How to Replace Oil Pressure Switch 1999-2007 Chevy Silverado

To get to this OP switch, you don't necessarily need to remove anything on the top of the engine such as the cover or the intake. It might make it a little bit easier to be able to access the OP switch, but it is, of course, a lot more work overall.

So we took the intake out of the way so you can see where we're working. We need to get this wiring harness off there. So just grab this tab, lift it right up. Then you can use a nice long extension in your OP or Oil Pressure switch socket, looks a lot like this. That would just slide right down over it. It should fit in well with, of course, your extension and everything. There it is friends.

Now, it's gonna be time to get our new OP switch in here. Make sure you use a little bit of thread sealant on it. That's gonna be very important. I always start things in by hand. Okay? Now, I'm just gonna bottom this out, and then we'll torque it to manufacturer specifications, which is 26 foot-pounds. Go ahead and grab that wiring harness, slide it right down on there, lock it in, give it a tug.

Okay, so once you got it in there, it's nice and tight. You re-plugged it in. The next thing I would wanna do is double check that oil level. Not that you'd probably lose any oil doing this job, but it couldn't hurt to check the oil level. Once you've done that, go ahead and take it for a road test.