Where is the thermostat located on a 1996 Dodge Ram 1500 Extended Cab pickup truck?

The thermostat on a 1996 Dodge Ram 1500 Extended Cab is located under the intake manifold. This is not an easily accessible location and requires removing various components to reach it. You'll likely need a repair manual specific to your truck's engine (e.g., 3.9L, 5.2L, 5.9L) to guide you through the process.