Where is the daytime running lights module on a 1997 Chevrolet S-10 pickup truck?

A 1997 Chevrolet S-10 did not have daytime running lights (DRLs) as a standard factory feature. The DRL system wasn't mandated in the US until 1986, but even then, its implementation varied widely by manufacturer and model. The S-10 likely didn't have them integrated into the vehicle's electrical system. Any DRL functionality you see on a 1997 S-10 would be an aftermarket addition. Therefore, there's no factory-installed "daytime running lights module" to locate.