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 DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONSMAIN BEARING CAP TORQUE
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Main Bearing Cap Torque
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Main Bearing Cap Torque
| Engine Block Left Side Oil Gallery Plug | 15 Foot Pound-Force (ft.lb) | ||
| Engine Block Left Rear Oil Gallery Plug | 22 Foot Pound-Force (ft.lb) | ||
| Engine Block Right Rear Oil Gallery Plug | 15 Foot Pound-Force (ft.lb) | ||
| Engine Block Oil Gallery Plug | 15 Foot Pound-Force (ft.lb) | ||
| Oil Pan Alignment at Rear of Engine Block (Maximum) | 0.011 Inch (in) | ||
| Cylinder Bore | Diameter | 4.0007 - 4.0017 Inch (in) | |
| Out-of-Round (Production) (Maximum) | 0.00050 Inch (in) | ||
| Out-of-Round (Service) (Maximum) | 0.002 Inch (in) | ||
| Taper (Production Relief Side) (Maximum) | 0.0010 Inch (in) | ||
| Taper (Production Thrust Side) (Maximum) | 0.0005 Inch (in) | ||
| Taper (Service) (Maximum) | 0.0010 Inch (in) | ||
| Crankshaft Bearing Cap Bolt | Preferred Method | First Pass | 15 Foot Pound-Force (ft.lb) |
| Final Pass | 73deg | ||
| Optional Strategy | 77 Foot Pound-Force (ft.lb) |
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.