K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
REMOVE OR DISCONNECT
1. Battery ground cable.
2. Coolant from the radiator.
3. Refrigerant from the system.
4. Coolant overflow tank.
5. Heater hoses from the coil tubes.
6. Refrigerant inlet and discharge lines from the evaporator.
7. Electrical connection to the temperature actuator.
8. Heater case bottom plate.
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Remove the seven screws that hold the bottom cover.
9. Heater core.
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Remove the screws and brackets that hold the core to the case.
10. Evaporator core cover.
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Remove the four screws that hold the cover to the evaporator case.
11. Evaporator core.
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Pull the core out and down from the evaporator case.
