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Chevy Blazer
Heater Cores and Blower Fans
Chevy Blazer S-10

How do you replace a heating core on a 1999 S10 Blazer?

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Wiki User
2015-07-15 21:32:27
2015-07-15 21:32:27

Not an easy job. Get a manual on your car to do the job right the first time.

you have to take the dash apart its in the dash on the passenger side behind the glove box but if u have dual airbags it would be best for a shop to do it

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Depends where you live but I would guesstimate between $400 and $800.

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Most newer model cars the only way to replace a heater core is to completely remove the dash to access the heating system ducts as well as the core.

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Underneath the dash on the passenger side. Open the hood and you will see the hoses entering the firewall where the core is located.

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Hard to repair. Best is to replace it with a new one. Have to remove the core from the inside of the car.

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The dash has to be removed to gain access to the heater box. The heater box then comes out and is split open to replace the core.

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Tough question without knowing what the vehicle is. help us to help you

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your heater core is going out, you need to replace it before it ruptures.

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They did'NT make the Trailblazer in 2000 might you be looking for information for a 2000 Blazer.

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This can be done, though some modifications may be needed. If you need to replace your core support (rad support) as well, order a core support for a 91 S10 blazer. This will help do away with the mounting issues. I did this to a 1985 S10 blazer and the grill fit fine with the factory core support, but not all of the mounting locations matched.

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To replace the heater core in a 1999 Opel Astra, remove the center console and remove the 6 5.5 mm bolts. Also remove the clips and remove the cover and plastic clips on each pipe. Finally, lift the heater core and replace with new.

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You have to take out the whole heater and air condiasioning system out and replace the new heater core in. When you replace the heater core, you firset have to put the air condiasoning system in then the heating system/ heater core. When you take the old systems out, you first have to take out the A.C then the heater.

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Behind the dashboard on the passenger side. The whole dash has to come out to replace it.

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that model is acually located under the hood on the fire wall on pass side..


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