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 MANUALSCHEVROLET1999EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISDIAGRAMSEXPLODED VIEWSAUTOMATIC TRANSMISSION/TRANSAXLE
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Automatic Transmission/Transaxle
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Automatic Transmission/Transaxle
Component Locator View
Electronic Component Locations
Case and Associated Parts (1 of 2)
Case and Associated Parts (2 of 2)
Oil Pump Assembly
Control Valve Body Assembly (1 of 2)
Control Valve Body Assembly (2 of 2)
Internal Parts (11 of 2)
Internal Parts (2 of 2)
Parking Lock and Manual Shift Shaft Assembly
Seal Locations
Bearings and Bushings
Torque Converter Housing Identification
Case Extension Identification
Valve Trains
Pump Body Fluid Passages (Pump Cover Side)
Pump Cover Fluid Passages (Pump Body Side)
Pump Cover Fluid Passages (Case Side)
Case Fluid Passages (Pump Cover Side)
Case Fluid Passages (Control Valve Body Side)
Spacer Plate to Case Gasket
Spacer Plate Fluid Passages
Spacer Plate to Control Valve Body Gasket
Control Valve Body Fluid Passages (Case Side)
2-4 Servo Fluid Passages
1-2 Accumulator Cover Fluid Passages
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.