Disassembled Views. GMC Truck TopKick C-Series (Conventional) C4/C5 2004

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Disassembled Views

Figure 1:

Torque Converter Clutch/Converter Housing Assembly


(1)	Torque Converter
(2)	Torque Converter Housing
(3)	Line Pressure Test Hole Plug
(4)	Line Pressure Test Hole Plug O-ring
(5)	Transmission External Oil Filter
(6)	Transmission External Oil Filter Magnet
(7)	Transmission External Oil Filter Adapter
(8)	Torque Converter Housing Bolt, M10 x 1.5 x 50, Flanged Head (18)
(9)	Torque Converter Housing Bolt, M10 x 1.5 x 70, Flanged Head (2)
(10)	Sensor Shipping Cover
(11)	Vehicle Speed Sensor Bolt
(12)	Input Speed Sensor
(13)	Vehicle Speed Sensor O-ring
(14)	Torque Converter Housing Bolt, M10 x 1.5 x 25 (10)
(15)	Transmission Oil Cooler Pipe Connector (2)
(16)	Torque Converter Housing Access Hole Cover

Figure 2:

Torque Converter Housing, 1-2-3-4, 4-5 Clutch Assembly, and 3rd, 5th, and Reverse Clutch Components


(1)	Torque Converter Housing/Oil Pump Cover Assembly
(2)	Torque Converter Housing to Case Gasket
(3)	1-2-3-4, 4-5 Clutch Assembly
(4)	Input Sun Gear Thrust Bearing
(5)	Internal Retaining Ring
(6)	3rd, 5th, and Reverse Clutch Backing Plate
(7)	3rd, 5th, and Reverse Clutch Fiber Plate (4)
(8)	3rd, 5th, and Reverse Clutch Steel Plate (3)
(9)	3rd, 5th, and Reverse Clutch Piston Return Spring Assembly (3)
(10)	3rd, 5th, and Reverse Clutch Spring Plate
(11)	3rd, 5th, and Reverse Clutch Piston Assembly (Bonded Seals)

Figure 3:

Torque Converter Housing/Oil Pump Cover Assembly


(1)	Torque Converter Housing/Oil Pump Cover Assembly
(2)	Torque Converter Housing Bolt, M10 x 1.5 x 50, Flanged Head (10)
(3)	Torque Converter Housing Bolt Seal
(4)	Torque Converter Housing
(5)	Torque Converter Housing Gasket
(6)	Oil Pump Cover Assembly

Figure 4:

Oil Pump Assembly


(1)	Oil Pump Assembly
(2)	Oil Pump O-Ring Seal
(3)	Torque Converter Oil Seal
(4)	Oil Pump Bushing
(5)	Oil Pump Body
(6)	Oil Pump Driven Gear
(7)	Oil Pump Drive Gear
(8)	Locating Pin (2)
(9)	Oil Pump Wear Plate

Figure 5:

OIl Pump Cover


(1)	Oil Pump Cover Assembly
(2)	Oil Pump Cover Assembly Bearing
(3)	Oil Pump Cover
(4)	Bushing, 33.8 mm (1.33 in) ID
(5)	Stator Shaft
(6)	Torque Converter Clutch Valve
(7)	Torque Converter Clutch Valve Spring
(8)	Torque Converter Clutch Valve Stop
(9)	Torque Converter Clutch Valve Retainer
(10)	Torque Converter Clutch Relief Valve
(11)	Torque Converter Clutch Relief Valve Spring
(12)	Torque Converter Clutch Relief Valve Retainer
(13)	Oil Pump Lube Regulator Valve
(14)	Oil Pump Lube Regulator Valve Spring
(15)	O-Ring (Some Models)
(16)	Oil Pump Lube Regulator Valve Stop
(17)	Oil Pump Lube Regulator Valve Stop Retainer
(18)	1-2-3-4 Clutch Backfill Valve
(19)	1-2-3-4 Clutch Backfill Valve Spring
(20)	Retaining Clip
(21)	Pressure Regulator Valve
(22)	Pressure Regulator Valve Spring
(23)	Pressure Regulator Valve Stop
(24)	Pressure Regulator Spring Stop Retainer

Figure 6:

Oil Pump Cover/Oil Pump Assembly and Associated Parts


(1)	Oil Pump Cover Module
(2)	Oil Pump Assembly
(3)	Torque Converter Housing to Case Channel Plate
(4)	Seal Ring, End
(5)	Seal Ring, Middle
(6)	Oil Pump Cover Assembly
(7)	Oil Pump Cover Assembly Bolt, M8 x 1.25 x 55, Flanged Head (5)
(8)	Oil Pump Cover Assembly Thrust Washer
(9)	Overlap Seal Ring (3)

Figure 7:

