GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Oil Pump Base Fluid Passages - Control Valve Body Side


Object Number: 20907  Size: MH
(1)Suction
(1)Suction
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
Figure 2:

Control Valve Body Fluid Passages - Oil Pump Base Side


Object Number: 1205871  Size: LF
(1)Suction
(1)Suction
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(6)Release
(13)PRND4
(25)Reverse
(28)Drive
(41)D21
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)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
Figure 3:

Control Valve Body Fluid Passages (Channel Plate Side)


Object Number: 1205872  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(4)Converter Feed
(6)Release
(6)Release
(6)Release
(7)Apply
(8)Cooler
(8)Cooler
(10)Lube 2
(10)Lube 2
(10)Lube 2
(10)Lube 2
(11)PRN
(12)Lo/PRN
(12)Lo/PRN
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(15)Filtered Actuator Feed
(15)Filtered Actuator Feed
(16)1-2 Signal
(16)1-2 Signal
(16)1-2 Signal
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(19)VBS Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(21)1-2 Accumulator Feed
(22)3-4 Accumulator
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(27)Lo Band
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(28)Drive
(28)Drive
(28)Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(31)Filtered 2-3 Drive
(32)2nd Clutch
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(35)3-4 Drive
(35)3-4 Drive
(35)3-4 Drive
(35)3-4 Drive
(37)Direct Clutch
(38)4th Band
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(40)Coast Clutch
(40)Coast Clutch
(41)D21
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(46)Orificed Exhaust
(46)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
(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
(47)Void
Figure 4:

Control Valve Body to Spacer Plate Gasket


Object Number: 1205874  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(5)TCC Feed Limit
(5)TCC Feed Limit
(6)Release
(6)Release
(6)Release
(7)Apply
(8)Cooler
(10)Lube 2
(10)Lube 2
(10)Lube 2
(11)PRN
(11)PRN
(12)Lo/PRN
(13)PRND4
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(15)Filtered Actuator Feed
(15)Filtered Actuator Feed
(16)1-2 Signal
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(21)1-2 Accumulator Feed
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(22)3-4 Accumulator Feed
(23)2-3 Accumulator
(23)2-3 Accumulator
(24)2-3 Accumulator Feed
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(26)Reverse Clutch
(26)Reverse Clutch
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(28)Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(31)Filtered 2-3 Drive
(32)2nd Clutch
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(35)3-4 Drive
(35)3-4 Drive
(36)Direct Clutch Feed
(36)Direct Clutch Feed
(36)Direct Clutch Feed
(37)Direct Clutch
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(41)D21
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(47)Void
(47)Void
(47)Void
(47)Void
Figure 5:

Spacer Plate - Without Electronic Range Select Mode


Object Number: 1205876  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(5)TCC Feed Limit
(5)TCC Feed Limit
(6)Release
(6)Release
(6)Release
(7)Apply
(8)Cooler
(10)Lube 2
(10)Lube 2
(10)Lube 2
(11)PRN
(12/11)Lo/PRN/PRN
(12)Lo/PRN
(12/44)Lo/PRN/Lo
(13)PRND4
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(15)Filtered Actuator Feed
(15/16)Filtered Actuator Feed/1-2 Signal
(17/15)2-3 Signal/Filtered Actuator Feed
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20/21)1-2/3-4 Accumulator/1-2 Accumulator Feed
(20/21)1-2/3-4 Accumulator/1-2 Accumulator Feed
(20/22)1-2/3-4 Accumulator/3-4 Accumulator Feed
(20/22)1-2/3-4 Accumulator/3-4 Accumulator Feed
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(23)2-3 Accumulator
(23/24)2-3 Accumulator/2-3 Accumulator Feed
(23/24)2-3 Accumulator/2-3 Accumulator Feed
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(25/26)Reverse/Reverse Clutch
(26)Reverse Clutch
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(29/28)Forward Clutch/Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30/32)2-3 Drive/2nd Clutch
(30/32)2-3 Drive/2nd Clutch
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(35)3-4 Drive
(35)3-4 Drive
(35/36)3-4 Drive/Direct Clutch Feed
(35/36)3-4 Drive/Direct Clutch Feed
(36)Direct Clutch Feed
(37/36)Direct Clutch/Direct Clutch Feed
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(41)D21
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45/46)Exhaust/Orificed Exhaust
(45/46)Exhaust/Orificed Exhaust
(47)Void
(47)Void
(47)Void
(47)Void
Figure 6:

Spacer Plate with Bonded Gaskets -  With Electronic Range Select Mode


Object Number: 1206296  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(5)TCC Feed Limit
(5)TCC Feed Limit
(6)Release
(6)Release
(6)Release
(7)Apply
(8)Cooler
(10)Lube 2
(10)Lube 2
(10)Lube 2
(11)PRN
(12)Lo/PRN
(13)PRND4
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(15)Filtered Actuator Feed
(16)1-2 Signal
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(23)2-3 Accumulator
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(26)Reverse Clutch
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(29)Forward Clutch
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(35)3-4 Drive
(35)3-4 Drive
(36)Direct Clutch Feed
(37)Direct Clutch
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(41)D21
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(46)Orificed Exhaust
(47)Void
(47)Void
(47)Void
Figure 7:

