B4000 2WD V6-4.0L OHV (1994)
Heater Core: Service and Repair
REMOVAL AND INSTALLATION
1. Disconnect battery ground cable.
2. Drain cooling system.
3. Disconnect hoses from heater core. Plug hoses and core openings to prevent leakage of residual coolant.
4. In passenger compartment, remove instrument panel.
Fig. 13 Heater Air Plenum Chamber Removal
5. Remove heater air plenum chamber, Fig. 13.
6. Remove heater core from heater air plenum chamber.
7. Reverse procedure to install.