1-2-3-4, 4-5 Clutch Assembly


(1)	1-2-3-4, 4-5 Clutch Assembly
(2)	Overlap Seal Ring (2)
(3)	Turbine Shaft
(4)	Bushing, 20 mm (0.8 in) ID
(5)	1-2-3-4, 4-5 Clutch Piston Housing Assembly
(6)	Power Take-Off (PTO) Gear
(7)	Turbine Tone Wheel
(8)	1-2-3-4, 4-5 Clutch Bushing
(9)	1-2-3-4, 4-5 Clutch Housing
(10)	O-ring
(11)	External Retaining Ring
(12)	4-5 Clutch Piston Inner Seal
(13)	4-5 Clutch Piston Outer Seal
(14)	4-5 Clutch Balance Piston Seal
(15)	4-5 Clutch Piston
(16)	4-5 Clutch Return Spring
(17)	Clutch Piston Housing Checkball
(18)	1-2-3-4 Clutch Piston Housing
(19)	4-5 Clutch Piston Return Spring Retainer
(20)	4-5 Clutch Balance Piston
(21)	4-5 Clutch Backing Plate Retainer
(22)	1-2-3-4 Clutch Piston Inner Seal
(23)	1-2-3-4 Clutch Piston Outer Seal
(24)	1-2-3-4 Clutch Piston
(25)	1-2-3-4 Clutch Piston Return Spring
(26)	1-2-3-4 Clutch Hub External Retainer Ring
(27)	1-2-3-4 Clutch Balance Piston
(28)	1-2-3-4 Clutch Hub Internal Retainer Ring
(29)	1-2-3-4 Clutch Steel Plate (6)
(30)	1-2-3-4 Clutch Fiber Plate (6)
(31)	1-2-3-4 Clutch Selective Backing Plate 5.84-6.04 mm (0.2299-0.2378 in)
(32)	1-2-3-4 Clutch Backing Plate External Retainer Ring
(33)	1-2-3-4 Clutch Backing Plate Internal Retainer Ring
(34)	1-2-3-4 Clutch Hub Thrust Bearing
(35)	1-2-3-4 Clutch Hub
(36)	4th and 5th Clutch Hub Thrust Bearing
(37)	4-5 Clutch Steel Plate (7)
(38)	4-5 Clutch Fiber Plate (6)
(39)	4-5 Clutch Hub
(40)	Input Sun Gear Thrust Washer
(41)	Input Sun Gear
(42)	Input Sun Gear Flange
(43)	Input Sun Gear External Retaining Ring

Figure 8:

Torque Converter Housing/Automatic Transmission Case and Associated Components


(20)	Torque Converter Housing
(50)	Transmission Case
(70)	Transmission Fill Tube Plug
(71)	Transmission Fill Tube Seal (2)
(72)	Transmission Internal Oil Filter Seal
(73)	Transmission Internal Oil Filter
(74)	Transmission Oil Pan Gasket
(75)	Transmission Oil Pan Magnet
(76)	Transmission Oil Pan
(77)	Transmission Oil Pan Drain Plug O-ring
(78)	Transmission Oil Pan Drain Plug
(79)	Transmission Oil Pan Bolt, M8 x 1.25 x 20 Flanged Head
(81)	Low and Reverse Clutch Housing, 2WD

Figure 9:

Automatic Transmission Case


(1)	Automatic Transmission Case
(2)	Transmission Case Locating Pin
(3)	Transmission Vent Assembly
(4)	Transmission Vent Cap
(5)	Transmission Vent
(6)	Nameplate Rivet
(7)	Nameplate
(8)	Vehicle Speed Sensor Bolt, M6 x 1.0 x 13
(9)	Sensor Shipping Cover
(10)	Turbine Speed Sensor
(11)	Vehicle Speed Sensor O-Ring
(12)	Power Take-Off (PTO) Cover Gasket (2)
(13)	PTO Cover (2)
(14)	PTO Cover Bolt, M10 x 1.5 x 20, Flanged Head, Coated (12)
(15)	Park/Neutral Position (PNP) Switch
(16)	Shift Lever Nut
(17)	PNP Switch Bolt, M8 x 1.25 x 20 (2)
(18)	Front Splash Shield
(19)	Manual Shift Shaft
(20)	Manual Shift Shaft Seal
(21)	Manual Shift Shaft Pin
(22)	Manual Shift Shaft Detent Lever
(23)	Park Pawl Assembly
(24)	Control Valve Body Locating Pin
(25)	Manual Shift Shaft Nut, M10 x 1.50
(26)	Connector Shipping Cover
(27)	Control Valve Body Assembly
(28)	Control Valve Body Bolt, M6 x 1.0 x 50, Flanged Head (15)
(29)	Manual Shift Shaft Detent Spring
(30)	Manual Shift Shaft Detent Spring Bolt M6 x 1.0 x 12. Flanged Head (2)
(31)	Transmission Wiring Harness Assembly