Spacer Plate to Channel Plate Gasket


Object Number: 1205877  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(5)TCC Feed Limit
(5)TCC Feed Limit
(6)Release
(6)Release
(6)Release
(7)Apply
(8)Cooler
(10)Lube 2
(10)Lube 2
(10)Lube 2
(11)PRN
(12)Lo/PRN
(12)Lo/PRN
(13)PRND4
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(15)Filtered Actuator Feed
(15)Filtered Actuator Feed
(17)2-3 Signal
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(23)2-3 Accumulator
(23)2-3 Accumulator
(23)2-3 Accumulator
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(26)Reverse Clutch
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(29)Forward Clutch
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(34)TCC Regulated Apply
(35)3-4 Drive
(35)3-4 Drive
(35)3-4 Drive
(36)Direct Clutch Feed
(37)Direct Clutch
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(41)D21
(41)D21
(42)Intermediate Band Feed
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(46)Orificed Exhaust
(46)Orificed Exhaust
(47)Void
(47)Void
Figure 8:

Channel Plate Fluid Passages (Control Valve Body Side)


Object Number: 1205878  Size: LF
(1)Suction
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(2)Line
(3)Decrease
(4)Converter Feed
(4)Converter Feed
(5)TCC Feed Limit
(5)TCC Feed Limit
(6)Release
(6)Release
(6)Release
(7)Apply
(7)Apply
(7)Apply
(7)Apply
(8)Cooler
(8)Cooler
(9)Lube 1
(9)Lube 1
(9)Lube 1
(9)Lube 1
(9)Lube 1
(10)Lube 2
(10)Lube 2
(11)PRN
(11)PRN
(11)PRN
(11)PRN
(11/45)PRN/Exhaust
(12)Lo/PRN
(13)PRND4
(13)PRND4
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(14)Actuator Feed
(17)2-3 Signal
(17)2-3 Signal
(18)Torque Signal
(18)Torque Signal
(18)Torque Signal
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(20)1-2/3-4 Accumulator
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(23)2-3 Accumulator
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(25)Reverse
(27)Lo Band
(27)Lo Band
(27)Lo Band
(27)Lo Band
(28)Drive
(28)Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(30)2-3 Drive
(32)2nd Clutch
(32)2nd Clutch
(32)2nd Clutch
(32)2nd Clutch
(33)TCC Signal (PWM)
(34)TCC Regulated Apply
(35)3-4 Drive
(36)Direct Clutch Feed
(36)Direct Clutch Feed
(37)Direct Clutch
(37)Direct Clutch
(38)4th Band
(38)4th Band
(39)D321
(39)D321
(39)D321
(40)Coast Clutch
(40)Coast Clutch
(41)D21
(41)D21
(42)Intermediate Band Feed
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(43)Intermediate Band
(44)Lo
(44)Lo
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(46)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
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(47)Void
(#1)Ball Check Valve
(#2)Ball Check Valve
(#3)Ball Check Valve
(#4)Ball Check Valve
(#5)Ball Check Valve
(#6)Ball Check Valve
(#7)Ball Check Valve
Figure 9:

Channel Plate Fluid Passages - Case Side


Object Number: 1205879  Size: MF
(1)Suction
(1)Suction
(2)Line
(3)Decrease
(8)Cooler
(9)Lube 1
(9)Lube 1
(9)Lube 1
(10)Lube 2
(21)1-2 Accumulator Feed
(22)3-4 Accumulator Feed
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(27)Lo Band
(28)Drive
(32)2nd Clutch
(32)2nd Clutch
(36)Direct Clutch Feed
(37)Direct Clutch
(38)4th Band
(38)4th Band
(40)Coast Clutch
(43)Intermediate Band
(45)Exhaust
(45)Exhaust
(45)Exhaust
(45)Exhaust
(47)Void
(47)Void
(47)Void
Figure 10:

Channel Plate to Case Gasket


Object Number: 1205880  Size: MF
(1)Suction
(1)Suction
(2)Line
(8)Cooler
(9)Lube 1
(10)Lube 2
(10)Lube 2
(24)2-3 Accumulator Feed
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(27)Lo Band
(27)Lo Band
(28)Drive
(28)Drive
(32)2nd Clutch
(38)4th Band
(38)4th Band
(38)4th Band
(43)Intermediate Band
(43)Intermediate Band
(45)Exhaust
(47)Void
(47)Void
(47)Void
Figure 11:

Case and Driven Sprocket Support Fluid Passages - Channel Plate Side


Object Number: 1205881  Size: LF
(1)Suction
(1)Suction
(1)Suction
(2)Line
(8)Cooler
(8)Cooler
(9)Lube 1
(9)Lube 1
(9)Lube 1
(9)Lube 1
(9)Lube 1
(9)Lube 1
(10)Lube 2
(10)Lube 2
(24)2-3 Accumulator Feed
(24)2-3 Accumulator Feed
(25)Reverse
(25)Reverse
(26)Reverse Clutch
(26)Reverse Clutch
(27)Lo Band
(27)Lo Band
(28)Drive
(28)Drive
(32)2nd Clutch
(32)2nd Clutch
(37)Direct Clutch
(37)Direct Clutch
(38)4th Band
(38)4th Band
(38)4th Band
(38)4th Band
(40)Coast Clutch
(40)Coast Clutch
(43)Intermediate Band
(43)Intermediate Band
(45)Exhaust
(47)Void
(47)Void
(48)Oil Level Control
(48)Oil Level Control
Figure 12:

Case Fluid Passages - Bottom


Object Number: 20897  Size: LF
(1)Suction
(10)Lube 2
(10)Lube 2
(25)Reverse
(25)Reverse
(27)Lo Band
(27)Lo Band
(29)Forward Clutch
(29)Forward Clutch
(38)4th Band
(43)Intermediate Band
(47)Void
(47)Void
(47)Void
(48)Oil Level Control
(48)Oil Level Control