[P.j.]

Question: I have a 2008 Silverado 5.3. Oil pressure switch has died for the second time in 3 years. Oil level is good, no knock or odd sounds from the motor, drives fine. What would cause it to go? I run full synthetic. I’m assuming the screen is sludged up maybe, but trying to figure out if it’s just a bad part or is something else causing the issue?

[Sean]

Run it without the screen. If the screen gets clogged or the sensor goes bad again, you’re doing the job anyways.

[Josh]

Mine goes every couple years on my 07 tahoe. I use ac Delco, but it’s pretty easy to replace. Just climb up in there and reach all the way back, and you can get it without taking anything off. I would recommend putting some tape on the socket so you don’t drop it because it’s been 4 yrs, and I’ve still not found that last socket.

[Charles]

Definitely needs to be replaced with an AC Delco part. The aftermarket ones aren’t any good.

[John]

Did you replace the tiny screen down in the sending unit hole?

Could be a crusty connector /wire: GMs are known for instrument pannel issues.

Can alway hook up a manual gauge and monitor actual oil pressure.

[Mike]

It’s a thing on the Chevy’s. If it isn’t an OEM part, it can be dicey. Check the connector and make sure it’s clean and has good continuity as well.

[Author]

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