Oil Pressure

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Jan 19, 2026 | 10:38 AM

BlackBetty2002

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1st Gear

Joined: Jul 2024

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Oil Pressure

Hello,

I seem to remember my question being answered but can't find it. While giving my C5 a winter start up i see that oil pressure is pegged at 80lbs. Even after coming up to temp. Any Ideas?

Dan

Jan 19, 2026 | 10:55 AM

mmartinez

Melting Slicks

Joined: Sep 2008

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From: Espanola New Mexico

Oil pressure sensor has failed.

Jan 19, 2026 | 12:31 PM

Ltngdrvr

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Joined: Sep 2022

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Yup, likely a bad sensor.
You could use a manual gauge to test it, or just replace the sensor.

Jan 21, 2026 | 11:57 AM

vito02

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Joined: Jul 2023

Posts: 94

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From: SW CO

Quote:

Originally Posted by BlackBetty2002

Hello,

I seem to remember my question being answered but can't find it. While giving my C5 a winter start up i see that oil pressure is pegged at 80lbs. Even after coming up to temp. Any Ideas? Dan

If the pressure indication stays pegged high even at hot idle, I agree likely a failed sensor. But I would still check the pressure with a mechanical gauge. There are adapters that can be made or purchased that allow pressure testing at the oil filter.

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