The oil pressure sensor on the 2007 Chevy Avalanche is situated in the top back of the admission complex,in the engine of the vehicle. The oil pressure sensor expects the job of checking this inside tension and conveying a message to the oil pressure measure on Your scramble,cautioning You right away in the event that there is an issue. This gives the driver time to pull over and survey the issue before exorbitant fixes become necessary.If Your oil pressure cautioning light comes on,focus on it! Any opportunity this light comes on,regardless of whether You realize Your sensor is terrible as of now,You really want to look at it. In the event that the dipstick peruses that the oil level is fine and the motor sounds like its running unobtrusively and easily,then,at that point,the light is presumably only the consequence of a terrible sensor.