GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2009
🢒
STS
🢒
HVAC
🢒
HVAC - Automatic
🢒 Air Conditioning Refrigerant Temperature Sensor Replacement
Removal Procedure
Remove the HVAC module. Refer to
HVAC Module Assembly Replacement
.
Disconnect all associated wiring connections attached to the HVAC module.
Remove heater core. Refer to
Heater Core Replacement
.
Remove the right side air temperature actuator and linkage. Refer to
Temperature Valve Actuator Replacement - Right Side
.
Remove the HVAC module case screws.
Remove the HVAC module retainer clips.
Separate the HVAC module case.
Reposition the evaporator core to access the evaporator sensor.
Remove the evaporator sensor and harness from the evaporator core.
Installation Procedure
Add refrigerant oil to the evaporator core. Refer to
Refrigerant System Capacities
.
Install the new evaporator core seals to evaporator.
Install the evaporator sensor and harness to the evaporator.
Install the evaporator core.
Connect the HVAC module case halves together.
Reposition and connect the HVAC Module wiring harness (1).
Install the HVAC module retainer clips.
Caution:
Refer to
Fastener Caution
in the Preface section.
Install the HVAC module case screws and tighten to
1 N·m (9 lb in)
.
Install the right side air temperature actuator and linkage. Refer to
Temperature Valve Actuator Replacement - Right Side
.
Install the heater core. Refer to
Heater Core Replacement
.
Reconnect all associated wiring connections attached to the HVAC module.
Install the HVAC module. Refer to
HVAC Module Assembly Replacement
.