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 MANUALSCHEVROLET2002EXPRESS 3/4 TON VAN V8-6.5L DSL TURBO VIN FREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAULREPAIR INSTRUCTIONS18. PUMP ASSEMBLY REMOVAL
2002 Chevrolet Express 3/4 Ton Van V8-6.5L DSL Turbo VIN F
18. Pump Assembly Removal
2002 Chevrolet Express 3/4 Ton Van V8-6.5L DSL Turbo VIN FSECTION 18. Pump Assembly Removal
^ Tools Required
- J 23129 Universal Seal Remover
- J 6125- 1B Slide Hammer
- J 37789-A Oil Pump Remover/Installer
1. Remove the turbine shaft front oil seal ring (2).
2. Remove the torque converter oil seal assembly (201) using the J 23129 and the J 6125-1B.
3. Remove the seven oil pump bolt and seal assemblies (3).
4. Attach the J 37789-A to the oil pump shaft.
Tighten the thumb screw.
5. Turn the handle of the J 37789-A down onto the turbine shaft in order to raise the oil pump assembly (4) out of the case.
6. Remove the oil pump assembly (4).
7. Remove the J 37789-A.
8. Remove the transmission oil pump gasket (6).
Important: The selective thrust washer (218) may be stuck to the pump cover.
9. Remove the selective thrust washer (218).
- J 23129 Universal Seal Remover
- J 6125- 1B Slide Hammer
- J 37789-A Oil Pump Remover/Installer
1. Remove the turbine shaft front oil seal ring (2).
2. Remove the torque converter oil seal assembly (201) using the J 23129 and the J 6125-1B.
3. Remove the seven oil pump bolt and seal assemblies (3).
4. Attach the J 37789-A to the oil pump shaft.
Tighten the thumb screw.
5. Turn the handle of the J 37789-A down onto the turbine shaft in order to raise the oil pump assembly (4) out of the case.
6. Remove the oil pump assembly (4).
7. Remove the J 37789-A.
8. Remove the transmission oil pump gasket (6).
Important: The selective thrust washer (218) may be stuck to the pump cover.
9. Remove the selective thrust washer (218).
RENDER: 1.0x
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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.