GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 TrailBlazer - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4 Speed-MU4 🢒 Disassembled Views
Figure 1:

External Components
Object Number: 964995 Size: LF
(1)Bolt
(2)Transaxle Apply Tube Clamp No. 3
(3)Governor Pressure Tube
(4)Breather Plug Hose
(5)Breather Plug
(6)O-ring
(7)Oil Cooler Pipe Unions
(8)Snap Ring
(9)O-ring
(10)2nd Coast Brake Cover
(11)O-ring
(12)2nd Coast Brake Piston
(13)Spring
(14)O-ring
(15)O-ring
(16)Transaxle Case Plug No. 1
(17)Bolt
(18)Transmission Wiring Harness
(19)Spring
(20)Check Ball Body
(21)PNP Switch
(22)Bolt
(23)Transmission Control Shaft Lever
(24)Nut
(25)Nut
(26)Spring
(27)O-ring
(28)C3 Accumulator
(29)O-ring
(30)B2 Accumulator
(31)O-ring
(32)C2 Accumulator
(33)O-ring
(34)C1 Accumulator
(35)O-ring
(36)O-ring
(37)Spring
(38)O-ring
(39)Spring
(40)O-ring
(41)Spring
(42)Oil Pan
(43)Bolt
(44)Magnets
(45)Oil Pan Gasket
(46)Bolt
(47)Oil Filter
(48)Bolt
(49)Bolt
(50)Manual Detent Spring Cover
(51)Manual Detent Spring Sub-Assembly
(52)Valve Body Assembly
(53)Washer Plate
(54)Retainer Spring
(55)Manual Valve Lever Shaft
(56)Roll Pin
(57)Manual Valve Lever Sub-Assembly
(58)Spacer
(59)Parking Lock Rod Sub-Assembly
Figure 2:

Internal Components (1 of 2)
Object Number: 965054 Size: LF
(1)Bolt
(2)Oil Pump Assembly
(3)O-ring
(4)Direct Clutch Assembly
(5)Clutch Drum Thrust Washer
(6)Thrust Roller Bearing
(7)Forward Clutch Assembly
(8)Thrust Roller Bearing
(9)2nd Coast Brake Band Assembly
(10)Pin
(11)Thrust Roller Bearing
(12)Front Planetary Ring Gear
(13)Thrust Bearing Race
(14)Front Planetary Gear Assembly
(15)Planetary Sun Gear Sub-Assembly
(16)Planetary Carrier Thrust Washer No. 3
(17)1 Way Clutch Assembly
(18)Discs
(19)2nd Brake Piston Assembly
(20)Snap Ring
(21)2nd Brake Piston Return Spring Sub-Assembly
(22)Plates
(23)Flange
(24)Snap Ring
(25)1 Way Clutch No. 2 Assembly
(26)Planetary Carrier Thrust Washers
(27)Thrust Bearing Race
(28)Thrust Roller Bearing
(29)Intermediate Shaft Sub-Assembly
(30)Oil Seal
(31)Snap Ring
(32)O-rings
(33)1st & Reverse Brake Piston
(34)Snap Ring
(35)Discs
(36)Snap Ring
(37)Flange
(38)Plates
(39)1st & Reverse Brake Return Spring Sub-Assembly
(40)Transaxle Case
(41)Governor Apply Gasket No. 1
(42)Brake Drum Gasket
(43)Rear Transaxle Case Cover
(44)Bolt
(45)Counter Drive Gear Nut
(46)Counter Drive Gear
(47)Counter Drive Gear Bearing
(48)Snap Ring
(49)Bolt
(50)Brake Band Guide Plate Retainer
(51)2nd Coast Brake Band Guide Plate
Figure 3:

Internal Components (2 of 2)
Object Number: 965093 Size: LF
(1)Transaxle Housing Oil Seal
(2)Transaxle Housing
(3)Underdrive Roller Bearing
(4)Roller Bearing Retainer
(5)Bolt
(6)Seal Washer
(7)Transmission Lube Apply Tube
(8)Transmission Gear Lube Apply Tube
(9)Transaxle Apply Tube Clamp No.1
(10)Transaxle Apply Tube Clamp No.2
(11)Bolt
(12)Transaxle Apply Tube Clamp No.1
(13)Underdrive Brake Piston
(14)Disc
(15)Snap Ring
(16)Overdrive Clutch Drum Oil Seal Ring
(17)Underdrive 1 Way Clutch Assembly
(18)Underdrive Clutch Drum Sub - assembly
(19)Thrust Roller Bearing
(20)Countershaft Assembly
(21)Underdrive Clutch Drum Thrust Washer
(22)Underdrive 1 Way Clutch Retainer
(23)Flange
(24)Plate
(25)Underdrive Brake Return Spring Sub - assembly
(26)O - ring
(27)Counter Driven Gear Nut
(28)Counter Driven Gear
(29)Thrust Needle Roller Bearing
(30)Roller Bearing
(31)Plate Washer
(32)Parking Lock Pawl
(33)Parking Lock Pawl Shaft
(34)Pawl Shaft Clamp
(35)Bolt
(36)Front Drive Pinion Front Tapered Roller Bearing
(37)Front Drive Pinion Rear Tapered Roller Bearing
(38)Speedometer Drive Gear
(39)Front Differential Case
(40)Bolt
(41)Transmission Case Plate No.1
(42)Governor Apply Gasket No.2
(43)Transaxle Case Oil Seal
(44)Automatic Transmission Case Sub - assembly
(45)Transmission Case Plate No.3
(46)Bolt
(47)Bolt
(48)Transmission Case Plate No.2
(49)Transmission Case Plate No.2 Gasket
(50)O - ring
(51)B-4 Accumulator Piston
(52)Spring
(53)Guide Sleeve
(54)Spring Guide Sleeve
(55)Pawl Stopper Plate
(56)Bolt
(57)Spring Guide Sleeve
Figure 4:

