I would just like to advise people who are planning on replacing their Oil Pressure Sending Units to not purchase the OEM unit from the dealership. I bought and installed mine last summer. I have currently put on roughly 3000km and my sender juts failed this weekend.....or my car likes running at 80psi all the time. I have heard from other people who have purchased their units from GM that they fail quite quickly. I noticed the sending unit from Part Source has a brass body as opposed to the original units aluminum body. As much as I try to not put stuff from Part Source or Canadian Tire into my car, it has been argued that the brass bodied units are much more robust and less prone to failing than the aluminum ones.