case Bolt
95	Oil Cooler Quick Connector - Model Dependent
96	Oil Cooler Quick Connect Clip - Model Dependent
97	Converter Housing Access Hole Plug - Model Dependent
98	Converter Bolt Inspection Plate - Model Dependent
99	Cup D4 Orifice Plug
102	Converter Housing - Model Dependent
103	Main Section Case - Model Dependent
105	Servo Cushion Spring - Inner - Model Dependent
107	A/T Oil Pan Hex Head Plug Assembly - Model Dependent

Scheme 498

Callout	Component Name
38	Transmission Case Plug - Accumulator Bleed
39	Pressure Plug
40	Third Accumulator (#7) Retainer and Ball Assembly
41	Band Anchor Pin
42	Retainer and Ball Assembly - Double Orifice (#10)
43	Accumulator Piston Pin
44	3-4 Accumulator Piston
45	Oil Seal Ring - 3-4 Accumulator Piston
46	3-4 Accumulator Spring - Model Dependent
47	Spacer Plate to Case Gasket
48	Valve Body Spacer Plate
48	Valve Body Spacer Plate
49	Shift Solenoids Screen
50	Pressure Control Solenoid Screen
52	Spacer Plate to Valve Body Gasket
53	Spacer Plate Support Plate
54	1-2 Accumulator Spring - Outer
55	Oil Seal Ring - 1-2 Accumulator
56	1-2 Accumulator Piston
57	1-2 Accumulator Cover and Pin Assembly - Model Dependent
58	Accumulator Cover Bolt
59	Accumulator Cover Bolt
60	Control Body Valve Assembly - Model Dependent
61	Checkball (#2, 3, 4, 5, 6, 8, 12)
62	Valve Body Bolt
63	Manual Detent Spring Assembly
64	Manual Detent Spring Bolt
65	Wiring Harness Pass-Through Connector O-Ring Seal
66	Wiring Harness Solenoid Assembly - Model Dependent
67	O-Ring Seal - Solenoid
68	Hex Washer Head Bolt - Solenoid
69	Transmission Fluid Pressure Manual Valve Position Switch Assembly
70	Pressure Switch Assembly Bolt
77	Spacer Plate Support Bolt
77	Spacer Plate Support Bolt
91	Number 1 Checkball
93	Dipstick Stop Bracket - Model Dependent
103	Main Section Case - Model Dependent
104	1-2 Accumulator Spring - Inner
113	Spacer Plate Support Plate - Colorado/Canyon
114	Accumulator Gasket - Colorado/Canyon
115	Accumulator Bolt - Colorado/Canyon
116	Accumulator Cover - Colorado/Canyon
117	Accumulator Bolt - Colorado/Canyon
118	Accumulator Bolt - Colorado/Canyon

Scheme 499

Callout	Component Name
43	Accumulator Piston Pin
44	3-4 Accumulator Piston
45	Oil Seal Ring - 3-4 Accumulator Piston
46	3-4 Accumulator Spring - Model Dependent
48	Valve Body Spacer Plate with Bonded Gasket
54	1-2 Accumulator Spring - Outer
55	Oil Seal Ring - 1-2 Accumulator
56	1-2 Accumulator Piston
57	1-2 Accumulator Cover and Pin Assembly
58	Accumulator Cover Bolt
59	Accumulator Cover Bolt
60	Control Body Valve Assembly - Model Dependent
65	Wiring Harness Pass-through Connector O-Ring Seal
66	Wiring Harness Solenoid Assembly - Model Dependent
67	O-Ring Seal - Solenoid
68	Hex Washer Head Bolt - Solenoid
69	Transmission Fluid Pressure Manual Valve Position Switch Assembly
70	Pressure Switch Assembly Bolt
75	Transmission Oil Pan
102	Converter Housing
108	Secondary Fluid Pump Assembly
109	Secondary Fluid Pump Bolts
110	Secondary Fluid Pump Bolt
111	Filter Retainer
112	Secondary Fluid Pump Filter

Scheme 500

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

Scheme 501

Callout	Component Name
350	Control Valve Body Assembly
353	Forward Accumulator Oil Seal
354	Forward Accumulator Piston
355	Forward Accumulator Pin
356	Forward Accumulator Spring
357	Forward Abuse Valve
358	Forward Abuse Valve Spring
359	Bore Plug
360	Coiled Spring Pin
360	Coiled Spring Pin
361	Low Overrun Valve
362	Low Overrun Valve Spring
363	Forward Accumulator Cover
364	Forward Accumulator Cover Bolt
364a	Pressure Control Solenoid Retainer Bolt
365	1-2 Shift Valve Spring - Model Dependent
366	1-2 Shift Valve - Model Dependent
367a	1-2 Shift Solenoid Valve
367b	2-3 Shift Solenoid Valve
368	2-3 Shift Valve
369	2-3 Shuttle Valve
370	1-2 Accumulator Valve Spring
371	1-2 Accumulator Valve
372	1-2 Accumulator Valve Sleeve
374	Actuator Feed Limit Valve
375	Actuator Feed Limit Valve Spring
376	Bore Plug
377	Pressure Control Solenoid Valve
378	Pressure Control Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer

