GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1998 🢒 Isuzu MD Steel Tilt (F Model) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Heater/Vent Module Replacement

Removal Procedure
  1. Remove the instrument panel. Refer to Instrument Panel Carrier Replacement in Instrument Panel and Gauges.
  2. Remove the right heater core. Refer to Heater Core Replacement .
  3. Remove the A/C Tempature Sensor connectors screw.
  4. Remove the left heater core. Refer to Heater Core Replacement .
  5. Disconnect the A/C Tempature Sensor connectors electrical connectors.
  6. Remove the A/C Tempature Sensor connectors.
  7. Remove the air conditioning evaporator. Refer to Air Conditioning Evaporator Core Replacement .
  8. Disconnect the blower motor resistor electrical connectors.
  9. Disconnect the blower motor electrical connectors.
  10. Remove the heater vent module nuts.

    11. Object Number: 229927 Size: SH
  11. Remove the right heater vent module.

    12. Object Number: 229929 Size: SH
  12. Remove the left heater vent module.

Installation Procedure

    Object Number: 229929 Size: SH
  1. Install the left heater vent module.

    2. Object Number: 229927 Size: SH
  2. Install the right heater vent module.
  3. Install the heater vent module nuts.
  4. Install the blower motor electrical connectors.
  5. Install the blower motor resistor electrical connectors.
  6. Install the air conditioning evaporator. Refer to Air Conditioning Evaporator Core Replacement .
  7. Install the A/C Tempature Sensor connectors.
  8. Connect the A/C Tempature Sensor connectors electrical connectors.
  9. Install the A/C Tempature Sensor connectors screw.
  10. Install the heater cores. Refer to Heater Core Replacement .
  11. Install the instrument panel. Refer to Instrument Panel Carrier Replacement in Instrument Panel and Gauges.