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 MANUALSCHEVROLET1997ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSHEATER CORE
1997 Chevrolet Astro Van 2WD V6-4.3L VIN W
Heater Core
1997 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Heater Core
Inlet/Outlet Front Pipe Assembly Clip to Frame Bolts 3.4 N.M (30 lb in)
Heater Assembly to Blower Assembly Bolts 6 N.m (53 lb in)
Heater Assembly to Blower Assembly nuts 7.5 N.m (66 lb in)
Heater Outlet & Inlet Hose Clip to Heater Assembly 4 N.m (35 lb in)
Heater Assembly to Blower Assembly Bolts 6 N.m (53 lb in)
Heater Assembly to Blower Assembly nuts 7.5 N.m (66 lb in)
Heater Outlet & Inlet Hose Clip to Heater Assembly 4 N.m (35 lb in)
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.