Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Heater Core: Service and Repair

1. Disconnect battery ground cable.
2. Drain cooling system.
3. Disconnect heater hoses from heater core.
4. Remove righthand and lefthand sound insulators.
5. Remove heater core cover from heater and A/C module.
6. Remove heater core retaining straps.
7. Remove heater core from vehicle.
8. Reverse procedure to install. To aid installation the sound insulator seal may be cut in half. Each half should be placed into the respective sides of the heater and A/C module.