How do you change an air filter on a 1986 GMC Vandura 1500?

To change the air filter on a 1986 GMC Vandura 1500, start by locating the air cleaner assembly, which is typically on top of the engine. Remove the screws or clips securing the air cleaner cover and lift it off. Take out the old air filter, ensuring to clean any debris from the housing, then insert the new filter, making sure it fits snugly. Finally, reattach the air cleaner cover and secure it with the screws or clips.