Wednesday, January 22, 2014
How to Install the Heater Core on a 1992 Chevy S10 Blazer
If you have allowed your Chevy Blazer time to warm up but still do not feel any heat in the passenger compartment there is a good chance that you have a faulty heater core. Because the heater core is located against the firewall, many mechanics charge quite a bit of labor for this repair. If you want to save the majority of the repair estimate, this is a job that you can complete yourself in about an hour.
Instructions
- 1
Disconnect the battery cable from the negative terminal on your Blazers battery. You need to do this any time you are completing a repair on your vehicle to reduce the chance of receiving an electrical shock.
2Place a bucket under the radiator and drain the coolant from the cooling system. Typically, the drain plug is located at the bottom center of the radiator.
3Remove the coolant hoses leading from the heater core to the engine. These are on the engine compartment side of the heater core. Plug the tubes of the heater core with a shop rag to reduce the chances of spilling coolant inside the vehicle when you remove the heater core.
4Remove the heater core case located inside the passenger compartment. This case is located under the dashboard, just to the right of center of the vehicle. To do this, turn the screws connecting the heater core cover to the cowl counterclockwise and remove them.
5Remove the support brackets from the heater core and remove the core from the passenger compartment side of the firewall.
6Install the new heater core into the firewall. Be caul when you insert the tubes through the firewall so you dont bend them.
7Install the support brackets and the heater core cover. Replace all of the retaining screws and turn them clockwise to secure.
8Connect all hoses leading from the engine to the heater core inside the engine comparment, fill the radiator with coolant and reconnect the negative battery terminal.
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