Oil Pressure Switch
WARNING: This page is about a different variant/trim than selected.
The oil pressure switch is located in a threaded port in the bank 2 cylinder head. The switch is connected directly to the Body Control Module/Gateway Module (BCM/GWM) assembly.
The switch is not connected to the Powertrain Control module (PCM) but is supplied with a reference voltage from the BCM/GWM. The switch ground is through the switch body and the engine. When the oil pressure falls to below a predetermined threshold, the switch contacts close, completing a circuit from the BCM/GWM. This circuit is sensed by the BCM/GWM which displays and appropriate warning message and warning lamp to alert the driver.