F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Heater Air Plenum Chamber: Service and Repair
REMOVAL
NOTE: Some applications might have screws in place of nuts.
1. Disconnect battery ground cable.
2. In passenger compartment, remove nut from the bottom of heater air plenum chamber just to the right of heater core cover.
3. In engine compartment, remove electrical connector from blower motor by pushing on connector tab and pulling connector off blower motor.
Remove connector from heater blower motor switch resistor.
4. Remove bolt from heater plenum chamber case (upper right side of engine compartment).
5. Remove three retaining nuts from the heater plenum chamber case.
6. Pull the heater plenum chamber case away from the dash panel.
INSTALLATION
1. Follow removal procedure in reverse order.
NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control
Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.
