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 MANUALSCHEVROLET1998ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSHEATER CORE
1998 Chevrolet Astro Van 2WD V6-4.3L VIN W
Heater Core
1998 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Heater Core
| Auxiliary Heater Inlet/Outlet Front Pipe Assembly Clip To Frame Bolt | 30 Inch Pound-Force (in.lb) |
| Auxiliary Heater Module To Floor Bolts | 44 Inch Pound-Force (in.lb) |
| Heater Assembly To Blower Assembly Bolts | 53 Inch Pound-Force (in.lb) |
| Heater Assembly To Blower Assembly Nuts | 66 Inch Pound-Force (in.lb) |
| Heater Inlet/Outlet Hose Clip To Heater Assembly | 35 Inch Pound-Force (in.lb) |
| Hot Water Bypass Valves To Blower Assembly Bolts | 35 Inch Pound-Force (in.lb) |
| Vent Valve Assembly To Cowl Side Panel Bolts | 35 Inch Pound-Force (in.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.