These are all controlled via the Body Control Module. This type of vehicle has some of this operation built into the engine computer too. The relays carbon-up &/or go dry-jointed inside of the BCM's. They need a re-work and relay contacts all need cleaning, which you can do yourself by pinching a non-glossy business card between the relay contacts and sliding it out until the black carbon trace disappears. De-solder, clean, flux, re-solder dry joints on relays and connectors. I've personally done hundreds over many years.