CTS V6-32L 2003 Heater Core TSB: Page 8905
Heater Core: Service and Repair
HEATER CORE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the HVAC module. See: Housing Assembly HVAC/Service and Repair
2. Remove the heater hose bracket screw.
3. Remove the heater hose bracket (1).
4. Slide the heater core out of the HVAC module.
INSTALLATION PROCEDURE
1. Slide the heater core into the HVAC module.