Hello & Welcome to JA,
I am sending info on the replacement of the thermostat for your vehicle.Two different engines.
Engine Coolant Thermostat Replacement (RPO L61)
Important: Lubricate the O-ring with soapy water or coolant before installing the O-ring in the water pump.
Tighten Tighten the bolt to 10 N·m (18 lb in).
I will opt out so another expert can help you.have a good evening.