Heater Core Replacement for Cadillac CTS 2009

1. Remove the HVAC module. Refer to HVAC Module Assembly Replacement.
2. Remove the heater hose bracket screw.



3. Remove the heater hose bracket (1).



4. Slide the heater core out of the HVAC module.

1. Slide the heater core into the HVAC module.



2. Install the heater hose bracket (1).

Caution: Refer to Fastener Caution in the Preface section.

3. Install the heater hose bracket screw and tighten to 1 N·m (9 lb in).
4. Install the HVAC module. Refer to HVAC Module Assembly Replacement.