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Installation Procedure

WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Add refrigerant oil to the evaporator core. Refer to Refrigerant System Capacities .
  2. Install the new evaporator core seals to evaporator.
    3. Fig 1: View Of Evaporator Core Thermistor
    GM802751Courtesy of GENERAL MOTORS CORP.
  3. Install the evaporator sensor and harness to the evaporator.
    4. Fig 2: View Of Evaporator Core
    GM1378986Courtesy of GENERAL MOTORS CORP.
  4. Install the evaporator core.
    5. Fig 3: View of Separating HVAC Module
    GM1378984Courtesy of GENERAL MOTORS CORP.
  5. Connect the HVAC module case halves together.
    6. Fig 4: View Of HVAC Module Wiring Harness & Evaporator Core Temperature Sensor Connector
    GM1379003Courtesy of GENERAL MOTORS CORP.
  6. Reposition and connect the HVAC Module wiring harness (1).
    7. Fig 5: View Of HVAC Module Retainer Clips
    GM1379007Courtesy of GENERAL MOTORS CORP.
  7. Install the HVAC module retainer clips.
    8. Fig 6: View Of HVAC Module Case Screws
    GM1379002Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  8. Install the HVAC module case screws and tighten to 1 N.m (9 lb in).
  9. Install the right side air temperature actuator and linkage. Refer to Temperature Valve Actuator Replacement - Right Side .
  10. Install the heater core. Refer to Heater Core Replacement .
  11. Reconnect all associated wiring connections attached to the HVAC module.
  12. Install the HVAC module. Refer to HVAC Module Assembly Replacement .
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