Figure 10:

2nd Clutch/Low and Reverse Clutch


(1)	2nd Clutch Piston Assembly, Bonded Seals
(2)	Input Internal Ring Gear
(3)	2nd Clutch Spring Plate
(4)	Piston Return Spring Assembly (3)
(5)	2nd Clutch Fiber Plate (5)
(6)	2nd Clutch Steel Plate (4)
(7)	2nd Clutch Backing Plate
(8)	Internal Retaining Ring
(9)	Internal Retaining Ring
(10)	Low and Reverse Clutch Backing Plate
(11)	Low and Reverse Clutch Fiber Plate (6)
(12)	Low and Reverse Clutch Steel Plate (5)
(13)	Low and Reverse Clutch Steel Plate, Selective

Figure 11:

Input Carrier and Ring Gear Assembly, Intermediate Carrier and Ring Gear Assembly, Main Shaft


(1)	Input Carrier and Ring Gear Assembly
(2)	Input Carrier Thrust Bearing
(3)	Intermediate Carrier and Ring Gear Assembly
(4)	Intermediate Carrier Thrust Bearing
(5)	Main Shaft
(6)	Intermediate Sun Gear
(7)	Intermediate Sun Gear Spacer
(8)	Output Sun Gear
(9)	Output Shaft Thrust Bearing

Figure 12:

Input Carrier and Ring Gear Assembly


(1)	Input Carrier and Ring Gear Assembly
(2)	Input Carrier Thrust Washer
(3)	Input Carrier Internal Retaining Ring
(4)	Input Carrier Assembly
(5)	Intermediate and 2nd Clutch Ring Gear

Figure 13:

Intermediate Carrier and Ring Gear Assembly


(1)	Intermediate Carrier and Ring Gear Assembly
(2)	Intermediate Carrier Internal Retaining Ring
(3)	Intermediate Carrier Assembly
(4)	Output Carrier and Low and Reverse Clutch Ring Gear

Figure 14:

Input Carrier Assembly


(1)	Input Carrier Assembly
(2)	Bushing, 53.0 mm (2.09 in) ID
(3)	Input Carrier
(4)	Input Carrier Spindle (4)
(5)	Input Carrier Thrust Washer (4)
(6)	Input Carrier Roller Bearing Assembly (8)
(7)	Input Carrier Pinion Gear (4)
(8)	Input Carrier Thrust Washer (4)

Figure 15:

Intermediate Carrier Assembly


(1)	Intermediate Carrier Assembly
(2)	Intermediate Carrier
(3)	Intermediate Carrier Bushing, 36.0 mm (1.42 in) ID
(4)	Intermediate Carrier Thrust Washer (4)
(5)	Intermediate Carrier Roller Bearing Assembly (4)
(6)	Intermediate Carrier Pinion Gear (4)
(7)	Intermediate Carrier Thrust Washer (4)
(8)	Intermediate Carrier Spindle (4)

Figure 16:

Output Carrier Assembly, Output Shaft, Low and Reverse Clutch Return Spring Assembly, Park Pawl


(1)	Park Pawl Cam Guide
(2)	Park Pawl Support Pin
(3)	Park Pawl
(4)	Park Pawl Return Spring
(5)	Low and Reverse Clutch Piston Return Spring Assembly
(6)	Bushing, 20 mm (0.8 in) ID
(7)	Output Shaft, 2WD
(8)	Output Shaft, 4WD
(9)	Output Carrier Assembly

Figure 17:

Low and Reverse Clutch Piston Housing


(1)	Low and Reverse Clutch Housing Gasket
(2)	Low and Reverse Clutch Housing, 2WD
(3)	Low and Reverse Clutch Housing, 4WD
(4)	Low and Reverse Clutch Housing Bolt, M10 x 1.5 x 40, Flanged Head (16)
(5)	Prop Shaft Front Slip Yoke Oil Seal
(6)	Output Nut, 4WD
(7)	Rear Shipping Cover, 2WD
(8)	Rear Shipping Cover, 4WD

Figure 18:

Output Carrier Assembly


(1)	Output Carrier Assembly
(2)	Output Carrier
(3)	Output Carrier Thrust Washer (4)
(4)	Output Carrier Roller Bearing Assembly (8)
(5)	Output Carrier Pinon Gear (4)
(6)	Output Carrier Thrust Washer (4)
(7)	Output Carrier Planetary Spindle (4)
(8)	Output Carrier Bearing Race

Figure 19:

