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Installation Procedure

WARNING: This page is about a different car, the 2010 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 Specifications .
  2. Install the new evaporator core seals to evaporator.
    3. Fig 1: Evaporator Sensor
    GM802751Courtesy of GENERAL MOTORS CORP.
  3. Install the evaporator sensor and harness to the evaporator.
    4. Fig 2: Evaporator Core
    GM1378986Courtesy of GENERAL MOTORS CORP.
  4. Install the evaporator core.
    5. Fig 3: HVAC Module Case
    GM1378984Courtesy of GENERAL MOTORS CORP.
  5. Connect the HVAC module case halves together.
    6. Fig 4: HVAC Module Wiring Harness
    GM1379003Courtesy of GENERAL MOTORS CORP.
  6. Reposition and connect the HVAC Module wiring harness (1).
    7. Fig 5: HVAC Module Retainer Clips
    GM1379007Courtesy of GENERAL MOTORS CORP.
  7. Install the HVAC module retainer clips.
    8. Fig 6: 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 Air Conditioning and Heater Module Assembly Removal and Installation .
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