Cooling System: LS
- On 3.9L engine, open engine coolant fill cap.
- On 3.0L engine, open air bleed located in upper radiator hose inlet pipe.
- On all engines, open heater air bleed located in left rear corner of engine compartment. Add coolant to degas bottle until no more coolant can be added.
- On 3.0L close air bleed on upper radiator hose inlet when coolant begins to escape.
- On all engines, install degas bottle cap.
- On 3.9L engine, add as much coolant as possible to the engine fill. The heater air bleed will remain open. Install engine coolant fill cap.
- On all engines, start engine and set heater controls to MAX heat position. Close heater air bleed when a steady stream of coolant comes from bleed during idle. Allow engine to idle for 5 minutes. Add coolant as necessary to maintain cold fill MAX mark on degas bottle.
- Reopen the heater air bleed to release any entrapped air and close again.
- Increase engine speed to 2000 RPM on 3.9L engine, or 1500 RPM on 3.0L engine. Hold for 3-5 minutes, or until hot air comes from heater. Allow engine to idle. Recheck to ensure hot air is still coming from heater. Set temperature control to 75°F (24°C) and allow engine to idle for 2 minutes. Shut engine off, and allow to cool.
- After engine has cooled, add coolant to degas bottle as necessary to bring level to cold fill MAX mark.