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 SPECIFICATIONSENGINESYSTEM SPECIFICATIONSGENERAL SPECIFICATIONSGENERAL ENGINE SPECIFICATIONS
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
General Engine Specifications
1999 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION General Engine Specifications
| Engine Wiring Harness Bracket Nut to Intake Manifold | 106 | |
| Engine Wiring Harness Retainer Nut to Transmission to Engine Stud | 88 | |
| General Data | Engine Type | V6 |
| Regular Production Option (RPO) Code LF6 VIN Code X, and RPO Code L35 VIN Code W | ||
| Displacement | 4.3 | |
| Bore | 4.012 | |
| Stroke | 3.480 | |
| Compression Ratio | 9.2 | |
| Firing Order | 1-6-5-4-3-2 | |
| Engine Lift Bracket Bolt (Special Tool J 41427) | 11 | |
| Engine Lift Front Bracket Stud | 26 |
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.