There isn't a dedicated "Daytime Running Light (DRL) control module" in the same way some later vehicles have. In a 2000 Pontiac Montana, the DRL function is typically integrated into the Body Control Module (BCM). The BCM is the central computer that controls many of the vehicle's electrical systems.
Therefore, you won't find a separate DRL module. Any troubleshooting or repairs related to the DRLs would involve inspecting the BCM, wiring harnesses, and potentially the headlight switch itself. A scan tool capable of communicating with the BCM is usually needed to diagnose DRL problems.