Oil Pump
Object Number: 965102 Size: MF
(1)Oil Pump Front Cover
(2)Front Oil Pump Driven Gear
(3)Front Oil Pump Drive Gear
(4)Stator Shaft Assembly
(5)Bolt
(6)Clutch Drum Oil Seal Ring
(7)Stator Shaft Clutch Drum Thrust Washer
(8)Front Oil Pump Oil Seal
Figure 5:

Forward Clutch and Related Components
Object Number: 965116 Size: MF
(1)Input Shaft Oil Seal Rings
(2)Input Shaft Sub-Assembly
(3)Forward Clutch Piston Sub-Assembly
(4)Forward Clutch Return Spring Sub-Assembly
(5)Forward Clutch Return Spring Sub-Assembly
(6)Snap Ring
(7)Snap Ring
(8)Discs
(9)Plates
Figure 6:

Direct Clutch and Related Components
Object Number: 965131 Size: MF
(1)Direct Clutch Drum Sub-Assembly
(2)Direct Clutch Piston Sub-Assembly
(3)O-rings
(4)Direct Clutch Return Spring Sub-Assembly
(5)Snap Ring
(6)Snap Ring
(7)Flange
(8)Discs
(9)Plates
Figure 7:

Coast Brake Piston
Object Number: 965190 Size: MF
(1)E-ring
(2)2nd Coast Brake Piston
(3)2nd Coast Brake Piston Oil Seal Ring
(4)2nd Coast Brake Piston Spring
(5)2nd Coast Brake Piston Plate Washer
(6)2nd Coast Brake Piston Rod
Figure 8:

Underdrive Clutch
Object Number: 965197 Size: MF
(1)Snap Ring
(2)Plates
(3)Underdrive Return Spring Shaft Snap Ring
(4)Underdrive Clutch Return Spring Plate
(5)Underdrive Clutch Piston Sub-Assembly
(6)Underdrive Clutch Drum Sub-Assembly
(7)O-ring
(8)Underdrive Clutch Return Spring Sub-Assembly
(9)Discs
(10)Flange
Figure 9:

2nd Brake Piston and Related Components
Object Number: 965203 Size: MF
(1)Snap Ring
(2)2nd Brake Piston
(3)O-rings
(4)2nd Brake Cylinder
Figure 10:

Front Planetary and Related Components
Object Number: 965209 Size: MF
(1)Snap Ring
(2)Front Planetary Ring Gear Flange Sub-Assembly
(3)Front Planetary Ring Gear
(4)Planetary Sun Gear Sub-Assembly
(5)Snap Ring
(6)Sun Gear Input Drum
(7)Snap Ring
Figure 11:

Rear Planetary and Related Components
Object Number: 965213 Size: MF
(1)Snap Ring
(2)Snap Ring
(3)1 Way Clutch No. 2
(4)Snap Ring Rear Planetary Gear Assembly
(5)1 Way Clutch Outer Race
(6)Rear Planetary Gear Assembly
Figure 12:

Underdrive Planetary and Related Components
Object Number: 965293 Size: MF
(1)Underdrive Input Shaft Nut
(2)Underdrive Cylinder Roller Bearing
(3)Front Drive Pinion Front Tapered Roller Bearing
(4)Front Differential Drive Pinion Bearing Spacer
(5)Differential Drive Pinion
(6)Front Drive Pinion Rear Tapered Roller Bearing
(7)Snap Ring
(8)Underdrive Input Shaft Sub-Assembly
(9)Underdrive Planetary Ring Gear
(10)Underdrive Planetary Sun Gear Sub-Assembly
(11)Snap Ring
(12)Snap Ring
(13)Underdrive Planetary Gear Assembly
(14)Underdrive Input Shaft Roller Bearing
(15)Underdrive Input Shaft Thrust Bearing Race
Figure 13:

Valve Body Solenoids and Related Components
Object Number: 965335 Size: MF
(1)2 - 3 Shift Solenoid
(2)Bolt
(3)O-rings
(4)TCC Solenoid
(5)Bolt
(6)O-ring
(7)Pressure Control Solenoid
(8)Bracket
(9)Bolt
(10)1 - 2 Shift Solenoid
Figure 14:

Differential Assembly
Object Number: 965356 Size: MF
(1)Front Differential Pinion Shaft Pin
(2)Front Differential Pinion Gear
(3)Front Differential Pinion Thrust Washer
(4)Front Differential Side Gear
(5)Front Differential Side Gear Thrust Washer
(6)Ring Gear
(7)Ring Gear Set Bolt Lock Plate
(8)Bolt
(9)Front Differential Pinion Thrust Washer
(10)Front Differential Pinion Gear
(11)Front Differential Side Gear
(12)Front Differential Side Gear Thrust Washer