Cutlass Ciera Cruiser V6-3100 3.1L MFI VIN M (1994)

Heater Core: Service and Repair
With Air Conditioning
1. Drain cooling system.
2. Disconnect heater inlet and outlet hoses.
3. Remove lower instrument panel sound insulator, then heater floor outlet duct.
4. Remove heater core cover screws and clips securing cover to air valve housing, then heater core cover.
5. Remove heater core retaining straps, then heater core.
6. Reverse procedure to install.