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

Transmission Case and Gear Sets


Object Number: 789365  Size: LF
(1)Countershaft Rear Bearing
(2)Thrust Washer Pin
(3)Transmission Countershaft
(4)Countershaft Front Bearing
(5)Reverse Idler Gear Shaft
(6)Reverse Idler Gear Washer
(7)Reverse Idler Gear Bearing
(8)Reverse Idler Gear
(9)Reverse Idler Gear Washer
(10)Input Shaft Bearing Retainer Bolt
(11)Input Shaft Retainer
(12)Input Shaft Seal
(13)Countershaft Bearing Cap
(14)Countershaft Front Bearing Cup
(15)PTO Cover Bolt
(16)PTO Cover
(17)Chip Magnet
(18)Transmission Case
(19)Countershaft Rear Bearing Cup
(20)Countershaft Bearing Shim
(21)Countershaft Rear Bearing Retainer
(22)Countershaft Rear Bearing Retainer Bolt
(23)Countershaft Thrust Washer
(24)Overdrive Gear Bearing
(25)Countershaft Overdrive Gear
(26)Synchronizer Strut
(27)Synchronizer Spring
(28)Overdrive Synchronizer Sleeve
(29)Overdrive Gear Blocking Ring
(30)Overdrive Clutch Gear
(31)Overdrive Synchronizer Retaining Ring
(32)Overdrive Shift Fork
(33)Shift Fork Lock Pin
(34)Overdrive/Reverse Shift Shaft
(35)Mainshaft Bearing Retainer Bolt
(36)Mainshaft Bearing Retainer
(37)Mainshaft Bearing Shim
(38)Mainshaft Rear Bearing Cup
Figure 2:

Main Drive Gear and Mainshaft Gear Sets


Object Number: 789366  Size: LF
(1)Spacer
(2)Vehicle Speed Sensor Reluctor Wheel
(3)Mainshaft Overdrive Gear
(4)Mainshaft Rear Bearing
(5)Reverse Gear Thrust Washer
(6)Reverse Gear
(7)Reverse Gear Synchronizer Insert
(8)Synchronizer Spring
(9)Reverse Gear Synchronizer Ring
(10)Reverse Shift Detent Spring Sleeve
(11)Reverse Gear Bearing
(12)Reverse Gear Spacer
(13)Reverse Gear Retaining Ring
(14)1st/Reverse Gear Clutch Hub
(15)1st Gear Bearing
(16)1st Speed Gear
(17)Mainshaft
(18)Thrust Washer Retaining Pin
(19)Retainer Ring
(19)Retainer Ring
(19)Retainer Ring
(19)Retainer Ring
(20)1st Gear Outer Synchronizer Ring
(21)Middle Synchronizer Ring
(21)Middle Synchronizer Ring
(22)Inner Blocker Synchronizer Ring
(22)Inner Blocker Synchronizer Ring
(23)1st/2nd Gear Synchronizer Hub
(24)1st/2nd Gear Synchronizer Insert
(25)Synchronizer Spring
(26)1st/2nd Synchronizer Sleeve
(27)2nd Gear Outer Synchronizer Ring
(28)2nd Speed Gear
(29)2nd Speed Gear Bearing
(30)3rd Gear Thrust Washer
(31)3rd Gear Retaining Ring
(32)Mainshaft Gear Bearing Spacer
(33)Mainshaft 3rd Speed Gear
(34)3rd Speed Gear Bearing
(35)3rd Gear Blocking Ring
(36)3rd/4th Gear Synchronizer Hub
(37)3rd/4th Gear Synchronizer Spring
(38)3rd/4th Gear Synchronizer Insert
(39)3rd/4th Gear Synchronizer Sleeve
(40)3rd Gear Blocking Ring
(41)Drive Gear Clutch Gear
(42)Drive Gear Bearing
(43)Main Drive Gear Bearing
(44)Main Drive Gear
(45)Input Shaft Bearing Cone
Figure 3:

Shift Cover


Object Number: 789367  Size: LF
(1)Shift Bar Housing Expansion Plug
(2)Backup Lamp Switch
(3)Backup Lamp Switch Gasket
(4)Shift Tower Spacer
(5)Shift Lever
(6)Shift Lever Bolt
(7)Shift Lever Bushing
(8)Cup Interlock Expansion Plug
(9)Cover to Case Bolt
(10)Cover Pin
(11)Shift Lever Cover
(12)Vent Pipe
(13)Shift Fork Interlock Pin
(14)3rd and 4th Shift Fork
(15)Shift Interlock Plunger
(16)Shift Rod Interlock Pin
(17)1st and 2nd Shift Shaft
(18)3rd and 4th Shift Shaft
(19)1st and 2nd Shift Fork
(20)1st and 2nd Shift Lug
(21)3rd and 4th Shift Lug
(22)Shift Fork Pad
(23)Reverse and Overdrive Fork
(24)Shift Fork Interlock Pin
(25)Overdrive Lug
(26)Shift Fork Interlock Pin
(27)Overdrive and Reverse Shift Shaft
(28)Shift Fork and Bar Poppet Plunger
(29)Shift Rod Poppet Ball Spring
Figure 4:

Transmission Extension


Object Number: 789368  Size: MF
(1)Transmission Bolt
(2)Transmission Extension
(3)Transmission Case Lock Pin
(4)Vehicle Speed Sensor
(5)Transmission Extension
(6)Transmission Case Lock Pin
(7)Transmission Bolt
(8)Rear Output Shaft Rear Bearing
(9)Mainshaft Rear Bearing Retainer Ring
(10)Mainshaft Seal
(11)Propeller Shaft Yoke
(12)Rubber Washer
(13)Mainshaft Nut Washer
(14)Mainshaft Nut
(15)Speed Sensor Bolt
(16)Speed Sensor
(17)Transmission Case Lock Pin
(18)Transmission Extension
(19)Transmission Bolt
(20)Rear Output Shaft Rear Bearing
(21)Mainshaft Rear Bearing Retainer Ring
(22)Mainshaft Seal