Q: How to replace the engine coolant thermostat on 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.
Q: How to replace the engine coolant thermostat (LY7) on Cadillac SRX?
A: Your first step when replacing the engine coolant Thermostat (LY7) should include partial draining of the cooling system. Proper maintenance requires that engine intake manifolds stay connected during the work. The required procedure requires removing both the upper Intake Manifold while also removing the lower Intake Manifold. Workers need to disconnect the surge tank hose from the Thermostat before removing the coolant pipe/Thermostat housing bolt and the coolant pipe upper bolt. The coolant inlet pipe needs to be disconnected from the Thermostat before the Thermostat bolts get removed. Remove the Thermostat from its position then dispose of the old Thermostat seal. To install the new Thermostat keep it together with a new Thermostat seal while using the correct fasteners at their proper locations otherwise damage may happen. Install the bolts on the Thermostat at 10 nm torque setting (89 lb in). Install the coolant pipe back in place using its new seal and fasteners (2 and 7), followed by reattaching the surge tank hose to the Thermostat. Place the upper Intake Manifold with the lower Intake Manifold while filling the cooling system.
Q: How to replace the engine coolant thermostat (LC3) on Cadillac XLR?
A: Replacing an engine coolant Thermostat (LC3) requires initial draining of the cooling system through the cooling system draining and filling (GE 47716). Start by uninstalling the air cleaner assembly followed by disconnecting the Radiator Hose from the Thermostat Housing then separating the heater hose from the Thermostat Housing. Use a socket wrench to remove the Thermostat Housing bolts so you can pull away the Thermostat Housing unit with its incorporated Thermostat from the water housing. First remove the Thermostat while throwing away its seal ring then take it out of the Thermostat Housing. Expertly clean the surfaces on both the Thermostat Housing and water housing before placing the Thermostat into its housing then adding a new seal onto the Thermostat Housing. Tighten the Thermostat Housing bolts to 89 lb in by using a torque wrench when setting the Thermostat Housing in place with both the Thermostat and seal . Restore connection between the heater hose and Radiator Hose to the Thermostat Housing before reinstalling the air cleaner assembly. According to the cooling system draining and filling (GE 47716) procedure, complete the cooling system filling process.