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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Description and Operation >> Fluid Passages

Fluid Passages

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pump Body Fluid Passages (Pump Cover Side)
GM1462846Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Suction (intake)
2 Decrease
2 Decrease
3 Line
3 Line
3 Line
4 Converter Feed
4 Converter Feed
4 Converter Feed
5 Release
7 To Cooler
8 Lube from Cooler
11 Torque Signal
16 Reverse Input
16 Reverse Input
29 3-4 Clutch
37 Overrun Clutch
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
45 Vent
46 Seal Drain
47 Void
47 Void
48 Regulated Apply
Fig 2: Pump Cover Fluid Passages (Pump Body Side)
GM338512Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Suction (intake)
1 Suction (intake)
2 Decrease
2 Decrease
2 Decrease
2 Decrease
3 Line
3 Line
3 Line
3 Line
3 Line
3 Line
4 Converter Feed
4 Converter Feed
4 Converter Feed
4 Converter Feed
5 Release
5 Release
6 Apply
7 To Cooler
8 Lube from Cooler
8 Lube from Cooler
11 Torque Signal
16 Reverse Input
16 Reverse Input
16 Reverse Input
16 Reverse Input
18 Forward Clutch Feed
29 3-4 Clutch
29 3-4 Clutch
37 Overrun Clutch
37 Overrun Clutch
37 Overrun Clutch
37 Overrun Clutch
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
45 Vent
46 Seal Drain
47 Void
47 Void
47 Void
48 Regulated Apply
48 Regulated Apply
232 Oil Pump Cover Screen
237 Check Valve Retainer and Ball Assembly
237 Check Valve Retainer and Ball Assembly
238 Converter Clutch Signal Orificed Cup Plug
240 Orificed Cup Plug
Fig 3: Pump Cover Fluid Passages (Case Side)
GM1552973Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Suction (Intake)
2 Decrease
2 Decrease
3 Line
3 Line
3 Line
5 Release
7 To Cooler
8 Lube from Cooler
8 Lube from Cooler
11 Torque Signal
16 Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
18 Forward Clutch Feed
18 Forward Clutch Feed
29 3-4 Clutch
29 3-4 Clutch
37 Overrun Clutch
37 Overrun Clutch
37 Overrun Clutch
43 Exhaust
43 Exhaust
43 Exhaust
45 Vent
46 Seal Drain
47 Void
48 Regulated Apply
232 Oil Pump Cover Screen
237 Check Valve Retainer and Ball Assembly
237 Check Valve Retainer and Ball Assembly
240 Orificed Cup Plug
240 Orificed Cup Plug
Fig 4: Case Fluid Passages (Pump Cover Side)
GM213848Courtesy of GENERAL MOTORS CORP.
Callout Component Name
3 Line
3 Line
3 Line
7 To Cooler
7 To Cooler
8 Lube from Cooler
8 Lube from Cooler
10 Oil Cooler Pipe Connector
10 Oil Cooler Pipe Connector
11 Torque Signal
11 Torque Signal
16 Reverse Input
16 Reverse Input
18 Forward Clutch Feed
18 Forward Clutch Feed
29 3-4 Clutch
29 3-4 Clutch
37 Overrun Clutch
37 Overrun Clutch
39 Pressure Plug
45 Vent
48 Regulated Apply
48 Regulated Apply
Fig 5: Case Fluid Passages (Control Valve Body Side)
GM338530Courtesy of GENERAL MOTORS CORP.
Callout Component Name
#1 Checkball (91)
#7 3rd Accumulator Retainer and Ball Assembly (40)
#10 Checkball (42)
3 Line
3 Line
3 Line
3 Line
3 Line
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
10 Filtered Actuator Feed
11 Torque Signal
11 Torque Signal
11 Torque Signal
11 Torque Signal
11 Torque Signal
12 PR
12 PR
12 PR
12 PR
12 PR
13 D4-3-2
13 D4-3-2
14 Lo/Reverse
14 Lo/Reverse
14 Lo/Reverse
15 Reverse
16 Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
17 D4
17 D4
17 D4
17 D4
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
19 Rear Lube
20 Accumulator
21 Orificed Accumulator
22 Signal A
22 Signal A
22 Signal A
24 2nd
24 2nd
24 2nd
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
26 C.C. Signal
26 C.C. Signal
27 3-4 Signal
27 3-4 Signal
28 3rd Accumulator
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
30 4th Signal
31 Servo Feed
32 4th
32 4th
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
34 D3
34 D3
34 D3
34 D3
34 D3
35 Overrun
35 Overrun
36 Overrun Clutch Feed
36 Overrun Clutch Feed
37 Overrun Clutch
37 Overrun Clutch
37 Overrun Clutch
38 D2
38 D2
38 D2
38 D2
39 Orificed D2
41 Lo
41 Lo
41 Lo
42 Lo/1st
42 Lo/1st
43 Exhaust
43 Exhaust
44 Orificed Exhaust
44 Orificed Exhaust
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
48 Regulated Apply
48 Regulated Apply
Fig 6: Spacer Plate to Case Gasket - M30/M32
GM338537Courtesy of GENERAL MOTORS CORP.
