OEM 2009 Cadillac CTS Thermostat

2009 Cadillac CTS Thermostat Parts and Q&A

• Q: How to replace the engine coolant thermostat on 2009 Cadillac CTS?

  A: Start the Thermostat replacement task by partially draining the cooling system through the cooling system draining and filling (GE 47716) procedure. Follow the documented Intake Manifold replacement (SFI) instructions to remove the upper Intake Manifold. At first disconnect the surge tank outlet pipe from the Thermostat then take out the coolant pipe/Thermostat housing bolt and the upper coolant pipe bolt . Disconnect the coolant inlet pipe from the Thermostat before unfastening the Thermostat bolts . Afterward remove the Thermostat by discarding the Thermostat seal . Install the new Thermostat with a new Thermostat seal by following the 10 nm (89 lb in) torque recommendations when tightening the Thermostat bolts. The coolant pipe installation requires new sealing material and fasteners (2 and 7). Additionally the surge tank outlet pipe needs to connect to the Thermostat. Reinstall the upper Intake Manifold after performing cooling system filling through the cooling system draining and filling (GE 47716) standard.