Scheme 502

Callout	Component Name
340	Manual Valve
350	Control Valve Body Assembly
359	Bore Plug
360	Coiled Spring Pin
380	Regulator Apply Valve
381	Bore Plug
381	Bore Plug
381	Bore Plug
381	Bore Plug
382	4-3 Sequence Valve Spring
383	4-3 Sequence Valve
384	3-4 Relay Valve
385	3-4 Shift Valve
386	3-4 Shift Valve Spring
387	Reverse Abuse Valve
388	Reverse Abuse Valve Spring
389	3-2 Downshift Valve
390	3-2 Downshift Valve Spring
391	3-2 Control Valve
392	3-2 Control Valve Spring
394	3-2 Control Solenoid Valve
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
396	TCC PWM Solenoid Valve
397	Regulator Apply Spring
398	Isolator Valve
399	Pump Ball Check Valve - M33 Only

Scheme 503

Callout	Component Name
600	3-4 Clutch Boost (5) Spring Assembly
601	Thrust Washer - Pump to Drum
602	2-4 Band Assembly
603	Reverse Input Clutch Bushing - Front
605	Reverse Input Clutch Housing and Drum Assembly
606	Reverse Input Clutch Bushing - Rear
607	Reverse Input Clutch Piston Assembly
608a	Reverse Input Clutch Seal - Inner
608b	Reverse Input Clutch Seal - Outer
609	Reverse Input Clutch Spring Assembly
610	Reverse Input Clutch Spring Retainer Ring
611	Reverse Input Clutch Plate - Belleville
612a	Reverse Input Clutch Turbulator Plate - Steel
612b	Reverse Input Clutch Plate Assembly - Fiber
613	Reverse Input Clutch Backing Plate - Selective
614	Reverse Input Clutch Retaining Ring
615	Stator Shaft/Selective Washer Bearing Assembly
616	Thrust Washer - Selective
617	Check Valve Retainer and Ball Assembly
618	O-Ring Seal - Location Model Dependent
619	Oil Seal Ring - Solid
620	Retainer and Checkball Assembly
621	Input Housing and Shaft Assembly - Model Dependent
622	O-Ring Input to Forward Clutch Housing Seal
623	3rd and 4th Clutch Piston
625	3rd and 4th Clutch Ring - Apply
626	3rd and 4th Clutch Spring Assembly
627	Forward Clutch Housing Retainer and Ball Assembly
628	Forward Clutch Housing
630	Forward Clutch Piston
632	Overrun Clutch Piston
633	Overrun Clutch Ball
634	Overrun Clutch Spring Assembly
635	Overrun Clutch Spring Retainer Snap Ring
636	Input Housing to Output Shaft Seal
637	Input Sun Gear Bearing Assembly
638	Overrun Clutch Hub Retaining Snap Ring
639	Overrun Clutch Hub
640	Forward Sprag Clutch Inner Race and Input Sun Gear Assembly
642	Forward Sprag Assembly
643	Sprag Assembly Retainer Ring
643	Sprag Assembly Retainer Ring
644	Forward Clutch Race - Outer
645a	Overrun Clutch Plate - Steel
645b	Overrun Clutch Plate Assembly - Fiber
646	Forward Clutch Plate - Apply
648	Forward Clutch Plate - Waved
649a	Forward Clutch Plate - Steel
649b	Forward Clutch Plate Assembly - Fiber
650	Forward Clutch Backing Plate - Selective
651	Forward Clutch Backing Plate Retainer Ring
653	3rd and 4th Clutch Apply Plate - Stepped
653	3rd and 4th Clutch Apply Plate - Stepped
653	3rd and 4th Clutch Apply Plate - Stepped
654a	3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 Plates
654a	3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 plates
654a	3rd and 4th Clutch Plate Assembly - Fiber - Quantity Model Dependent 5, 6 or 7 plates
654b	3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
654b	3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
654b	3rd and 4th Clutch Plate - Steel - Quantity Model Dependent
655	3rd and 4th Clutch Backing Plate - Selective - Model Dependent
655	3rd and 4th Clutch Backing Plate - Selective - Model Dependent
655	3rd and 4th Clutch Backing Plate - Selective - Model Dependent
656	3rd and 4th Clutch Backing Plate Retainer Ring
657	Input Sun Gear Front Bushing
659	Input Sun Gear Rear Bushing
688	Cup Plug
698	Orificed Cup Plug