Low and Reverse Clutch Housing Assembly, 2WD


(1)	Low and Reverse Clutch Housing Assembly, 2WD
(2)	Low and Reverse Clutch Piston
(3)	Low and Reverse Clutch Outer Piston Seal
(4)	Low and Reverse Clutch Inner Piston Seal
(5)	Internal Retaining Ring
(6)	Output Carrier Support Bearing
(7)	Output Speed Sensor Reluctor Wheel
(8)	Low and Reverse Clutch Housing, 2WD
(9)	Vehicle Speed Sensor Bolt, M6 x 1.0 x 13
(10)	Sensor Shipping Cover
(11)	Output Speed Sensor
(12)	Vehicle Speed Sensor O-Ring
(13)	Low and Reverse Clutch Selective Spacer
(14)	Low and Reverse Clutch External Retaining Ring
(15)	Output Shaft Support Bearing
(16)	Low and Reverse Clutch Internal Retaining Ring

Figure 20:

Low and Reverse Clutch Housing Assembly, 4WD


(1)	Low and Reverse Clutch Housing Assembly, 4WD
(2)	Low and Reverse Clutch Piston
(3)	Low and Reverse Clutch Outer Piston Seal
(4)	Low and Reverse Clutch Inner Piston Seal
(5)	Internal Retaining Ring
(6)	Output Carrier Support Bearing
(7)	Output Shaft Bearing Spacer
(8)	Low and Reverse Clutch Housing, 4WD
(9)	Selective Spacer
(10)	External Retaining Ring
(11)	Output Shaft Support Bearing
(12)	Internal Retaining Ring
(13)	Output shaft Retaining Nut, 4WD

Figure 21:

Control Valve Body


(1)	Control Valve Assembly
(2)	Shift Valve Body
(3)	Separator Plate
(4)	Main Valve Body Assembly
(5)	Bolt, M6 x 10 x 50, flanged head , 23
(6)	Reverse Signal Tube
(7)	Bolt, M6 x 10 x 50, Flanged Head
(8)	Pressure Switch Assembly
(9)	Modulated Main Valve Body
(10)	G ON/OFF Solenoid
(11)	Bolt, M6 x 1.0 x 65
(12)	Bolt, M6 x 1.0 x 50

Figure 22:

Shift Valve Body Assembly


(1)	Shift Valve Body Assembly
(2)	Retaining Clip
(3)	Shift Solenoid D Shift Plug
(4)	Shift Solenoid D Shift Spring
(5)	Shift Solenoid D Shift Valve
(6)	Retaining Clip
(7)	Shift Solenoid E Shift Plug
(8)	Shift Solenoid E Shift Spring
(9)	Shift Solenoid E Shift Valve
(10)	Retaining Clip
(11)	Shift Solenoid C Shift Spring
(12)	Shift Solenoid C Shift Valve
(13)	Retaining Clip
(14)	Control Main Spring
(15)	Control Main Valve
(16)	Shift Valve Body
(17)	Shift Solenoid Retainer
(18)	Shift Solenoid Screen
(19)	Shift Solenoid C
(20)	Shift Solenoid O-Ring
(21)	Shift Solenoid O-Ring
(22)	Manual Valve
(23)	Manual Valve Pin

Figure 23:

Main Valve Body Assembly


(1)	Main Valve Body Assembly
(2)	Retaining Clip
(3)	Exhaust Pressure Regulator Valve Spring
(4)	Exhaust Pressure Regulator Valve
(5)	Retaining Clip
(6)	Control Relief Spring
(7)	Control Relief Valve
(8)	Main Valve Body
(9)	Locating Pin (4)
(10)	Locating Pin
(11)	Pressure Control Solenoid A Spring
(12)	Pressure Control Solenoid A Valve
(13)	Pressure Control Solenoid A Spring
(14)	Trim Gain Valve
(15)	Pressure Control Solenoid A
(16)	Pressure Control Solenoid A O-Ring
(17)	Pressure Control Solenoid B Spring
(18)	Pressure Control Solenoid B Valve
(19)	Trim Gain Valve
(20)	Pressure Control Solenoid B
(21)	Pressure Control Solenoid B O-Ring
(22)	Shift Solenoid E
(23)	Shift Solenoid E O-Ring
(24)	Shift Solenoid E O-Ring
(25)	Shift Solenoid D
(26)	Shift Solenoid D O-Ring
(27)	Shift Solenoid D O-Ring
(28)	Torque Converter Clutch Pulse Width Modulated (TCC PWM) Solenoid Spring
(29)	TCC PWM Solenoid Valve
(30)	TCC PWM Solenoid Sleeve
(31)	TCC PWM Solenoid
(32)	TCC PWM Solenoid O-Ring
(33)	TCC PWM Solenoid O-Ring
(34)	TCC PWM Solenoid Retainer
(35)	Shift Solenoid D and E Retainers (2)
(36)	Accumulator Plug (2)
(37)	Accumulator Spring (2)
(38)	Pressure Control Valve Retaining Bracket
(39)	Pressure Control Valve Retaining Bracket Bolt (3)