How to Replace a Heater Core on Chevrolet Astro?

The engine coolant must be drained before starting heater core replacement work. The first step requires removal of heater hoses followed by unfastening of screws holding the cover to the heater case assembly. The heater core replacement begins with taking off the straps which keep the heater core positioned before removing the component from the car. Position the heater core in the vehicle and use straps to maintain it. Securely tighten the screws which hold the heater core to the heater case assembly at 2 N.m (18 lb in). The cooling system completion happens after reinstalling the heater hoses followed by refilling the system.

OEM Chevrolet Astro Heater Core

HVAC Heater Core

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3 Heater Cores found

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Chevrolet Astro Heater Core Part Number: 89018963
Product Specifications
- Other Name: Core Assembly, Auxiliary Heater; Auxiliary Heater Core; Core, Heater Core
- Replaces: 52470518
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-2005 Chevrolet Astro | Base, CL, CS, LS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Heater Core Part Number: 52474642
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core, Heater Core
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Heater Core Part Number: 52470155
Product Specifications
- Other Name: Core, Heater; Core, Heater Core
- Replaces: 52462734
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1995 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS

Chevrolet Astro Heater Core

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Being one of Chevrolet Astro's essential parts, their Heater Core is primarily responsible for heating the interior of the vehicle through the help of excessive heat produced by the engine. Such as the small car radiator, the core is cooled via a water and antifreeze mixture, with hot coolant from the car's engine running through it for the sole purpose of warming the cabin air. These could be valves or doors for the setting changes and, in conditioned automobiles, the heater core also helps in dehumidifying. Problems like clogging and leakages are usually experienced, and the work of undertaking a repair could be very rigorous because the core lies right behind the dashboard. More to that, air-cooled engine have alternatives that can be used in heating but they entail more dangers.

Chevrolet Astro Heater Core Parts and Q&A

Heater Core
52474642
Q: How to Replace a Heater Core on Chevrolet Astro?
A:
The engine coolant must be drained before starting heater core replacement work. The first step requires removal of heater hoses followed by unfastening of screws holding the cover to the heater case assembly. The heater core replacement begins with taking off the straps which keep the heater core positioned before removing the component from the car. Position the heater core in the vehicle and use straps to maintain it. Securely tighten the screws which hold the heater core to the heater case assembly at 2 N.m (18 lb in). The cooling system completion happens after reinstalling the heater hoses followed by refilling the system.