Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003EXPRESS 1/2 TON VAN V6-4.3L VIN XREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAUL4L60-E/4L65-E AUTOMATIC TRANSMISSIONREPAIR INSTRUCTIONS41. INPUT CLUTCH ASSEMBLY DISASSEMBLE
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN X
41. Input Clutch Assembly Disassemble
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN XSECTION 41. Input Clutch Assembly Disassemble
Removal Procedure
^ Tools Required
- J 23327-1 Clutch Spring Compressor
- J 23456 Clutch Spring Compressor Press
- J 25018-A Clutch Spring Compressor Adapter
1. Remove the reverse input clutch housing and drum assembly (605) from the input clutch assembly (621).
2. Remove the stator shaft/selective washer bearing assembly (615).
3. Remove the selective thrust washer (616).
4. Remove the 3rd and 4th clutch backing plate retainer ring (656).
Notice: The 3rd and 4th clutch plate stack is different for 2.21L models.
5. Remove all 3rd and 4th clutch plates (653-655).
6. Remove the 3-4 clutch boost spring assemblies (600).
7. Remove the forward clutch backing plate retainer ring (651).
8. Remove the forward clutch selective backing plate (650).
9. Remove the forward clutch sprag assembly.
10. Remove all forward clutch plates (646, 648, 649A,649B).
11. Remove the input sun gear bearing assembly (637).
12. Remove the input housing to output shaft seal (636).
13. Remove all overrun clutch plates (645A, 645B).
14. Install the J 23327-1 and the J 25018-A.
15. Compress the overrun clutch spring, using the J 23456.
16. Remove the overrun clutch spring retainer snap ring (635).
17. Remove the J 23327-1 and the J 25018-A.
18. Remove the overrun clutch spring assembly (634).
19. Remove the overrun clutch piston (632).
20. Remove the forward clutch piston (630).
21. Remove the forward clutch housing (628).
22. Remove the 3rd and 4th clutch spring assembly (626).
23. Remove the 3rd and 4th clutch apply ring (625).
24. Remove the 3rd and 4th clutch piston (623).
^ Tools Required
- J 23327-1 Clutch Spring Compressor
- J 23456 Clutch Spring Compressor Press
- J 25018-A Clutch Spring Compressor Adapter
1. Remove the reverse input clutch housing and drum assembly (605) from the input clutch assembly (621).
2. Remove the stator shaft/selective washer bearing assembly (615).
3. Remove the selective thrust washer (616).
4. Remove the 3rd and 4th clutch backing plate retainer ring (656).
Notice: The 3rd and 4th clutch plate stack is different for 2.21L models.
5. Remove all 3rd and 4th clutch plates (653-655).
6. Remove the 3-4 clutch boost spring assemblies (600).
7. Remove the forward clutch backing plate retainer ring (651).
8. Remove the forward clutch selective backing plate (650).
9. Remove the forward clutch sprag assembly.
10. Remove all forward clutch plates (646, 648, 649A,649B).
11. Remove the input sun gear bearing assembly (637).
12. Remove the input housing to output shaft seal (636).
13. Remove all overrun clutch plates (645A, 645B).
14. Install the J 23327-1 and the J 25018-A.
15. Compress the overrun clutch spring, using the J 23456.
16. Remove the overrun clutch spring retainer snap ring (635).
17. Remove the J 23327-1 and the J 25018-A.
18. Remove the overrun clutch spring assembly (634).
19. Remove the overrun clutch piston (632).
20. Remove the forward clutch piston (630).
21. Remove the forward clutch housing (628).
22. Remove the 3rd and 4th clutch spring assembly (626).
23. Remove the 3rd and 4th clutch apply ring (625).
24. Remove the 3rd and 4th clutch piston (623).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.