Scheme 504

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

Scheme 505

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

Scheme 506

Scheme 506: Component Location

Callout	Component Name
1	Converter Housing
2	Reverse Input Clutch
3	Input Clutch Housing
4	Overrun Clutch
5	Forward Clutch
6	Forward Sprag Clutch Assembly
7	3-4 Clutch
8	Input Planetary Gear Set
9	Lo and Reverse Clutch
10	Lo Roller Clutch Assembly
11	Reaction Planetary Gear Set
12	Speed Sensor
13	Output Shaft
14	Case Extension
15	Main Section Case
16	Parking Pawl
17	Parking Lock Actuator Assembly
18	Control Valve Assembly
19	Manual Shaft
20	Inside Detent Lever
21	Secondary Fluid Pump Assembly - M33 Models Only
22	2-4 Band Assembly
23	Pump Assembly
24	Stator Roller Clutch
25	Torque Converter Assembly
26	Turbine Shaft

Scheme 507

Callout	Component Name
3	Pump to Case Bolt O-Ring
5	Oil Seal - Pump to Case - Model Dependent
5	Oil Seal - Pump to Case - Model Dependent
18	Oil Seal Ring - 2nd Apply Piston-Outer
19	Oil Seal Ring - 2nd Apply Piston-Inner
21	O-Ring Seal
26	Oil Seal Ring - 4th Apply Piston-Outer
27	O-Ring Seal - 2-4 Servo Cover
30	Case Extension to Case Seal
34	Case Extension Oil Seal Assembly
37	O-Ring Seal - Speed Sensor to Case Extension
106	Case Oil Seal Assembly - Y-Car Only
230	Oil Seal Ring - Stator Shaft
243	Oil Seal Assembly
608a	Reverse Input Clutch Seal - Inner
608b	Reverse Input Clutch Seal - Outer
618	O-Ring Seal - Turbine Shaft/Selective Washer
619	Oil Seal Ring - Solid
622	O-Ring Input to Forward Housing Seal
623	3rd and 4th Clutch Piston
630	Forward Clutch Piston
632	Overrun Clutch Piston
636	Input Housing to Output Shaft Seal
691	Output Shaft - Model Dependent Seal
696a	Low and Reverse Clutch - Outer Seal
696b	Low and Reverse Clutch - Center Seal
696c	Low and Reverse Clutch - Inner Seal

Scheme 508

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

Scheme 509

Callout	Component Name
340	Manual Valve
353	Forward Accumulator Oil Seal
354	Forward Accumulator Piston
355	Forward Accumulator Pin
356	Forward Accumulator Spring
357	Forward Abuse Valve
358	Forward Abuse Valve Spring
359	Bore Plug
359	Bore Plug
360	Coiled Spring Pin
360	Coiled Spring Pin
360	Coiled Spring Pin
361	Low Overrun Valve
362	Low Overrun Valve Spring
363	Forward Accumulator Cover
364	Forward Accumulator Cover Bolt
364	Forward Accumulator Cover Bolt
365	1-2 Shift Valve Spring - Model Dependent
366	1-2 Shift Valve - Model Dependent
367a	1-2 Shift Solenoid Valve
367b	2-3 Shift Solenoid Valve
368	2-3 Shift Valve
369	2-3 Shuttle Valve
370	1-2 Accumulator Valve Spring
371	1-2 Accumulator Valve
372	1-2 Accumulator Valve Sleeve
374	Actuator Feed Limit Valve
375	Actuator Feed Limit Valve Spring
376	Bore Plug
377	Pressure Control Solenoid Valve
378	Pressure Control Solenoid Retainer
380	Regulator Apply Valve - Model Dependent
381	Bore Plug
381	Bore Plug
381	Bore Plug
381	Bore Plug
382	4-3 Sequence Valve Spring
383	4-3 Sequence Valve
384	3-4 Relay Valve
385	3-4 Shift Valve
386	3-4 Shift Valve Spring
387	Reverse Abuse Valve
388	Reverse Abuse Valve Spring
389	3-2 Downshift Valve
390	3-2 Downshift Valve Spring
391	3-2 Control Valve
392	3-2 Control Valve Spring
394	3-2 Control Solenoid Valve
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
395	Bore Plug and Solenoid Retainer
396	TCC PWM Solenoid Valve
397	Regulator Apply Spring
398	Isolator Valve

Transmission Component and System Description

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

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.
Torque converter assembly
Servo assembly and 2-4 band assembly
Reverse input clutch and housing
Overrun clutch
Forward clutch
3-4 clutch
Forward sprag clutch assembly
Lo and reverse roller clutch assembly
Lo and reverse clutch assembly
Two planetary gear sets: Input and Reaction
Oil pump assembly
Control valve body assembly

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

1-2 and 2-3 shift solenoid valves
3-2 shift solenoid valve assembly
Transmission pressure control (PC) solenoid
Torque converter clutch (TCC) solenoid valve
TCC pulse width modulation (PWM) solenoid valve
Automatic transmission fluid pressure (TFP) manual valve position switch
Automatic transmission fluid temperature (TFT) sensor
Vehicle speed sensor assembly
Secondary fluid pump (M33 Only)

For more information, refer to Electronic Component Description (M30/M32) or Electronic Component Description (M33 Only) .