Callout Component Name
3 Line
3 Line
3 Line
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
11 Torque Signal
11 Torque Signal
11 Torque Signal
12 PR
12 PR
12 PR
12 PR
12 PR
13 D4-3-2
13 D4-3-2
14 Lo/Reverse
14 Lo/Reverse
14 Lo/Reverse
15 Reverse
15 Reverse
16 Reverse Input (Rev. Cl.)
16 Reverse Input (Rev. Cl.)
16 Reverse Input (Rev. Cl.)
17 D4
17 D4
17 D4
17 D4
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
20 Accumulator
20 Accumulator
20 Accumulator
20 Accumulator
21 Orificed Accumulator
21 Orificed Accumulator
22 Signal A
22 Signal A
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
26 C.C. Signal
26 C.C. Signal
26 C.C. Signal
27 3-4 Signal
27 3-4 Signal
27 3-4 Signal
28 3rd Accumulator
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
30 4th Signal
30 4th Signal
31 Servo Feed
31 Servo Feed
31 Servo Feed
32 4th
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
34 D3
34 D3
34 D3
34 D3
34 D3
34 D3
35 Overrun
35 Overrun
36 Overrun Clutch Feed
36 Overrun Clutch Feed
37 Overrun Clutch
38 D2
38 D2
38 D2
38 D2
39 Orificed D2
39 Orificed D2
41 Lo
41 Lo
41 Lo
41 Lo
42 Lo/1st
42 Lo/1st
43 Exhaust
43 Exhaust
44 Orificed Exhaust
44 Orificed Exhaust
47 Void
47 Void
48 Regulated Apply
48 Regulated Apply
Fig 7: Spacer Plate Fluid Passages
GM1365436Courtesy of GENERAL MOTORS CORP.
Callout Component Name
3 Line
3 Line
3 Line
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9/10 Actuator Feed Limit/Filtered Actuator Feed
9/10 Actuator Feed Limit/Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10/22 Filtered Actuator Feed/Signal A
10/23 Filtered Actuator Feed/Signal B
11 Torque Signal
11 Torque Signal
11 Torque Signal
12 PR
12 PR
12 PR
12 PR
12 PR
13 D4-3-2
13 D4-3-2
14 Lo/Reverse
14 Lo/Reverse
14 Lo/Reverse
15 Reverse
15 Reverse
15/16 Reverse/Reverse Input (Rev. Clutch
15/16 Reverse/Reverse Input (Rev. Clutch
16 Reverse Input (Rev. Clutch
17 D4
17 D4
17 D4
17 D4
17 D4
17/18 D4
17/18 D4
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
20 Accumulator
20 Accumulator
20 Accumulator
20/21 Accumulator/Orificed Accumulator
20/21 Accumulator/Orificed Accumulator
21 Orificed Accumulator
22 Signal A
22 Signal A
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24/25 2nd/2nd Clutch
24/25 2nd/2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
26 C.C. Signal
26 C.C. Signal
27 3-4 Signal
27 3-4 Signal
27/29 3-4 Signal
27/29 3-4 Signal
28 3rd Accumulator
29/28 3-4 Clutch/3rd Accumulator
29/28 3-4 Clutch/3rd Accumulator
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
30 4th Signal
30 4th Signal
31 Servo Feed
31 Servo Feed
31 Servo Feed
32 4th
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
34a D3 - Blocked on M33 Models
34a D3 - Blocked on M33 Models
34 D3
34 D3
34 D3
34 D3
34 D3
34 D3
35a Overrun- Blocked on M33 Models
35a Overrun- Blocked on M33 Models
35 Overrun
35/36 Overrun/Overrun Clutch Feed
35/36 Overrun/Overrun Clutch Feed
35/39 Overrun/Orificed D2
36 Overrun Clutch Feed
37 Overrun Clutch
38a D2 - M33 Models Only
38a D2 - M33 Models Only
38 D2
38 D2
38 D2
38 D2
38 D2
38 D2
38/39 D2/Orificed D2
41 Lo
41 Lo
41 Lo
41 Lo
42 Lo/1st
42 Lo/1st
43 Exhaust
43/44 Exhaust/Orificed Exhaust
43/44 Exhaust/Orificed Exhaust
44 Orificed Exhaust
47 Void
48 Regulated Apply
48 Regulated Apply
49 Shift Solenoids Screen
50 Pressure Control Solenoid Screen
Fig 8: Spacer Plate to Control Valve Body Gasket
GM338563Courtesy of GENERAL MOTORS CORP.
Callout Component Name
3 Line
3 Line
3 Line
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
10 Filtered Actuator Feed
11 Torque Signal
11 Torque Signal
11 Torque Signal
12 PR
12 PR
12 PR
12 PR
12 PR
13 D4-3-2
13 D4-3-2
14 Lo/Reverse
14 Lo/Reverse
14 Lo/Reverse
15 Reverse
15 Reverse
15 Reverse
16 Reverse Input (Rev. Cl.)
17 D4
17 D4
17 D4
17 D4
17 D4
17 D4
18 Forward Clutch Feed
18 Forward Clutch Feed
18 Forward Clutch Feed
20 Accumulator
20 Accumulator
20 Accumulator
21 Orificed Accumulator
22 Signal A
22 Signal A
22 Signal A
23 Signal B
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
26 C.C. Signal
26 C.C. Signal
27 3-4 Signal
27 3-4 Signal
28 3rd Accumulator
28 3rd Accumulator
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
30 4th Signal
30 4th Signal
31 Servo Feed
31 Servo Feed
31 Servo Feed
32 4th
33 3-4 Accumulator
33 3-4 Accumulator
33 3-4 Accumulator
34 D3
34 D3
34 D3
34 D3
34 D3
34 D3
35 Overrun
35 Overrun
35/39 Overrun/Orificed D2
36 Overrun Clutch Feed
37 Overrun Clutch
38 D2
38 D2
38 D2
38 D2
38 D2
40 3-2 Signal
40 3-2 Signal
41 Lo
41 Lo
41 Lo
41 Lo
42 Lo/1st
42 Lo/1st
43 Exhaust
43 Exhaust
44 Orificed Exhaust
44 Orificed Exhaust
47 Void
48 Regulated Apply
48 Regulated Apply
Fig 9: Control Valve Body Fluid Passages (Case Side)
GM1364046Courtesy of GENERAL MOTORS CORP.
Callout Component Name
#2 Checkball (61)
#3 Checkball (61)
#4 Checkball (61)
#5 Checkball (61)
#6 Checkball (61)
#8 Checkball (61)
#12 Checkball (61)
3 Line
3 Line
3 Line
3 Line
3 Line
3 Line
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
9 Actuator Feed Limit
10 Filtered Actuator Feed
10 Filtered Actuator Feed
11 Torque Signal
11 Torque Signal
11 Torque Signal
11 Torque Signal
12 PR
12 PR
12 PR
13 D4-3-2
13 D4-3-2
14 Lo/Reverse
14 Lo/Reverse
15 Reverse
15 Reverse
15 Reverse
16 Reverse Input (Rev. Clutch)
17 D4
17 D4
17 D4
17 D4
17 D4
17 D4
17 D4
18 Forward Clutch Feed
18 Forward Clutch Feed
20 Accumulator
20 Accumulator
22 Signal A
22 Signal A
23 Signal B
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
24 2nd
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
26 C.C. Signal
26 C.C. Signal
27 3-4 Signal
27 3-4 Signal
28 3rd Accumulator
28 3rd Accumulator
29 3-4 Clutch
29 3-4 Clutch
29 3-4 Clutch
30 4th Signal
30 4th Signal
31 Servo Feed
31 Servo Feed
31 Servo Feed
32 4th
33 3-4 Accumulator
33 3-4 Accumulator
34 D3
34 D3
34 D3
34 D3
34 D3
35 Overrun
35 Overrun
36 Overrun Clutch Feed
37 Overrun Clutch
38 D2
38 D2
38 D2
40 3-2 Signal
41 Lo
41 Lo
41 Lo
42 Lo/1st
42 Lo/1st
42 Lo/1st
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
43 Exhaust
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
47 Void
48 Regulated Apply
48 Regulated Apply
399 Ball Check Valve - M33 Models
Fig 10: 2-4 Servo Fluid Passages
GM10130Courtesy of GENERAL MOTORS CORP.
Callout Component Name
#7 3rd Accumulator Retainer and Ball Assembly (40)
#7 3rd Accumulator Retainer and Ball Assembly (40)
11 Case Servo Orificed Plug
11 Case Servo Orificed Plug
25 2nd Clutch
25 2nd Clutch
25 2nd Clutch
28 3rd Accumulator
28 3rd Accumulator
28 3rd Accumulator
32 4th
32 4th
32 4th
32 4th
43 Exhaust
43 Exhaust
44 Orificed Exhaust
44 Orificed Exhaust
Fig 11: 1-2 Accumulator Cover Fluid Passages
GM829181Courtesy of GENERAL MOTORS CORP.
Callout Component Name
20 Accumulator
21 Orificed Accumulator
25 2nd Clutch
25 2nd Clutch
Fig 12: 1-2 Accumulator Cover Fluid Passages
GM1283243Courtesy of GENERAL MOTORS CORP.
Callout Component Name
20 Accumulator
21 Orificed Accumulator
25 2nd Clutch
25 2nd Clutch
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